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Lacer SA
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Lacer SA
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Application filed by Lacer SAfiledCriticalLacer SA
Priority to ES416663ApriorityCriticalpatent/ES416663A1/en
Publication of ES416663A1publicationCriticalpatent/ES416663A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Method for obtaining new derivatives of isoteophyllins, in particular 9- (beta-aminoethyl) -isoteophyllins, of the general formula: **(See formula)** wherein R1 and R2 are hydrogen atoms, alkyl, hydroxyalkyl radicals or, together with the nitrogen atom, a substituted or unsubstituted heterocyclic moiety that may in turn contain another heteroatom, characterized in that from 1,3-dimethyl -4,5-diaminouracils, suitably substituted, is operated by condensation of the substituted 1,3-dimethyl-4,5-diaminouracils, of the general formula: **(See formula)** wherein R1 and R2 have the aforementioned meaning with carbon sulfide and cyclization to 8-mercapto-9- (beta-aminoethyl) -isotheophyllines and then desulfurizing the compound mercapto, preferably with Raney nickel. (Machine-translation by Google Translate, not legally binding)
ES416663A1973-07-061973-07-06Method of obtaining new derivatives of isotophylins. (Machine-translation by Google Translate, not legally binding)
ExpiredES416663A1
(en)
Procedure for preparing derivatives of 9-10-dihydro-4h-benzo (4,5) ciclohepta (2,1-b) thiophene. (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of acil-anylides with basic substitutors and their derivatives (Machine-translation by Google Translate, not legally binding)