ES219757A1 - Procedure for the preparation of derivatives of 1, 3-dialcohil-xantinas (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the preparation of derivatives of 1, 3-dialcohil-xantinas (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
JR Geigy AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JR Geigy AGfiledCriticalJR Geigy AG
Priority to ES219757ApriorityCriticalpatent/ES219757A1/en
Publication of ES219757A1publicationCriticalpatent/ES219757A1/en
Process for the preparation of 13-dialkyl-xanthine derivatives characterized in that compounds of general formula ** are prepared in which they mean r1 and R2 alkyl or alkenyl radicals3 and r4 hydrogen or lower molecular weight alkyl or alkenyl radicals together with the nitrogen atom also an alcoholicimino radical with 5-6 ring links or the morpholino radical 5 hydrogen or an alkyl radical of lower molecular weight and xo or shaciendo react carbamic acid derivatives able to react containing the radicals R3 and R4 or R3 alone in the nitrogen is halohydrids of carbamic acid or isocyanates with alkalylic compounds of 13-dialcohil-xanthines of the general formula ** or with these same substances or by reacting carbonic acid derivatives to react as halogenoformic or phosgeneconstituents 13-dialcohil-xanthines which respond to the above general formula or their alkano compounds and because they are reacted with 7-carbonic acid derivatives of the 13-dialcohyl-xanthines thus obtainedamines containing the radicals R3 and R4 </sub >
ES219757A1955-01-261955-01-26Procedure for the preparation of derivatives of 1, 3-dialcohil-xantinas (Machine-translation by Google Translate, not legally binding)
ExpiredES219757A1
(en)