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Lacer SA
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Lacer SA
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Application filed by Lacer SAfiledCriticalLacer SA
Priority to ES416595ApriorityCriticalpatent/ES416595A1/en
Publication of ES416595A1publicationCriticalpatent/ES416595A1/en
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Abstract
Method for obtaining isoteophylline derivatives, 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 have another heteroatom, characterized in that from 1,3-dimethyl -4.5-diaminduracils, suitably substituted, is operated by condensation of 1,3-dimethyl-4,5-diaminouracil of the general formula: **(See formula)** -where R1 and R2 have the aforementioned meaning- with formic acid orthoesters under ring closure. (Machine-translation by Google Translate, not legally binding)
ES416595A1973-07-051973-07-05Method of obtaining derivatives of isoteofilin. (Machine-translation by Google Translate, not legally binding)
ExpiredES416595A1
(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)
Procedure for the obtaining of derivatives of 5,6,7,9, 10,14b-hexahidro-isoquinolo- (2,1-d) benzo (1,4) -diacepin-6ona. (Machine-translation by Google Translate, not legally binding)