CN101863902B - Preparation method and application of 2-substituted phenyl-2-(4,5,6,7-thiophane [3,2-c] pyridine-5(4H)-group) acetic acid (substituted alkyl alcohol) ester - Google Patents

Abstract

The invention belongs to the technical field of gastric ulcer resistant medicaments and provides 2-substituted phenyl-2-(4,5,6,7-thiophane [3,2-c] pyridine-5(4H)-group) acetic acid (substituted alkyl alcohol) ester with a structure of a formula I and a salt thereof, wherein R1 and R2 are simultaneously or respectively hydrogen, halogen or a nitro group; and R3 is a halogen substituted C1-C4 alkyl group or a hydroxyl group substituted C1-C4 alkyl group. The invention also relates to a preparation method of the compound, and also discloses a medical composition using the compound or the pharmaceutically acceptable salt thereof as an active and effective component and application thereof as gastric ulcer resistant medicaments.

Description

(4,5,6, the 7-THTP is the preparation method and the purposes of [3,2-c] pyridines-5 (4H)-yl) acetate (substituted alkyl alcohol) ester also for 2-substituted-phenyl-2-

Technical field

The invention belongs to medical technical field, or rather, relate to one type of compound and preparation method thereof, contain their pharmaceutical composition and as the purposes of medicament for anti-gastric ulcer with anti-gastric-ulcer effect.

Background technology

Peptide ulceration is common clinical and frequently-occurring disease, has characteristics such as the chronic course of disease, periodical attack, rhythmicity epigastric pain.Think that at present its origin cause of formation is because due to stomach, the duodenum local mucous membrane protection factor and mucosal injury factor balance be damaged.Its protection factor mainly comprises mucus-mucosal barrier, mucosal blood flow and epithelial cell renewal, prostaglandin(PG) and Urogastron etc.; Its infringement factor comprises hydrochloric acid in gastric juice-pepsic digestion, helicobacter pylori, gastrin and the delay of stomach hole portion, eating and drinking without temperance and insomnia, drinks, emotional stress, adverse drug effect etc.

Peptide ulceration mainly refers to stomach ulcer and duodenal ulcer.Stomach ulcer is a kind of common digestive tract diseases, and sickness rate is up to 10%.Though the pathogenesis of stomach ulcer imperfectly understands, most experts think that the invasion and attack of main and the gastric mucosa injury factor and mucous membrane self-defence ability reduce, and helicobacter pylori infection is relevant.The clinical treatment aspect of stomach ulcer mainly contains three kinds: antiacid therapy, receptor blocking method, the sour pump method of inhibition.

Antiacid therapy is early stage treatment to stomach ulcer, adopts in weakly alkaline medicine such as sodium hydrogencarbonate, Magnesium Trisilicate, white lake and the bismuth subnitrate etc. and hydrochloric acid in gastric juice, makes pH value rising in the gastral cavity.This therapy has weakened the effect of negative feedback inhibition gastric acid secretion on the contrary, makes parietal cell generate more hydrochloric acid in gastric juice, causes " knock-on ".Therefore, this method is eliminated basically.

H ₂Receptor antagonist (H ₂RA) can selectivity and histamine H ₂-R combines, and competitiveness is picked up antihistamine H ₂-R effect, thus the gastric acid inhibitory secretion is a present clinical application acid inhibitor the most widely.Like cimitidine, Ranitidine HCL, famotidine etc.

Proton pump inhibitor is present one type of the strongest acid inhibitor, but the strongly inhibited gastric acid secretion, almost completely gastric acid inhibitory and persistent, the healing effect is better than H ₂RA.Like omeprazole, lansoprazole, pantoprazole.Wherein.Omeprazole is by Sweden ASTRA company research and development, and the gastric acid secretion that various stimuluss are caused increases all has strong and persistent restraining effect, than the H that only can block the gastric acid secretion that tissue excitement causes ₂The good effect of receptor blocking agent such as Cimitidine Type A/AB and Ranitidine HCL etc. has rapid alleviating pain, short treating period, advantage that the pathology healing rate is high.And this medicine does not have severe side effect, and tolerance is good, is one of powerhouse of curative effect in the acid inhibitor of having found at present.

At present, in view of the gastric acid inhibitory effect of proton pump inhibitor than H ₂Receptor blocking agent is strong, and the hydrochloric acid in gastric juice barrier of nature is reduced, and causes the growth of pathogen enterobacteria.

Though the medicine of treatment peptide ulceration is a lot, regimen also is variation, and short term effect is all more satisfied, and still recurrence unavoidably after the drug withdrawal is taken medicine for a long time and many untoward reactions are arranged, and needs such new medicine.

Summary of the invention

One object of the present invention is that (4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate (substituted alkyl alcohol) ester and pharmaceutical salts thereof also to disclose one type of 2-substituted-phenyl-2-.

Another object of the present invention is, discloses that (4,5,6,7-THTP also [3,2-c] pyridines-5 (4H)-yl) acetate (substituted alkyl alcohol) ester and pharmaceutical salts thereof is the pharmaceutical composition of main active ingredient with one type of 2-substituted-phenyl-2-.

A further object of the present invention is, (4,5,6, the 7-THTP is the preparation method of [3,2-c] pyridines-5 (4H)-yl) acetate (substituted alkyl alcohol) ester and pharmaceutical salts thereof also to disclose one type of 2-substituted-phenyl-2-.

A further object of the invention is, disclose one type of 2-substituted-phenyl-2-(4,5,6, the 7-THTP also [3,2-c] pyridines-5 (4H)-yl) acetate (substituted alkyl alcohol) ester and pharmaceutical salts thereof as the application of medicament for anti-gastric ulcer aspect.

Combine the object of the invention at present, content of the present invention is set forth in detail.

The present invention is specifically related to the compound and the pharmacy acceptable salt thereof of general formula I structure:

Wherein:

R ¹, R ²Be at the same time or separately: hydrogen, halogen, nitro;

R ³Be the substituted C of halogen ₁-C ₄Alkyl, the substituted C of hydroxyl ₁-C ₄Alkyl.

The compound that the present invention relates to formula I structure, representation compound is following:

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate (2-fluoroethanol) ester also for I-12-(2-chloro-phenyl-)-2-;

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate (ethylene chlorhydrin) ester also for I-22-(2-chloro-phenyl-)-2-;

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate ((2,2,2)-trifluoroethanol) ester also for I-32-(4-fluorophenyl)-2-;

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate ((2,2)-dichlroroethanol) ester also for I-42-(4-fluorophenyl)-2-;

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate (2-hydroxyl ethanol) ester also for I-52-(3-nitrophenyl)-2-;

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate (2-hydroxyl propyl alcohol) ester also for I-62-(3-nitrophenyl)-2-.

The compound that has the I structure among the present invention, its salt means: The compounds of this invention and mineral acid, organic acid salify.Preferred especially salt is: hydrochloride, hydrobromate, hydriodate, vitriol, hydrosulfate, phosphoric acid salt, hydrophosphate, acetate, propionic salt, butyrates, lactic acid salt, mesylate, tosilate, PHENRAMINE MALEATE, benzoate, SUMATRIPTAN SUCCINATE, tartrate, Citrate trianion, fumarate, taurate, gluconate, amino acid salts, or the like.

The preparation route of formula I compound is following:

Can prepare compound I through two kinds of methods:

1. alpha-brominated substituted-phenyl toluylic acid (1) is solvent, band aqua with toluene with substituted alkyl alcohol (2), is catalyzer with the tosic acid, and reflux makes ester class midbody (3).(3) again with 4; 5; 6, the 7-THTP also [3,2-c] pyridines (4) in the presence of acid binding agents such as triethylamine, pyridine, salt of wormwood, yellow soda ash, sodium hydrogencarbonate, saleratus, sodium hydroxide or Pottasium Hydroxide; With methylene dichloride, trichloromethane, acetonitrile or toluene etc. is solvent, and 25～100 ℃ of reactions make compound I;

2. (5) and (2) are solvent with methylene dichloride or trichloromethane in the presence of DCC and DMAP or Vinyl chloroformate, and-5～25 ℃ of reactions make compound I.

Reaction is made various midbodys or products therefrom be dissolved in a kind of among ether, DMF, acetone, methyl alcohol, ethanol, ETHYLE ACETATE or the DMSO, dropping inorganic acid or organic acid solution are processed pharmacy acceptable salt.

Specifically be that all cpds is dissolved in a kind of among ether, DMF, acetone, methyl alcohol, ethanol, ETHYLE ACETATE or the DMSO, the dripping hydrochloric acid diethyl ether solution is processed hydrochloride to pH=2 under ice-water bath; Or all cpds is dissolved in a kind of among ether, DMF, acetone, methyl alcohol, ethanol, ETHYLE ACETATE or the DMSO, and adding and wait a mole Hydrocerol A, heated and stirred gets its Citrate trianion; Or all cpds is dissolved in a kind of among ether, DMF, acetone, methyl alcohol, ethanol, ETHYLE ACETATE or the DMSO, drips the vitriol oil down to pH=3, process vitriol in ice-water bath, or the like.

This compounds is effective for the human disease that causes because of stomach ulcer of treatment.Although compound of the present invention can be without the direct administration of any configuration, described all cpds preferably uses with the form of pharmaceutical prepn, and route of administration can be non-enteron aisle approach (like vein, muscle administration) and oral administration.

The preparation of pharmaceutical compositions method of The compounds of this invention is following: use standard and conventional technology; Acceptable solid or liquid vehicle are combined, and make it at random with technology of pharmaceutics on acceptable auxiliary and vehicle combine to be prepared into particulate or microballoon.Solid dosage comprises tablet, discrete particles, capsule, slow releasing tablet, sustained release pellet or the like.Solid carrier can be at least a material, and it can serve as thinner, flavouring agent, solubilizing agent, lubricant, suspension agent, tackiness agent, disintegrating agent and coating agent.Inert solid carrier comprises trimagnesium phosphate, Magnesium Stearate, smoothers sugar, lactose, pectin, Ucar 35, Polysorbate 80, dextrin, starch, gelatin, cellulose substances for example methylcellulose gum, Microcrystalline Cellulose, low melt point paraffin, polyoxyethylene glycol, N.F,USP MANNITOL, theobroma oil etc.Liquid dosage form comprises solvent, suspension-s for example injection, pulvis or the like.

The amount of the active ingredient that contains in pharmaceutical composition and the unit dosage form (The compounds of this invention) can specifically be applied according to patient's the state of an illness, the situation of diagnosis, and the amount of used compound or concentration are regulated in the scope of a broad.Usually, the weight range of active compound is 0.5%～90% (weight) of compsn, and another preferred range is 0.5%～70%.

Compound and pharmacy acceptable salt thereof with formula I structure of the present invention has obvious effects aspect anti-gastric-ulcer.

Further specify the anti-gastric-ulcer effect of The compounds of this invention below through pharmacodynamic experiment.

Effect test to rat gastric ulcer:

Acetate calcination gastric ulcer model:

1. test medicine and reagent:

The vitriol of the hydrochloride of compound I-1, I-2, I-3, I-4, I-5, I-6, I-1, the Citrate trianion of I-3, I-5 (synthetic) by the contriver.

2. laboratory animal:

Wistar rat: 150～200g, male and female half and half, Institute of Experimental Animals, Chinese Academy of Medical Sciences provides, credit number SCXK (capital) 2005-0013.

3. experimental technique and result:

Get 90 of 150～200g Wistar rats, male and female half and half, fasting 48h freely drinks water.Use the etherization rat, the abdominal cavity is opened in sterilization; Expose stomach, inject 10% acetic acid 0.05mL at body of stomach and pyloric antrum intersection with microsyringe 0.4～0.5mm place under the rat serous coat, the blank group is injected the saline water of isodose; The reduction stomach is sewed up stomach wall.The postoperative rat freely drinks water, and begins normal raising next day.

Animal divides into groups and administration:

Divide 5 groups with rat at random by sex and body weight, 10 every group, be respectively (1) model group: modeling, the 3rd day begins to irritate stomach with saline water; (2) compound group: modeling, the 3rd day begins to irritate stomach with compound (0.2g/kg).

The 15th day sacrificed by decapitation rat opens abdomen, ligation stomach pylorus and orifice of the stomach, and full stomach takes out.In stomach, inject 1% Superlysoform 10mL, again stomach is soaked in 1% formalin solution 10min with fixing stomach ectonexine.Cut off stomach along greater gastric curvature, stomach is turned up, outwell content and wash gently with tap water and remove gastric content, stomach is flattened on glass plate, corresponding mucosal surface is observed the ulceration situation at injection acetic acid soln position.

Rats acetic acid is burnt the influence of type gastric ulcer model

Test-results shows that behind the rat stomach serous coat injected acetate, can make coat of the stomach tissue damaged, ulcer is rounded or oval, central concave, little protuberance all around.Each administration group all has antiulcer action in various degree.The UI of each administration group and model group compare P all＜0.05.This result shows that compound of the present invention has the significant protection effect to rats acetic acid calcination type gastric ulcer model.

Embodiment

Below in conjunction with instance the present invention is done explanation further.It is indicative that instance is merely, and means that never it limits scope of the present invention by any way.Described compound is through performance liquid chromatography (HPLC), and thin-layer chromatography (TLC) detects.Can adopt subsequently such as ir spectra (IR), nuclear magnetic resonance spectrum ( ¹H-NMR, ¹³C-NMR), further its structure of conclusive evidence such as mass spectrum (MS).

Reference implementation example 1:

Referenced patent US 5,036, and the method for 156A1 (Bouisset et al.) prepares compound (1-1):

Can make white crystalline powder, m.p.106～110 ℃, HPLC:99.6%.

Reference implementation example 2:

The same, referenced patent US 5,036; The method of 156A1 (Bouisset et al.) prepares compound: alpha-brominated para-fluorophenylacetic acid, alpha-brominated m nitrophenylacetic acid, then with 4,5; 6, the 7-THTP is the further reacting generating compound of [3,2-c] pyridine (5a), (5b) also.

Can make white crystalline powder, Rf:0.36 [developping agent: v (ETHYLE ACETATE): v (methyl alcohol)=7: 3].

Can make yellow crystalline powder, Rf:0.32 [developping agent: v (ETHYLE ACETATE): v (methyl alcohol)=7: 3].

Embodiment 1:

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate (2-fluoroethanol) ester (compound I-1) also for 2-(2-chloro-phenyl-)-2-

In the reaction flask that whisking appliance, condensing surface, water trap are housed, add alpha-brominated NSC 4613 5.0g (0.020mol), 2-fluoroethanol 7.06g (0.110mo) l), tosic acid 1.0g, toluene 30mL, reflux.When going out the moisture in the water trap to obvious anhydrous generation in the reaction process, add a small amount of alcohol if still anhydrous telling can be thought and react completely.Be cooled to room temperature, with saturated sodium bicarbonate solution washing 2 times, distilled water wash 2 times is got the organic layer anhydrous sodium sulfate drying, filters, and evaporate to dryness gets light yellow oily liquid.To go up the step reaction product and pack in the dry single port bottle, and with the toluene dissolving, add Anhydrous potassium carbonate 5.0g (0.036mol), and drip 4,5,6 under the stirring at room, the 7-THTP is [3,2-c] pyridine 3.07g (0.022mol) also, some plate control reaction process.The after-filtration evaporate to dryness that reacts completely, with quick preparative hplc separate colourless transparent oil liquid.Yield 94.8%.Rf:0.41 [developping agent: v (sherwood oil): v (ETHYLE ACETATE)=4: 1]. ¹H-NMR(CDCl ₃，400MHz)δ：2.871～2.934(m，4H)，3.670(d，J＝14Hz，1H)，3.734(d，J＝14Hz，1H)，4.274～4.502(m，3H)，4.610～4.628(t，1H)，4.958(s，1H)，6.662(d，J＝4.8Hz，1H)，7.048(d，J＝4.8Hz，1H)，7.233～7.295(m，2H)，7.385～7.406(m，1H)，7.669～7.693(q，1H)。IR?v：3412，3066，2959，1751，1209，1182，1035cm ^-1。

Embodiment 2:

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate (ethylene chlorhydrin) ester (compound I-2) also for 2-(2-chloro-phenyl-)-2-

Replace the 2-fluoroethanol with ethylene chlorhydrin, with reference to the method synthetic compound I-2 of embodiment 1.Colourless transparent crystal, yield 93.7%, m.p.91.8～92.8 ℃.Rf:0.43 [developping agent: v (sherwood oil): v (ETHYLE ACETATE)=4: 1]. ¹H-NMR(CDCl ₃，400MHz)δ：2.877～2.940(m，4H)，3.617～3.668(q，3H)，3.744(d，J＝14Hz，1H)，4.337～4.412(m，2H)，4.947(s，1H)，6.664(d，J＝4.8Hz，1H)，7.052(d，J＝5.2Hz，1H)，7.235～7.298(m，2H)，7.384～7.407(m，1H)，7.679～7.703(m，1H)。IR?v：3099，3085，2962，2931，2902，2844，1744，1204，1183，1047，1035，761cm ^-1。

Embodiment 3:

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate ((2,2,2)-trifluoroethanol) ester (compound I-3) also for 2-(4-fluorophenyl)-2-

, the reaction flask of drying tube adds (5a) 3.44g in being housed, methylene dichloride 50mL, and (2,2,2)-trifluoroethanol 5.07g (0.07mol), DCC 2.54g (0.012mol), DMAP 1.37g (0.011mol) stirs under the room temperature.Behind the 3h, filter, it is a small amount of to add 36% hydrochloric acid, washes 2 times, and saturated sodium bicarbonate solution is washed 2 times, and saturated nacl aqueous solution is washed 1 time, obtains the organic layer dry filter, evaporate to dryness.Fast preparative hplc separate colourless transparent oil liquid.Rf:0.44 [developping agent: v (sherwood oil): v (ETHYLE ACETATE)=4: 1].

Embodiment 4:

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate ((2,2)-dichlroroethanol) ester (compound I-4) also for 2-(4-fluorophenyl)-2-

In the exsiccant reaction flask, add (5a) 5.0g, triethylamine 1.80g (0.018mol), chloroform 50mL; Be stirred to dissolving under-5 ℃; Drip the mixed solution of Vinyl chloroformate 1.94g (0.018mol) and 20mL chloroform then, be warming up to 10 ℃ after dropwising, stir 30min.Drip 2 again, the mixed solution of 2-dichlroroethanol 2.05g (0.018mol) and chloroform 20mL.Dropwise continued and stir 0.5h.Stopped reaction with reaction solution washing 3 times, is got the organic layer drying with zero(ppm) water, filters evaporate to dryness.Fast preparative hplc separate faint yellow transparent oily liquid.Rf:0.42 [developping agent: v (sherwood oil): v (ETHYLE ACETATE)=4: 1].

Embodiment 5:

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate (2-hydroxyl ethanol) ester (compound I-5) also for 2-(3-nitrophenyl)-2-

Replace (5a) with (5b), terepthaloyl moietie replaces (2,2,2)-trifluoroethanol, with reference to the method synthetic compound I-5 of embodiment 3, yield 88.7%.Rf:0.39 [developping agent: v (sherwood oil): v (ETHYLE ACETATE)=4: 1].

Embodiment 6:

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate (2-hydroxyl propyl alcohol) ester (compound I-6) also for 2-(3-nitrophenyl)-2-

Replace (5a) with (5b), 1, the 2-Ucar 35 replaces 2, and the 2-dichlroroethanol is with reference to the method synthetic compound I-6 of embodiment 4, yield 85.3%.Rf:0.37 [developping agent: v (sherwood oil): v (ETHYLE ACETATE)=4: 1].

Embodiment 7:

Compound I-1 one-tenth hydrochloride: get I-1 oily product 2.0g, be dissolved in the 10mL anhydrous diethyl ether.Ice-water bath is cooled to 0 ℃, drip 25% hydrochloric acid diethyl ether solution to pH be 2, continue at stir about 1h under the ice-water bath.Filter, get white solid.

Embodiment 8:

Compound I-3 one-tenth Citrate trianion: get I-3 oily product 2.0g, be dissolved in the 15mL absolute ethyl alcohol.Be heated to the back adding that refluxes and wait a mole Hydrocerol A, continue at the about 2h of stirring reaction down that refluxes.Reaction finishes, and under room temperature, leaves standstill 24h.Filter, get light yellow solid.

Embodiment 9:

Compound I-5 one-tenth vitriol: get I-5 oily product 2.0g, be dissolved in the 20mL anhydrous methanol.Ice-water bath is cooled to 5 ℃, drip concentrated sulfuric acid solution to pH be 3, continue at stir about 0.5h under the ice-water bath.Filter, get yellow solid.

For 2-substituted-phenyl-2-(4 of the present invention is described more fully; 5,6,7-THTP also [3; 2-c] pharmaceutical composition of pyridine-5 (4H)-yl) acetate (substituted alkyl alcohol) ester; Following FORMULATION EXAMPLE is provided below, and said embodiment only is used for explanation, rather than is used to limit scope of the present invention.Said preparation can use any active compound and the salt thereof in the The compounds of this invention.

Embodiment 10:

Prepare hard gelatin capsule with following compositions:

Consumption/capsule

Compound I-2 72mg

Pregelatinized Starch 100mg

Sodium starch glycolate 10mg

Magnesium Stearate 20mg

10% polyvidone ethanolic soln is an amount of

Preparation technology: supplementary material is dry in advance, and it is subsequent use to cross 100 mesh sieves.Press recipe quantity with the mentioned component mixing, cross 60 mesh sieves three times, add an amount of 10% polyvidone ethanol (95%) solution system softwood, cross 18 mesh sieves and granulate, 40 ℃ of dryings are crossed the whole grain of 16 mesh sieves, are packed in the hard gelatin capsule.

Embodiment 11:

Prepare tablet with following compositions:

Consumption/sheet

The Citrate trianion 65mg of compound I-3

Starch 45mg

Microcrystalline Cellulose 40mg

Talcum powder 1mg

Prist 3mg

Preparation technology: supplementary material is dry in advance, and it is subsequent use to cross 100 mesh sieves.Earlier with the abundant mixing of the auxiliary material of recipe quantity.Bulk drug is added in the auxiliary material to increase progressively dilution method, and each abundant mixing of added-time 2-3 time guarantees medicine and the abundant mixing of auxiliary material; Cross 20 mesh sieves, dry 2h in 55 ℃ of ventilated drying ovens, dried particle cross the whole grain of 16 mesh sieves; Measure midbody content, mix compressing tablet on tabletting machine.

Embodiment 12:

The preparation of injection liquid:

The hydrochloride 40mg of compound I-1

Ucar 35 90mg

Polysorbate 80 is an amount of

Zero(ppm) water 300mL

Preparing method: get activeconstituents and join in the water for injection that dissolves sorbyl alcohol and Ucar 35, add medicinal basic adjusting pH value to 4～8 and make its dissolving.Add gac, whip attachment 30min, carbon removal, smart filter, embedding, sterilization.

Embodiment 13:

The preparation of injection lyophilized powder:

The vitriol 44mg of compound I-5

Medicinal basic 0.1-7.0%

N.F,USP MANNITOL 55-80%

Preparing method: get activeconstituents and add water for injection, regulate pH value to 4～8 with medicinal basic and make its dissolving.Add N.F,USP MANNITOL again, carry out autoclaving by the requirement of injection, add gac, adopt filtering with microporous membrane, filtrating is carried out packing, adopts freeze-drying, makes loose block, seals, and promptly gets.

Claims (8)

1. the compound or its pharmacy acceptable salt that have formula I structure:

Wherein:

R ¹, R ²Be at the same time or separately: hydrogen, halogen, nitro;

R ³Be the substituted C of halogen ₁-C ₄Alkyl, the substituted C of hydroxyl ₁-C ₄Alkyl.

2. compound or its pharmacy acceptable salt with formula I structure as claimed in claim 1 is characterized in that:

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate (2-fluoroethanol) ester also for I-1 2-(2-chloro-phenyl-)-2-;

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate (ethylene chlorhydrin) ester also for I-2 2-(2-chloro-phenyl-)-2-;

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate ((2,2,2)-trifluoroethanol) ester also for I-3 2-(4-fluorophenyl)-2-;

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate ((2,2)-dichlroroethanol) ester also for I-4 2-(4-fluorophenyl)-2-;

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate (2-hydroxyl ethanol) ester also for I-5 2-(3-nitrophenyl)-2-;

(4,5,6, the 7-THTP is [3,2-c] pyridines-5 (4H)-yl) acetate (2-hydroxyl propyl alcohol) ester also for I-6 2-(3-nitrophenyl)-2-.

3. compound or its pharmacy acceptable salt with formula I structure as claimed in claim 1, its pharmacy acceptable salt refers to: compound and mineral acid, organic acid salify.

4. compound or its pharmacy acceptable salt with formula I structure as claimed in claim 3, preferred: hydrochloride, hydrobromate, hydriodate, vitriol, hydrosulfate, phosphoric acid salt, hydrophosphate, acetate, propionic salt, butyrates, lactic acid salt, mesylate, tosilate, PHENRAMINE MALEATE, benzoate, SUMATRIPTAN SUCCINATE, tartrate, Citrate trianion, fumarate, taurate, gluconate, amino acid salts.

5. the preparation method of claim 1 Chinese style I compound is characterized in that:

Prepare through two kinds of methods:

1. alpha-brominated substituted-phenyl toluylic acid ( 1) and substituted alkyl alcohol ( 2) be solvent, band aqua with toluene, be catalyzer with the tosic acid, reflux make ester class midbody ( 3), ( 3) again with 4,5,6, the 7-THTP also [3,2-c] pyridine ( 4) in the presence of triethylamine, pyridine, salt of wormwood, yellow soda ash, sodium hydrogencarbonate, saleratus, sodium hydroxide or Pottasium Hydroxide, be solvent with methylene dichloride, trichloromethane, acetonitrile or toluene, 25～100 ℃ of reactions make compound I;

2. ( 5) and substituted alkyl alcohol ( 2) in the presence of DCC and DMAP or Vinyl chloroformate, be solvent with methylene dichloride or trichloromethane ,-5～25 ℃ of reactions make compound I,

6. the pharmaceutical composition of an anti-gastric-ulcer, it comprises formula I compound as claimed in claim 1 or its pharmacy acceptable salt and one or more pharmaceutical carriers, vehicle or the thinner of treating significant quantity.

7. any described formula I compound or its pharmacy acceptable salt application aspect the preparation medicament for anti-gastric ulcer in the claim 1,3～4.

8. the application of the described formula I compound of claim 2 aspect the preparation medicament for anti-gastric ulcer.