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Publication of MXPA97000547ApublicationCriticalpatent/MXPA97000547A/en
Publication of MX9700547ApublicationCriticalpatent/MX9700547A/en
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Abstract
The present invention discloses a process for the preparation of compounds of formula I, wherein A together with two carbon atoms, which are referred to as alpha and beta, represent one of the (a), (b) and (c) groups, R1 represents cyane or a group of formula -COOR4, R2 represents hydrogen, R3 represents lower alkyl, or R2 and R3 together represent a di- or trimethylene group, R4 represents lower alkyl or benzyl; and R5, R6 each mean nitrogen, halogen, trifluoromethyl, lower alkoxyl or nitro and carbon atom referred to as y comprises an S configuration, when R2 is different from hydrogen; said process comprising reacting a compound of formula (II) wherein A, R2 and R3 are as before and X represents a halogen atom, in the presence of a base with a compound of formula (III), wherein R7 is lower alkyl or cycloalkyl and R1 is as previously described.
MX9700547A1996-02-021997-01-21Process for the preparation of imidazodiazepine derivatives.
MX9700547A
(en)