EP0804463A1

EP0804463A1 - Neurokinine (tachykinine) antagonists

Info

Publication number: EP0804463A1
Application number: EP95919392A
Authority: EP
Inventors: Gerd Schnorrenberg; Franz Esser; Horst Dollinger; Birgit Jung; Georg Speck; Erich Buerger
Original assignee: Boehringer Ingelheim International GmbH; Boehringer Ingelheim GmbH
Current assignee: Boehringer Ingelheim International GmbH; Boehringer Ingelheim Pharma GmbH and Co KG
Priority date: 1994-05-07
Filing date: 1995-05-04
Publication date: 1997-11-05
Also published as: CN1147260A; EE9600186A; NO964700D0; SK142696A3; US5700827A; AU690275B2; RO115355B1; BG100946A; WO1995030687A1; CA2189764A1; IL113625A0; HRP950276A2; NZ285750A; NO964700L; FI964473A0; FI964473A; AU2524995A; US5712273A; MX9605128A; HU9603082D0

Abstract

The invention concerns new amino acid derivatives of general formula (I): R?1-R11-A1¿-B, and pharmaceutically acceptable salts thereof, wherein the group B represents -A?2- NR2R3 or R5, R1, A1, A2, R2, R3, R5 and R11¿ having the meanings indicated in the description. The invention also concerns the production and use of these compounds. The new compounds are valuable neurokinine (tachykinine) antagonists.

Description

NEUROKININ (TACHYKININ) - ANTAGONISTS

The invention relates to new amino acid derivatives of the general formula I.

R ¹ - R ¹¹ - A ¹ - B (I) where B is the group - A ² - NR ² R ³ or R ⁵

and their pharmaceutically acceptable salts, processes for their preparation and pharmaceutical compositions containing these compounds. The compounds are valuable neurokinin

(Tachykinin) antagonists.

European patent applications EP 394 989 and EP 443 132 and WO 94/05 693 describe peptides with neurokinin antagonistic activity. The compounds according to the invention differ from these peptides essentially in the terms R ¹ , A ² , R ⁵ and

The abbreviations used in this description and the claims for the amino acids correspond to the usual three-letter code as used, for example, in Europ. J. Biochem., 138, 9 (1984). The other abbreviations are explained below: Boc = t-butoxycarbonyl

Bzl = benzyl

CDI = carbonyldiimidazole

Cha = 3-cyclohexylalanine

DCCI = dicyclohexylcarbodiimide

DCH = dicyclohexylurea

HOBt = 1-hydroxybenztriazole

Hpa = homophenylalanine

Hyp = (2S, 4R) -hydroxyproline

Pal = 3- (1-pyrrolyl) alanine

THF = tetrahydrofuran

TFA = trifluoroacetic acid

Z = benzyloxycarbonyl

Me = methyl

Ac = acetyl

Et = ethyl

DMF = dimethylformamide

DPPA = diphenylphosphoryl azide

PPA = polyphosphoric acid

RT = room temperature

Mtr = 4-methoxy-2,3,6-trimethylbenzenesulfonyl

Trp (for) = formyl-protected triptophan

Met (0) = methionine, in which S is oxidized to the sulfoxide.

Bum = N (π) -tert. butoxymethyl

The expression amino acid encompasses (unless the following text expressly states otherwise)

natural and unnatural amino acids, both of the D and the L form, in particular α-amino acids,

and their isomers.

If an amino acid is given without a prefix (e.g.

Orn) this represents the L-form of the amino acid. The D shape is expressly stated. A simplified representation is used to represent the formulas. In the representation of compounds, all CH ₃ substituents are each represented by a dash, for example

In representations of groups (for example of R ¹ or A ² ), CH ₃ groups are written out in the group. Only the groups derived from camphoric acid and its derivatives are the CH ₃ groups bonded to the bridging carbon atom represented by dashes, for example the group (R ¹ )

The invention relates to new amino acid derivatives

general formula I.

R ¹ - R ¹¹ - A ¹ - B (I) and their pharmaceutically acceptable salts, wherein

R ^{1 is} a saturated or partially saturated 6-ring, which consists of 6 carbon atoms or 5 carbon atoms and one O or N atom each, which carries an oxygen function in the 2- or 3-position to R ¹¹ , which = 0, -OH or -O- (C ₁ -C ₄ alkyl), the ring additionally being a -CH ₂ -, -C (CH ₃ ) ₂ -, -C (C ₂ H ₅ ) ₂ - or -CH ₂ -CH ₂ bridge, or in addition to this bridge may contain a bond between two non-adjacent carbon atoms, and the ring thus bridged or bridged additionally substituted by 1 to 5 (C ₁ -C ₃ ) alkyl groups can be;

R ^{11 represents} -C (O) -, -CH ₂ -C (O) -, -SO ₂ - or -CH ₂ -SO ₂ -;

A ¹ D- or L-alanine (Ala), (D- or L-valine

(Val), D- or L-leucine (Leu), D- or

L-isoLeucine (Ile), D- or L-serine (Ser), D- or L-threonine (Thr), D- or L-alloThreonine, D- or L-cysteine (Cys), D- or L-methionine

(Met), D- or L-phenylalanine (Phe), D- or L-tryptophan (Trp), N-formyl protected Trp, D- or L-tyrosine (Tyr), D- or L-proline (Pro), D- or L-didehydroproline (ΔPro) like

for example 3,4-didehydroproline

(Δ (3,4) -Pro), D- or L-hydroxyproline

(Pro (OH)) such as 3-hydroxyproline (Pro (30H)) and 4-hydroxyproline (Pro (40H)), D- or L-azetidine-2-carboxylic acid (Azt), D- or L-thioproline (Tpr ), D- or L-aminoproline (Pro (NH ₂ )) such as 3-aminoproline (Pro (3NH ₂ )) and 4-aminoproline

(Pro (4NH ₂ )), D- or L-pyroglutamic acid (pGlu), D- or L-2-aminoisobutyric acid (Aib), D- or L-2, 3-diaminopropionic acid, D- or L-2, 4- Diaminobutyric acid, D- or

L-glutamic acid (Glu), D- or

L-aspartic acid (Asp), D- or L-glutamine (Gln), D- or L-asparagine (Asn), D- or L-lysine (Lys), D- or L-arginine (Arg), D- or L-histidine (His), D- or L-ornithine (Orn), D- or L-hydroxypiperidine carboxylic acid such as 5-hydroxypiperidine-2-carboxylic acid, D- or L-mercaptoproline

(Pro (SH)) such as 3-mercaptoproline (Pro (3SH)) and 4-mercaptoproline (Pro (4SH)), Tpr (O), Met (O), Tpr (O ₂ ) or Met (O ₂ ), means and their geometric isomers, the hydroxyl and amino groups present can be protected by customary protective groups (for example acyl, carbamoyl or aralkyl (in particular benzyl);

B is the group - A ² - NR ² R ³ - or -R ⁵ ; is a lipophilic α-amino acid which is a phenyl, 1, 2 or 3 times substituted phenyl, heteroaryl, cyclohexyl or

Cyclopentyl group, a naphthyl group or a mono- or di-C _1-3 alkylamino group, and this ring group or

Amino group is separated from the backbone of the amino acid by a 1- to 8-membered chain (the substituents of the

Phenyl group are independently halogen, trihalomethyl, alkoxy, alkyl, cyano or 1-pyrrolidinyl and in the 1- to 8-membered chain the links of the chain -CHR ⁴ , -C (O) -, -O-, -S- and / or -NR ⁴ -, which are arranged so that one of the following 3 types of chain results

- (CHR ⁴ ) _1-8 -

- (CHR ⁴ ) _0-p -G ¹ - (CHR ⁴ ) _0-q - - (CHR ⁴ ) _1-p -G ² - (CHR ⁴ ) _0-q - where G ¹ -C (O) O- or -C (O) -NR ⁴ -,

G ² -O-, -S-, -NR ⁴ -C (O) -O-, -NR ⁴ -C (O) -,

-NR ⁴ -C (O) -NR ⁴ - or -OC (O) -NR ⁴ -

and p and q are integers from 1 to 6, chosen so that the total number of

Chain links is 1 to 8, and R ^{4 represents} hydrogen, alkyl, aryl or aralkyl, wherein

Aryl for phenyl, 1, 2 or 3 times

substituted phenyl or naphthyl; the substituents of the phenyl group are independently halogen, trihalomethyl, alkoxy, alkyl or cyano; and the

Alkyl group contains 1 to 3 carbon atoms; (where, if a chain contains more than one -CHR ⁴ group, only in one of these -CHR ⁴ groups R ^{4 can be} alkyl, aryl or aralkyl) or

A ² Leu, Ile, Nle, Val, Met or one of the groups

(where x and y are independently 1 or

2 are);

R ² and R ^{3 are} independently alkyl,

Arylalkyl, heteroaryl or hydroxy (where aryl is phenyl, 1, 2 or 3 times substituted phenyl or naphthyl; the substituents of the phenyl group independently of one another are halogen, trihalomethyl, alkoxy, alkyl, alkylthio, hydroxy, nitro, trifluoromethoxy, dialkylamino or

Are cyano or 2 adjacent positions of the phenyl group are connected by -O- (CH ₂ ) ₁ or 2-O-; Heteroaryl represents indolyl, pyridyl, pyrrolyl, imidazolyl or thienyl; and the alkyl or alkoxy group 1 to

Contains 3 carbon atoms) or the group

a ring of the general formula

mean in which m and n are each 0, 1, 2 or 3, the sum of which is 2, 3, 4 or 5, s is 2 or 3,

W the group

(CH ₂ ) _0-2 aryl, CH (aryl) ₂ , cyclopentyl,

(CH ₂ ) _0-2 cyclohexyl, pyridyl or

(where aryl is phenyl, 1, 2 or 3 times substituted phenyl or naphthyl;

the substituents of the phenyl group independently of one another halogen, trihalomethyl,

Alkoxy, alkyl, cyano, hydroxy, nitro, -CO ₂ CH ₃ , -CO ₂ C ₂ H ₅ or alkylthio or 2 adjacent positions of the phenyl group through

-O- (CH ₂ ) _1-2 -O- are connected and

Alkyl contains 1 to 3 carbon atoms);

R ⁵ for an amine of the formula

stands in what R ^{6 is} aralkyl, diarylalkyl (in these groups aryl is phenyl or naphthyl and alkyl

(C ₁ -C ₅ ) alkyl)) heteroaryl- (C ₁ -C ₅ ) alkyl

(wherein heteroaryl 2-, 3- or 4-pyridyl or

Is 2- or 3-thienyl),

Phenylamino (C ₁ -C ₅ ) alkyl,

Naphthylamino (C ₁ -C ₅ ) alkyl or

N-phenylalkylpiperidinyl (in which the phenyl groups mentioned are unsubstituted or contain 1, 2 or 3 substituents which independently of one another are (C ₁ -C ₅ ) -alkyl, preferably methyl,

(C ₁ -C ₅ ) alkoxy, preferably methoxy,

Are dimethylamine, halogen, trifluoromethyl, -CN or OCF ₃ );

R7 represents hydrogen or (C ₁ -C ₅ ) alkyl;

X represents 0 or H ₂ ;

Y and Z are independently hydrogen

(C ₁ -C ₅ ) alkyl, (C ₁ -C ₅ ) alkyloxy, benzyloxy

(in which the phenyl group is unsubstituted or 1,

Contains 2 or 3 substituents independently

(C ₁ -C ₅ ) alkyl, preferably methyl,

(C ₁ -C ₅ ) alkoxy, preferably methoxy,

Dimethylamine, halogen, trifluoromethyl, -CN or

OCF ₃ ), OCF ₃ , halogen, CF ₃ , CN,

CH ₂ NH ₂ , CONH ₂ , N- (C ₁ -C ₅ alkyl) ₂ ,

NH- (C ₁ -C ₄ ) alkylcarbonyl,

N- (C ₁ -C ₅ ) alkyl-N- (C ₁ -C ₄ ) alkylcarbonyl,

NH ₂ or NH- (C ₁ -C ₅ ) alkyl or, if Y and Z are vicinal to one another, these together

-OCH ₂ O-, OCH ₂ CH ₂ O- or (CH) ₄ ; t and u have one of the following meanings

(a) t and u zero

(b) t one and u zero

(c) t and u one each

(d) t two and u zero;

and if t is one and u is zero, R ⁵ also for an amine of formula IV

stands in what

R ⁶ , R ⁷ , Y and Z have the meaning given above and

R ^{8 represents} hydrogen and R ^{9 represents} hydroxy, (C ₁ -C ₅ ) alkoxy, phenyl- (C ₁ -C ₅ ) alkyloxy,

Naphthyl- (C ₁ -C ₅ ) alkyloxy or

(C ₁ -C ₄ ) alkylcarbonyl, or wherein

R ⁸ and R ⁹ together for oxygen or

-OCH ₂ CH ₂ O-; and the chirality at C * R or S can mean The compounds of the invention are valuable

Neurokinin (tachykinin) antagonists that both

Substance P antagonism, as well as neurokinin A or

Have neurokinin B antagonistic properties.

They are useful for the treatment and prevention of neurokinin-mediated diseases.

Compounds of the general formula I can

Have acid groups, mainly carboxyl groups, or phenolic hydroxyl groups, and / or basic

Groups such as Guanidino or amino functions.

Compounds of the general formula I can therefore be used either as internal salts, as salts with pharmaceutically usable inorganic acids such as hydrochloric acid,

Sulfuric acid, phosphoric acid, sulfonic acid or

organic acids (such as maleic acid,

Fumaric acid, citric acid, tartaric acid or acetic acid) or as salts with pharmaceutically usable bases such as alkali or alkaline earth metal hydroxides or

Carbonates, zinc or ammonium hydroxides or

organic amines such as Diethylamine, triethylamine, triethanolamine and others available.

The chirality centers in the new amino acid derivatives can each have the R, S or R, S configuration.

The expression "partially saturated 6-ring" used in the definition of R ¹ is understood to mean a 6-ring which has two double bonds or preferably one

Contains double bond.

The bridged or unbridged ring described in the definition of R ¹ can have 1 to 5 (C ₁ -C ₃ ) alkyl groups

(preferably methyl groups) included. It should be noted that these alkyl groups each replace one or two H atoms of the CH ₂ groups forming the ring and in two adjacent CH ₂ groups, a maximum of 3 H atoms are replaced by alkyl groups. It follows from this that the group R ¹ contained in compound 1, for example, does not exceed 5

Alkyl groups in the ring (in addition to the two

Contains methyl groups of the bridge) and the group R ¹ contained in compound 22 contains a maximum of 4 alkyl groups.

Said bridge preferably connects positions 1 and 4, 2 and 5 or in particular 3 and 6, based on position 1 of the ring, which is connected to R ¹¹ .

The bridge preferably connects 2 carbon atoms of the ring. If R ^{1 is} a heterocyclic ring containing N, R ^{1 is} preferably connected to R ¹¹ via a C atom.

The expression contained in the definition of A ²

"Heteroaryl group" stands for a mono-, bi- or

tricyclic aromatic ring system, the 1 or 2

Contains heteroatoms, namely one or two

Nitrogen atoms or a nitrogen atom and a

Sulfur atom. If desired, the group may contain 1 or 2 substituents (C _1-3 alkyl) or an oxo group or an alkoxy group.

Examples of suitable heteroaryl groups are

γ = H ₂ or 0

It should be noted that the above

Heteroaryl groups can also be attached to the chain in positions other than those specified.

The "1 to 8-link chain" contained in A ² consists, as explained above, of one to 8 links, which are understood to mean the following groups: -CHR ⁴ -, -C (O) -, -O-, -S -, -NR ⁴ -. The chain is attached to the α-carbon atom of the amino acid (A ² ).

R ⁴ (as stated above) represents hydrogen, alkyl, aryl or aralkyl, R ⁴ is preferably

Hydrogen, methyl or phenyl.

Examples of suitable chains are

- (CH ₂ ) _1-4 -

-CH ₂ -O-CH ₂ -, -CH ₂ -O-

-CH ₂ -S-CH ₂ -, -CH ₂ -S-

-CH (CH ₃ ) -O-CH ₂ -, -CH (CH ₃ ) -O-

- (CH ₂ ) ₁ _ ₂ -C (O) -O-CH ₂ -, -C (O) -NH-

- (CH ₂ ) ₄ -NH-C (O) -O-CH ₂ -

-CH ₂ -C (O) -NH-

-CH ₂ -C (O) -NH-CH ₂ -

-CH ₂ -C (O) -N (CH ₃ ) -CH ₂ -

-CH ₂ -C (O) -O- -CH ₂ -NH-C (O) -CH ₂ -

-CH ₂ -NH-C (O) -O-

-CH ₂ -NH-C (O) -O-CH ₂ -

-CH ₂ -NH-C (O) -NH-

- (CH ₂ ) ₂ -C (O) -NH- (CH ₂ ) ₂ -

- (CH ₂ ) ₄ -NH-C (O) -CH ₂ -

- (CH ₂ ) ₃ -NH-C (O) -O-CH ₂ -

The chain preferably contains 1 to 5, in particular 1 to 4, links.

Of the compounds of the formula I according to the invention, preference is given to those in which

R ¹ and R ^{11 are} as defined above,

A ¹ D- or L-alanine (Ala), (D- or L-valine

(Val), D- or L-leucine (Leu), D- or

L-isoLeucine (Ile), D- or L-Serine (Ser), D- or L-Threonine (Thr), D- or

L-alloThreonine, D- or L-cysteine (Cys), D- or L-methionine (Met), D- or

L-phenylalanine (Phe), D- or L-tryptophan (Trp), N-formyl protected Trp, D- or L-tyrosine (Tyr), D- or L-proline (Pro), D- or L-didehydroproline ( ΔPro) like

for example 3,4-didehydroproline (Δ (3,4) -Pro), D- or L-hydroxyproline

(Pro (4NH ₂ )), D- or L-pyroglutamic acid (pGlu), D- or L-2-aminoisobutyric acid

(Aib), D- or L-2, 3-diaminopropionic acid, D- or L-2, 4-diaminobutyric acid, D- or

L-glutamic acid (Glu), D- or

L-Aspartic Acid (Asp), D- or L-Glutamine

(Gin), D- or L-Asparagine (Asn), D- or

L-lysine (Lys), D- or L-arginine (Arg), D- or L-histidine (His), D- or L-ornithine

(Orn), D- or L-hydroxypiperidine carboxylic acid such as 5-hydroxypiperidine-2-carboxylic acid, D- or L-mercaptoproline

(Pro (SH)) such as 3-mercaptoproline

(Pro (3SH)) and 4-mercaptoproline (Pro (4SH)),

Tpr (O), Met (O), Tpr (O ₂ ) or Met (O ₂ ),

means and their geometric isomers,

with contained hydroxy and amino groups

through usual protective groups (e.g. acyl,

Carbamoyl or aralkyl (especially benzyl) can be protected; and when B is the group - A ² - NR ² R ³

A ^{2 is} a lipophilic amino acid, which is a

Phenyl, 1, 2 or 3 times substituted

Phenyl, heteroaryl, cyclohexyl or

Cyclopentyl group or a mono- or

Di-C _1-3 alkylamino group contains, and this

Ring group or amino group by a 1- bis

8-link chain is separated from the backbone of the amino acid (where the substituents of the

Phenyl group independently of one another halogen,

Trihalomethyl, alkoxy, alkyl, cyano or

Are 1-pyrrolidinyl and the chain is as defined in claim 1) or A ² Leu, Ile, Nle, Val, Met or one of the groups

(wherein x and y are independently 1 or 2); and R ^{3 is} independently alkyl,

Arylalkyl, heteroaryl or hydroxy (in which aryl is phenyl, 1, 2 or 3 times substituted phenyl or naphthyl; the substituents of the phenyl group are independently halogen, trihalomethyl, alkoxy, alkyl or cyano; heteroaryl is indolyl, pyridyl, pyrrolyl, Imidazolyl or thienyl; and the alkyl or

Alkoxy group contains 1 to 3 carbon atoms) or the group

a ring of the general formula

mean wherein m, n and s are as defined in claim 1, and

W the group

- (CH ₂ ) _0-2 aryl, CH (aryl) ₂ , cyclopentyl or (CH ₂ ) _0-2 cyclohexyl

(where aryl is phenyl, 1, 2 or 3 times substituted phenyl or naphthyl; the substituents of the phenyl group are independently halogen, trihalomethyl, alkoxy, alkyl or cyano).

Of the compounds of formula la according to the invention

R ¹ - R ¹¹ - A ¹ - A ² - NR ² R ³ la are preferred in which

R ¹ and R ^{11 are} as defined above and / or

A ^{1 is} an amino acid that is one or 2 polar

functional group (s) in the side chain carries, such as OH, COOH, NH ₂ , guanidine, CONH ₂ , SH; especially what the functional group in the side chain of A ^{1 is} OH and / or in which A ^{1 is} pro, 4-hydroxyproline,

Is 3-hydroxyproline, Ser, Thr, Trp (For) or Tyr;

is preferably 4-hydroxyproline with a 2-S configuration, in particular

and / or wherein A ^{2 is} an acyclic or cyclic amino acid such as (O-benzyl) Ser, (O-subst. Benzyl) Ser, (O-Benzyl) Thr, cyclohexylalanine, homophenylalanine, 3- (1-pyrrolyl) alanine,

3- (2,5-dimethyl-1-pyrrolyl) alanine, 3- (1-indolyl) alanine, 2-amino-4- (1-pyrrolyl) butyric acid,

2-amino-5- (1-pyrrolyl) valeric acid,

2-amino-6- (1-pyrrolyl) caproic acid, Leu, Lys (Z),

3- (2-thienyl) alanine, 3- (3-benzothienyl) alanine,

3- (1-isoindolinonyl) alanine, (O-benzyl) Asp,

(O-benzyl) Glu, Trp, (N-Me) Trp, His,

3- (2-thiazolyl) alanine, or 3-dimethylamino alanine, - (O-methyl) tyr, 2-naphthylalanine,

is being those contained in the amino acids

Phenyl groups can be substituted 1, 2 or 3 times and the substituents independently of one another halogen, trihalomethyl, alkoxy, alkyl or

Are cyano, the alkyl or alkoxy group contains 1 to 3 carbon atoms; and wherein the amino acids given are preferably in the S configuration; Particularly noteworthy are compounds in which

is; and / or wherein R ² and R ^{3 are} independent of one another

Methyl, benzyl, phenethyl (the phenyl groups contained therein by one or two methyl or

Methoxy groups are substituted) or pyridylmethyl; preferably compound wherein R ^{2 is} methyl and R ^{3 is} benzyl or alkoxybenzyl, especially where R ^{3 is} 2-methylbenzyl; or where the group

a ring

means where m is 1 and n is 1 or 2; or where the group a ring

means where s is 2 or 3 (preferably 2) and W is as defined above; preferably wherein W

Is cyclohexyl, phenyl, CH (phenyl) ₂ , naphthyl or pyridyl in which the phenyl groups are substituted; where if W is phenyl, this is preferably monosubstituted by -CO ₂ CH ₃ ,

-CO ₂ C ₂ H ₅ halogen, alkoxy, alkyl,

Cyano, hydroxy, nitro,

or alkylthio, in particular

by methoxy, chlorine, methyl, ethyl, cyano, hydroxy, nitro or methylthio, preferably by methoxy, chlorine, methyl, cyano or

Methylthio, the substituent of

Phenyl group is preferably in position 2 and when W is the group -CH (phenyl) ₂ , the

Phenyl groups are each substituted by a halogen, preferably by fluorine, the two phenyl groups in the -CH (phenyl) ₂ group preferably being substituted identically, preferably in the p-position.

Of the compounds of the formula Ib _R 1 _ _R 11 _ _A 1 _ _R 5 _{Ib of} the invention, those are preferred in which R ¹ and R ^{11 are} as defined above and / or

A ^{1 is} an amino acid that is one or 2 polar

functional group (s) in the side chain carries, such as OH, COOH, NH ₂ , guanidine, CONH ₂ , SH; in particular in which the functional group in the side chain of A ^{1 is} OH and / or in which A ^{1 is} pro, 4-hydroxyproline,

Is 3-hydroxyproline, Ser, Thr, Trp (For) or Tyr;

is preferably 4-hydroxyproline with a 2-S configuration, in particular

Preferred compounds of the invention are those in which R ^{5 is} a group of the general

Formula II

is, in particular those in which t one and u are zero or t two and u are zero or t and u are each one, and R ⁶ ,

R ⁷ , X, Y and Z are as defined above.

Particular mention should be made of those compounds in which R ⁶

Is benzyl or methoxybenzyl and / or wherein R ⁷

Is hydrogen and / or wherein X is oxo and / or wherein

Y and Z independently of one another methoxy, hydrogen,

CF ₃ or tert. Butyl or together - mean (CH) ₄ .

Of the compounds written above, those are preferred in which

R ¹

preferably and R ^{11 is} -CH ₂ SO ₂ or preferably -C (O) -.

The amino acids given are preferably in

S configuration before. Test results for the invention

Links:

The receptor affinity for the NK ₁ receptor (substance

P receptor) was found on human lymphoblastoma cells

(IM-9) with cloned NK ₁ receptors, the displacement of ¹²⁵ I-labeled substance P

is measured. The NK ₂ binding test is carried out on transfected A20 cells which express the human NK ₂ receptor. The displacement of ¹²⁵ _J -BN-Neosolinin A is determined. The IC ₅₀ values thus obtained are:

Compilation of connections:

Those shown in links 56 and 57

Compounds contain (again in a simplified representation) the groups R ¹ as in Examples 55 and 24.

Of these compounds, compounds 1 to 5, 8 and 15 to 18 and 43 are preferred.

The type in which the CH ₃ groups are not written out was used in the representation of the above formulas. Compound 1, for example, contains as group R ¹ -R ¹¹ - the (+) - camphorocarboxylic acid group.

The compounds of the invention are valuable neurokinin (tachykinin) antagonists that both

Substance P antagonism, as well as neurokinin A or neurokinin B antagonistic properties. They are useful for the treatment and prevention of neurokinin-mediated diseases:

Treatment or prevention of inflammatory and allergic diseases of the respiratory tract, such as asthma, chronic bronchitis, emphysema, rhinitis, cough, eyes, such as conjunctivitis and iritis,

the skin, such as dermatitis, urticaria, psoriasis, the gastrointestinal tract, such as ulcerative colitis, Crohn's disease, irritable colon, M. Hirschsprung of the joints, such as rheumatoid arthritis, reactive

Arthritis and Reiter's syndrome.

For the treatment of diseases of the central nervous system, such as dementia, Alzheimer's disease, schizophrenia, psychoses,

Depression, headache (e.g. migraine), epilepsy.

Treatment of tumors, collagenosis, urinary tract dysfunction, hamorrhoids, vomiting and pain of all kinds.

Of particular medical interest are compounds whose NK ₁ and NK ₂ values are of a similar order of magnitude.

The invention therefore also relates to the use of the compounds according to the invention as medicines and

pharmaceutical preparations containing these compounds. Use in humans is preferred. The compounds according to the invention can be administered intravenously, subcutaneously, intramuscularly, intraperitoneally, intranasally, by inhalation, transdermally, if desired by iontophoresis or enhancers known from the literature

promoted, and orally.

For parenteral administration, the compounds of the formula I or their physiologically acceptable ones

Salts, possibly with the usual substances such as solubilizers, emulsifiers or other auxiliaries brought into solution, suspension or emulsion. As

Solvents come e.g. in question: water,

physiological saline solutions or alcohols, e.g.

Ethanol, propanediol or glycerin, sugar solutions such as glucose or mannitol solutions or a mixture of different solvents. In addition, the connections can be made through implants, for example from polylactide, polyglycolide or

Polyhydroxybutyric acid or intranasal preparations can be applied.

The compounds of the invention can

generally known methods of amino and

Peptide chemistry can be made by gradually adding the respective amino acids, respectively

Peptide derivative part sequences, carboxylic or sulfonic acids and amines condensed and the compound thus obtained isolated in free form or in the form of the desired salt.

The dipeptide derivatives of the formula la according to the invention

R ¹ - R ¹¹ - A ¹ - A ² - NR ² R ³ la can be built up from the parts R ¹ -R ¹¹ OH, HA ¹ -OH, HA ² -OH and HN (R ³ ) R ² , the Sequence of couplings from right to left, from left to right or by coupling the units

R ¹ -R ¹¹ -A ¹ -OH and HA ² -N (R ³ ) R ²

(Fragment couplings) can take place.

The compounds of the invention can

well-known methods of peptide chemistry, e.g. in "Houben-Weyl, Methods of Organic Chemistry, Vol. 15/2", or after solid-phase peptide synthesis (for example RC Sheppard, Int. J. Pept. Prot. Res., 21, 1181 [1983]) or equivalent known methods are produced. The respective

Amino acids or partial amino acid sequences step by step condensed and the peptides thus obtained are in free form or in the form of the desired salts

isolated. As amino protecting groups, the in

"Houben-Weyl, Methods of Organic Chemistry, Vol.

15/1 "used, the benzyloxycarbonyl group (Z) and in conventional syntheses

Solid phase syntheses the fluorenylmethoxycarbonyl group (Fmoc) is preferred. The side chain of arginine is protected by protonation in the case of conventional synthesis, in the case of

Solid phase synthesis, the Mtr group was used. In solid phase peptide synthesis e.g. the following side-chain protected amino acids are also used:

Lys (Boc), His (Bum), Ser (tBu) and Asp (tBu). The

Special synthesis conditions can be found in the following examples.

For the synthesis of the compounds of general formula I after the solid phase synthesis, the

Synthesized dipeptide carboxylic acids, which are converted to the dipeptide amides in solution. The following are suitable as anchor groups

1. Benzyl ester (G. Barang, R.B. Merrifield, Peptides

2, 1 (1980) Eds. E. Gross, J. Meienhofer, Academic Press, New York)

2. PAM anchor (R.B. Merrifield, J. Am. Chem. Soc. 85, 2149 (1966))

3. Wang anchor (S.-S. Wang, J. Am. Chem. Soc. 95, 1328 (1973))

4. SASRIN anchor (M. Mergler, R. Tanner, J. Gostuli, P.

Grogg, Tetrah. Lett. 29: 4005 (1988)). For the preparation of the compounds of formula Ib

R ¹ - R ¹¹ - A ¹ - R ⁵ Ib become the components R ¹ -R ¹¹ OH, the amino acid

HA ¹ -OH and the amine HR ⁵ linked together. The acid R ¹ -R ¹¹ OH can optionally be used first

a suitably protected form of HA ¹ -OH can be coupled and condensed with the amine HR ⁵ after deprotection, or the suitably protected amino acid HA ¹ -OH can first be reacted with HR ⁵ and, after deprotection of this product, coupled with R ¹ -R ¹¹ OH become.

The base bodies of the amines HR ⁵ according to the invention can be obtained by processes known per se:

In the event that HR ⁵

with t = 1 and u = 0 and R ⁶ , Y and Z as above

are defined, the preparation takes place according to known methods as described by AL Davis et al., J. Med. Chem. 18, 752 (1975) or H. Merz, DE 38 23 576 (CA. 114 (21), 207 052 m) described. The radical R ^{6 is introduced} into a compound of the general formula XI by reaction with NaH and BrR ⁶ . This reaction can be carried out with or without the use of a protective group (Seh) on the exoeyclic N.

This production can be summarized by the following reaction scheme: Suitable protective groups (eyes) are base stable

Protecting groups such as the Boc group.

To prepare a compound of general formula XI, a compound of general formula X is reduced with ring closure (e.g. analogously to that of A.L.

Davis et al. (J. Med. Chem. 9, 826 (1966)) described using Pd-Mohr).

The connection X can be made accordingly

Substituted 1-nitrobenzyl alcohol (VII) via intermediates VIII and IX (by halogenation with, for example, SOCl ₂ and subsequent reaction with

Diethyl acetamidomalonate according to J. Med. Chem. 9, 828 (1966)) can be prepared.

An amine HR ^{5 of} the general formula IIb

where t = 1 and u = 0 and R ⁶ , Y and Z are as defined above for formula Ila, can be prepared by reducing a corresponding compound Ila using, for example, LiA1H ₄ .

For the preparation of a compound Ila, in which t = u = 0 and R ⁶ , Y and Z are as defined above, the method according to AL Davis et al., J. Med. Chem. 16, 1043 (1973) is suitable. Starting from methyl α-bromo-o-nitrophenylacetate

Phthalimide group introduced and after cleavage of the protective groups and reduction of the nitro group cyclized to (substituted or unsubstituted) 3-amino-2-indolinone:

The introduction of R ⁶ and reduction to the analogue compound of the general formula IIb can be carried out as indicated above.

The preparation of the compound Ila with t = 2, u = 0, in which R ⁶ , Y and Z are as defined above, can be carried out in

the following reaction scheme can be summarized:

The introduction of R ⁶ u. Reduction to the analog

Connection IIb can take place as indicated above.

This can be done accordingly in this production

substituted 2- (2-nitrophenyl) ethyl bromide (XVIII) analogous to the methods described above

Acetamidomalonsäurediethylester be converted to compound XIX and then to XX.

The reduction of compound XX to compound XXI can e.g. by hydrogen in the presence of Pd-Mohr in a solution of MeOH and water under pressure. The ring closure for the preparation of compound XXII can be carried out with polyphosphoric acid with stirring and heating.

The preparation of the compound Ila with t = u = 1, in which R ⁶ , Y and Z are as defined above, can be carried out

the following way: Unsubstituted or

Substituted phthaloyl-phenylalanine is coupled with the amine H ₂ NR ⁶ and then cyclized in a kind of Pictet-Spengler reaction with formaldehyde. Finally, the phthaloyl group is split off, for example by treatment with hydroxylamine:

The reduction to the analogue compound of the general formula IIb can be carried out as indicated above.

The preparation of an amine HR of the general formula IIIa,

wherein R ⁶ , Y and Z are as defined above can be according to G-Leclerc et al., J. Med. Chem. 29, 2427 (1986). For this purpose, substituted or unsubstituted 3-bromoquinoline is first converted into the corresponding N-oxide, then rearranged to quinolin-2-one and finally the amino group is introduced with ammonia under pressure (in the bomb tube):

The substituent R ⁶ can be introduced as described above for the compound Ila.

The preparation of a compound HR ^{5 of} the general formula IVa,

wherein R ^{6 is} as defined above and R ^{8 is} hydroxy and

R ^{9 is} hydrogen, according to R. Wei.chert, Arkiv Kemi.

25, 231 (1966). Doing so

Acetaminomalonic acid monoethyl ester reacted with substituted or unsubstituted 2-nitrobenzaldehyde, then hydrolyzed, the nitro group reduced and finally cyclized:

R is introduced as described above. For the preparation of a compound IVa, wherein

R ⁹ (C ₁ -C ₅ ) alkoxy, phenyl- (C ₁ -C ₅ ) alkyloxy,

Naphthyl- (C ₁ -C ₅ ) alkyloxy or

Is (C ₁ -C ₄ ) alkylcarbonyl or wherein R ⁸ and R ⁹

together represent oxygen or -OCH ₂ CH ₂ O-,

can the above-mentioned compound IVa, wherein R ⁸

Hydrogen and R ⁶ hydroxy is reacted as follows: a) for the preparation of a compound IVa, in which R ^{9 is} alkyloxy, phenyl- or naphthylalkyloxy:

Etherification according to Williamson; b) for the preparation of a compound IVa, in which R ^{9 is} alkylcarbonyl: reaction with the corresponding acid anhydride; c) for the preparation of a compound IVa, in which R ⁸ and R ⁹ together represent oxygen: oxidation according to, for example, Oppenauer; d) for the preparation of the compound IVa, in which R ⁸

and R ⁹ together are -OCH ₂ CH ₂ O-: implement the

obtained after (c) keto compound with ethylene glycol.

For the preparation of the amine of the general formula HR ⁵ , wherein R ^{7 is} alkyl, the compounds of the general formulas Ila, Ilb, lila and IVa

alkylated. This alkylation can be carried out by first protecting the exocyclic N with, for example, trifluoroacetyl, carrying out the alkylation with, for example, alkyl bromide and then removing the protective group by, for example, hydrolysis. Pharmaceutical preparations:

Solution for injection

Lyophilisate

Example 1 tert-Butyloxycarbonyl- (2S) -2-naphthylalanyl- (2-methoxyphenyl) piperazide (I)

3.15 g of tert-butyloxycarbonyl-L-2-naphthylalanine and

1.8 g of N, N'-carbonyldiimidazole were stirred in 100 ml of THF for 2.5 hours. 1.93 g of 1- (2-methoxyphenyl) piperazine were added, at 12 hours

Stirred at room temperature and then THF in vacuo

distilled off. After taking up in 100 ml of ethyl acetate, the mixture was extracted with 10% KHCO ₃ solution and water, the ethyl acetate phase was dried over Na ₂ SO ₄ and in

Vacuum concentrated.

4.9 g colorless oil tert-butyloxycarbonyl- (2S, 4R) -4-hydroxyprolyl- (2S) -2-naphthylalanyl- (2-methoxyphenyl) piperazide (II)

4.9 g of I were stirred in 50 ml of trifluoroacetic acid / dichloromethane (1: 1) 45 'at room temperature, the solution was evaporated in vacuo, the residue was dissolved in ethyl acetate and twice each with 10% KHCO ₃ solution and

Extracted water, dried the ethyl acetate phase and evaporated. The oily residue was dissolved in 50 ml

DMF / dichloromethane (1: 1) dissolved and mixed with 2.3 g of tert-butyloxycarbonyl (2S, 4R) -4-hydroxyproline, 1.6 g of 1-hydroxybenzotriazole, with 3 ml

Diisopropylethylamine was adjusted to pH 9.5 and then 3.8 g of tetramethyluronium tetrafluoroborate were added and the mixture was stirred for 24 hours. The solution was evaporated in a high vacuum, the residue was taken up in ethyl acetate and extracted twice with 10% KHCO ₃ solution and saturated NaCl solution, dried and evaporated.

5.4 g of yellow oil (90% of theory). (+) - Camphor-3-carbonyl- (2S, 4R) -4-hydroxyprolyl (2S) -2-naphthylalanyl- (2-methoxyphenyl) piperazide

0.6 g II were mixed with 20 ml

Trifluoroacetic acid / dichloromethane (1: 1) 45 '

Stirred at room temperature, evaporated and taken up in ethyl acetate, extracted with 10% KHCO ₃ solution and water, dried and evaporated. The residue was taken up in 40 ml of DMF / dichloromethane (1: 1), with 0.2 g (+) - camphor-3-carboxylic acid, 0.16 g of 1-hydroxybenzotriazole, 1 ml of diisopropylethylamine and 0.38 g

Added tetramethyluronium tetrafluoroborate and 12

Stirred for hours at room temperature. After concentration, the mixture is taken up in ethyl acetate, extracted twice with 10% KHCO ₃ solution and water, dried and

evaporated. The hydrochloride is precipitated with ethereal HCl.

310 mg (45% of theory).

Production of 2a:

7.0 g of Boc-L-tryptophan (23 mmol) and 3.1 g of N-methyl- (o-methylbenzyl) amine (23 mM) were dissolved in 200 ml of DMF, 7.75 g of TBTU (24 mM) were added and some were added Drops of triethylamine adjusted to approximately pH 8. After 24 hours at room temperature, the mixture was evaporated to dryness in vacuo, the residue was taken up in 300 ml of ethyl acetate, extracted 3 times with 150 ml of 0.5N HCl and 3 times with 150 ml each

NaHCO ₃ solution extracted. The ethyl acetate phase was dried with MgSO ₄ , filtered and evaporated to dryness, giving 7.4 g of 2a as an ivory-colored solid. Mp .: 70-84 ° C.

[α] ²⁰ _D = + 34.3 ° (MeOH)

Production of 2b:

6.8 g of 2a (16 mM) were mixed with 200 ml of 4N HCl in dioxane and stirred at room temperature for 1 hour. The reaction solution was evaporated to dryness

The residue is stirred with ether, suction filtered, washed with ether and dried in a desiccator. 6.47 g of the hydrochloride 2b were obtained as a pink powder.

Production of 2c:

4.5 g of 2b (12.6 mM) and 2.91 g of Boc- (2S, 4R) -hydroxyproline were dissolved in 120 ml of DMF, 4.3 g of TBTU (13.4 mM) were added, and TEA was added the pH was adjusted to approximately 8. After stirring for 24 hours

Room temperature was evaporated to dryness, taken up in 400 ml of ethyl acetate, extracted 3 × with 200 ml of 0.5 N HCl and 3 × with 200 ml of 1 N NaHCO ₃ solution and the organic phase was dried over MgSO ₄ , filtered and concentrated. There were 6.33 g of 2c as a beige

Preserve solid substance. Production of 2d:

The Boc protecting group was removed as described in the preparation of 2b. 4.7 g of the hydrochroride 2d were obtained as a beige powder.

Production of 2e:

1.2 g 2d (2.55 mM) and 0.5 g (+) camphoric acid

(2.55 mM) were combined with 30 ml CH ₂ Cl ₂ and 0.9 g TBTU (2.8 mM), adjusted to pH 8 by adding TEA and stirred for 24 hours at room temperature. The

The reaction mixture was evaporated to dryness and the

Residue on silica gel using CH ₂ Cl ₂ / MeOH = 9: 1 as

Eluens chromatographed. The uniform fractions were concentrated to give 0.49 g of 2e as a beige solid:

Mp .: 55-64 ° C.

[α] ²⁰ _D = -21.4 ° (MeOH).

Example 3 (Compound 34)

Connection 2d

TBTU (-) - camphoric acid

2d was synthesized as in Example 2. 0.63 g of 2d (1.34 mmol) and 0.26 g of (-) camphoric acid were dissolved in 25 ml of DMF, the pH was adjusted to 8 by adding 0.38 ml of TEA, and 0.48 g of TBTU admitted. The mixture was stirred at room temperature overnight and then evaporated to dryness on a Rotavapor. The

The residue was dissolved in ethyl acetate and chromatographed on silica gel using ethyl acetate as the mobile phase. The above compound was obtained as a white solid. Yield: 0.46 g.

M.p .: 125-144 ° C; [α] ²⁰ _D = -81.9 ° (MEOH).

The other compounds of this invention can be prepared analogously, for example compounds 1 to 53 given above.

Compilation of the physical data of the

Connections 1 to 56

Claims

Claims:

1. Amino acid derivative of the general formula I R1 _ _R 11 _ _A 1 _ _B (I) or its pharmaceutically acceptable salt, in which

R ^{1 is} a saturated or partially saturated 6-ring, which consists of 6 carbon atoms or 5 carbon atoms and each has a 0 or N atom, which in the 2- or 3-position to R ¹¹ carries an oxygen function which = 0, -OH or -O- (C ₁ -C ₄ alkyl), the ring additionally being a -CH ₂ -, -C (CH ₃ ) ₂ -, -C (C ₂ H ₅ ) ₂ - or -CH ₂ -CH ₂ bridge, or in addition to this bridge, a bond between two non-adjacent C atoms

may contain, and the thus bridged or bridged ring may additionally be substituted by 1 to 5 (C ₁ -C ₃ ) alkyl groups;

R ^{11 represents} -C (O) -, -CH ₂ -C (O) -, -SO ₂ - or -CH ₂ -SO ₂ -;

A ¹ D- or L-alanine (Ala), (D- or L-valine (Val),

D- or L-leucine (Leu), D- or L-isoLeucine (Ile), D- or L-serine (Ser), D- or L-threonine (Thr),

D- or L-allothreonine, D- or L-cysteine (Cys),

D- or L-methionine (Met), D- or

L-phenylalanine (Phe), D- or L-tryptophan (Trp), N-formyl protected Trp, D- or L-tyrosine (Tyr), D- or L-proline (Pro), D- or L-didehydroproline (ΔPro) like

for example 3, 4-didehydroproline

(Δ (3,4) -Pro), D- or L-hydroxyproline

(Pro (4NH ₂ )), D- or L-pyroglutamic acid (pGlu), D- or L-2-aminoisobutyric acid (Aib), D- or L-2,3-diaminopropionic acid, D- or L-2,4- Diaminobutyric acid, D- or

L-glutamic acid (Glu), D- or

L-aspartic acid (Asp), D- or L-glutamine (Gin), D- or L-asparagine (Asn), D- or L-lysine (Lys), D- or L-arginine (Arg), D- or L-histidine (His), D- or L-ornithine (Orn), D- or L-hydroxypiperidine carboxylic acid such as 5-hydroxypiperidine-2-carboxylic acid, D- or L-mercaptoproline

Phenyl group independently of one another are halogen, trihalomethyl, alkoxy, alkyl, cyano or 1-pyrrolidinyl, and in the 1- to 8-membered chain the members of the chain -CHR ⁴ , -C (O) -, -O-, -S- and / or -NR ⁴ -, which are arranged so that one of the following 3 types of chain results - (CHR ⁴ ) _1-8 -

G ² -O-, -S-, -NR ⁴ -C (O) -O-, -NR ⁴ -C (O) -,

-NR ⁴ -C (O) -NR ⁴ - or -OC (O) -NR ⁴ -

and p and q are integers from 1 to 6, chosen so that the total number of

Aryl for phenyl, 1, 2 or 3 times

Alkyl group contains 1 to 3 carbon atoms; (wherein if a chain contains more than one -CHR ⁴ group, only one of these -CHR ⁴ groups R ^{4 can be} alkyl, aryl or aralkyl) or A ² Leu, Ile, Nle, Val, Met or one of the groups

(wherein x and y are independently 1 or 2);

R ² and R ^{3 are} independently alkyl,

Arylalkyl, heteroaryl or hydroxy (in which aryl is phenyl, 1, 2 or 3 times substituted phenyl or naphthyl; the substituents of the phenyl group independently of one another are halogen, trihalomethyl, alkoxy, alkyl, alkylthio, hydroxy, nitro, trifluoromethoxy, dialkylamino or cyano are or 2 adjacent positions of the

Phenyl group are connected by -O- (CH ₂ ) _{1 or 2} -O-; Heteroaryl represents indolyl, pyridyl, pyrrolyl, imidazolyl or thienyl; and the alkyl or alkoxy group contains 1 to 3 carbon atoms) or the group

a ring of the general formula

mean where m and n are each 0, 1, 2 or 3, the sum of which is 2, 3, 4 or 5, s is 2 or 3, w is the group

(CH ₂ ) _0-2 aryl, CH (aryl) ₂ , cyclopentyl,

(CH ₂ ) _0-2 cyclohexyl, pyridyl or (where aryl is phenyl, 1, 2 or 3 times substituted phenyl or naphthyl; the substituents of the phenyl group independently of one another are halogen, trihalomethyl,

Are alkoxy, alkyl, cyano, hydroxy, nitro, -CO ₂ CH ₃ , -CO ₂ C ₂ H ₅ or alkylthio or 2

adjacent positions of the phenyl group are connected by -O- (CH ₂ ) _1-2 -O- and alkyl

Contains 1 to 3 carbon atoms);

R ⁵ for an amine of the formula

(C ₁ -C ₅ ) alkyl)) heteroaryl- (C ₁ -C ₅ ) alkyl

(wherein heteroaryl 2-, 3- or 4-pyridyl or

Is 2- or 3-thienyl),

Phenylamino (C ₁ -C ₅ ) alkyl,

Naphthylamino (C ₁ -C ₅ ) alkyl or

(C ₁ -C ₅ ) alkoxy, preferably methoxy,

Are dimethylamine, halogen, trifluoromethyl, -CN or OCF ₃ );

R7 represents hydrogen or (C ₁ -C ₅ ) alkyl;

X represents 0 or H ₂ ;

Y and Z are independently hydrogen

(C ₁ -C ₅ ) alkyl, (C ₁ -C ₅ ) alkyloxy, benzyloxy

(in which the phenyl group is unsubstituted or 1,

Contains 2 or 3 substituents independently

(C ₁ -C ₅ ) alkyl, preferably methyl,

(C ₁ -C ₅ ) alkoxy, preferably methoxy,

Dimethylamine, halogen, trifluoromethyl, -CN or

OCF ₃ ), OCF ₃ , halogen, CF ₃ , CN,

CH ₂ NH ₂ , CONH ₂ , N- (C ₁ -C ₅ alkyl) ₂ ,

NH- (C ₁ -C ₄ ) alkylcarbonyl,

N- (C ₁ -C ₅ ) alkyl-N- (C ₁ -C ₄ ) alkylcarbonyl,

(a) t and u zero

(b) t one and u zero

(c) t and u one each

(d) t two and u zero;

and if t is one and u is zero, R ⁵ also for an amine of formula IV

stands in what

R ⁶ , R ⁷ , Y and Z have the meaning given above and

Naphthyl- (C ₁ -C ₅ ) alkyloxy or

(C ₁ -C ₄ ) alkylcarbonyl, or wherein

R ⁸ and R ⁹ together for oxygen or

-OCH ₂ CH ₂ O-; and the chirality at C * R or S can mean.

2. A compound according to claim 1, wherein

R ¹ and R ^{11 are} as defined in claim 1,

A ¹ D- or L-alanine (Ala), (D- or L-valine

(Val), D- or L-leucine (Leu), D- or

L-isoLeucine (Ile), D- or L-Serine (Ser), D- or L-Threonine (Thr), D- or

L-alloThreonine, D- or L-cysteine (Cys), D- or L-methionine (Met), D- or

for example 3, 4-didehydroproline (Δ (3,4) -Pro), D- or L-hydroxyproline

(Pro (OH)) such as 3-hydroxyproline (Pro (30H)) and 4-hydroxyproline (Pro (40H)), D- or L-azetidine-2-carboxylic acid (Azt), D- or

L-thioproline (Tpr), D- or L-aminoproline (Pro (NH ₂ )) such as 3-aminoproline (Pro (3NH ₂ )) and 4-aminoproline

L-glutamic acid (Glu), D- or

(Pro (SH)) such as 3-mercaptoproline (Pro (3SH)) and 4-mercaptoproline (Pro (4SH)), Tpr (O), Met (O), Tpr (O ₂ ) or Met (O ₂ ), means and their geometric isomers, the hydroxyl and amino groups present can be protected by customary protective groups (for example acyl, carbamoyl or aralkyl (in particular benzyl); and when B is the group - A ² - NR ² R ³

A ^{2 is} a lipophilic amino acid, which is a

Phenyl, 1, 2 or 3 times substituted phenyl, heteroaryl, cyclohexyl or

Cyclopentyl group or a mono- or

Di-C _1-3 alkylamino group, and this ring group or amino group by a 1- to 8-membered chain from the backbone of the amino acid is separated (where the substituents of the

Phenyl group independently of one another halogen,

Trihalomethyl, alkoxy, alkyl, cyano or

Are 1-pyrrolidinyl and the chain is as defined in claim 1) or A ² Leu, Ile, Nle, Val, Met

(wherein x and y are independently 1 or 2);

R ² and R ^{3 are} independently alkyl,

Alkoxy group contains 1 to 3 carbon atoms) or the group

a ring of the general formula

mean wherein m, n and s are as defined in claim 1, and

W the group

- (CH ₂ ) _0-2 aryl, CH (aryl) ₂ , cyclopentyl or (CH ₂ ) _0-2 cyclohexyl (where aryl is phenyl, 1, 2 or 3 times substituted phenyl or naphthyl; the substituents of the phenyl group are independently halogen, trihalomethyl, alkoxy, alkyl or cyano).

A compound according to claim 1 or 2, wherein

or

preferably

is and / or

R ^{11 is} - CH ₂ SO ₂ - or preferably -C (O) -.

A compound according to claim 1, 2 or 3, wherein A ^{1 is} an amino acid bearing one or 2 polar functional groups in the side chain, such as OH, COOH, NH ₂ , guanidine, CONH ₂ , SH.

5. A compound according to claim 4, wherein the functional group in the side chain of A ^{1 is} OH.

6. A compound according to claim 1, 2 or 3, wherein A ¹

Ser, Thr, Trp (For) or Tyr.

7. A compound according to claim 1, 2 or 3, wherein A ¹

Pro or 4-hydroxyproline.

8. A compound according to claim 7, wherein A ¹

Is 4-hydroxyprσlin with 2-S configuration,

in particular

A compound according to any one of claims 1-8, wherein A ^{2 is} an acyclic or cyclic amino acid such as (O-benzyl) Ser, (O-subst. Benzyl) Ser, (O-Benzyl) Thr, cyclohexylalanine, homophenylalanine, 3- (1 Pyrrolyl) alanine, 3- (2,5-dimethyl-1-pyrrolyl) alanine,

3- (1-indolyl) alanine, 2-amino-4- (1-pyrrolyl) butyric acid, 2-amino-5- (1-pyrrolyl) valeric acid, 2-amino-6- (1-pyrrolyl) caproic acid, Leu , Lys (Z), 3- (2-thienyl) alanine, 3- (3-benzothienyl) alanine, 3- (1-isoindolinonyl) alanine, (O-benzyl) Asp,

(O-benzyl) Glu, Trp, (N-Me) Trp, His,

3- (2-thiazolyl) alanine, 3-dimethylamino alanine, - (O-methyl) tyr or 2-naphthylalanine,

Y = H ₂ or 0

being those contained in the amino acids

Phenyl groups can be substituted 1, 2 or 3 times and the substituents are, independently of one another, halogen, trihalomethyl, alkoxy, alkyl or cyano, the alkyl or alkoxy group contains 1 to 3 carbon atoms, and the amino acids given are preferably in S- Configuration.

10. A compound according to claim 9, wherein

or

is.

11. The compound of claim 10, wherein

A ² or

and Y 'H is.

12. A compound according to any one of claims 1 to 10, wherein R ² and R ^{3 are} independently methyl,

Benzyl, phenethyl (the phenyl groups contained therein being substituted by one or two methyl or methoxy groups) or

Is pyridylmethyl.

13. A compound according to claim 12, wherein R ³

Is 2-methylbenzyl.

14. A compound according to any one of claims 1 to 10, wherein the group

a ring

means where m is 1 and n is 1 or 2.

15. A compound according to any one of claims 1 to 10, wherein the group

a ring

means where s is 2 or 3 (preferably 2) and W is as defined in claim 1.

16. The compound of claim 15, wherein W

Cyclohexyl, phenyl, CH (phenyl) ₂ naphthyl or

Is pyridyl, wherein the phenyl groups

are substituted.

17. A compound according to claim 16, wherein when W is phenyl

is monosubstituted by halogen,

Alkoxy, alkyl, cyano, hydroxy, nitro, -CO ₂ CH ₃ , -CO ₂ C ₂ H ₅ or alkylthio.

18. The compound of claim 17, wherein the substituent

the phenyl group methoxy, chlorine, methyl, ethyl,

Is cyano, hydroxy, nitro or methylthio, preferably methoxy, chlorine, methyl, cyano or methylthio.

19. A compound according to claim 17 or 18, wherein the substituent of the phenyl group is in position 2.

20. The compound of claim 16, wherein when W is

Group is -CH (phenyl) ₂ , the phenyl groups are each substituted by a halogen, preferably by fluorine.

21. A compound according to claim 16 or 20, wherein in the -CH (phenyl) ₂ group the two phenyl groups are identical, preferably in the p-position.

22. The compound of claim 1, the

or

or their pharmaceutically acceptable salt.

23. A compound according to any one of claims 1 to 8, wherein R ^{5 is} a group of the general formula II

24. A compound according to claim 23, wherein t one and u is zero or t is two and u is zero or t and u is each one, and R ⁶ , R ⁷ , X, Y and Z are as defined in claim 1.

25. A compound according to any one of claims 1 to 8, 23 and 24, wherein R ^{6 is} benzyl or methoxybenzyl.

26. A compound according to any one of claims 1 to 8 and 23 to 25, wherein R ^{7 is} hydrogen.

27. A compound according to any one of claims 1 to 8 and 23 to 26, wherein X is oxo.

28. A compound according to any one of claims 1 to 8 and 23 to 27, wherein Y and Z are independent of one another

Methoxy, hydrogen, CF ₃ or tert. Are butyl or together - (CH) ₄ - mean.

29. A process for the preparation of a compound according to any one of claims 1 to 28 or its salts, characterized in that the respective amino acids or peptide derivative partial sequences are gradually added by known methods,

Acids and amines condensed and so on

Compound obtained isolated in free form or in the form of the desired salt.

30. Pharmaceutical preparation containing one

A compound according to any one of claims 1 to 28.

31. Use of a connection according to one of the

Claims 1 to 28 for therapy from and

Prevention of neurokinin-mediated

Diseases.