PROCESS FOR PRODUCING PREGNANE-4,9(11), 16-TRIENE-3,20-DIONE DERIVATIVES

Hungary Patent

PATENT NO 212309
APP PUB NO HU-T63174-A
SERIAL NO

9201715

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The invention relates to the compounds (I): where Hal is chlorine or bromine, R is (C1-C6)alkyl, (C7-C15)aralkyl or a silylated residue, K is a group (n = 2 or 3) and the wavy lines symbolise the possible existence of 2 isomers, to their preparation and to their application in the preparation of the compounds (A): where R1 is a (C1-C8)acyl and new intermediate.

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