Process for the preparation of the 5z-isomers of 2,3,...

Details Process for the preparation of the 5z-isomers of 2,3,... Process for the preparation of the 5z-isomers of 2,3,...

C - Chemistry, Metallurgy

07

D

260/235.01

C07D 307/935 (2006.01) A61K 31/23 (2006.01) C07D 307/93 (2006.01) C07D 307/937 (2006.01) A61K 31/34 (2006.01)

Patent

CA 1209992

Abstract of the Invention The invention relates to the preparation of the 5Z-isomers of 2,3,4-trinor-1,5-inter-m-phenylene- prostacyclin derivatives of the formula Image (I) wherein R1 is a hydrogen atom, a cation or a lower alkyl radical, R2 is hydrogen or methyl, A is a member of the group consisting of the radicals - -CH2-CH2-, (trans)-CH=CH- and -C?C- and B is an alkyl radical or a cycloalkyl radical optionally substituted by a lower alkyl radical by isomerization of a compound of the formula Image (IIE) wherein R2, A and B have the same meaning as above and R? is a lower alkyl or aralkyl radical,

424997

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