Cis-Bicyclo¬4.3.0 non-2-ene derivatives

摘要

A cis-bicyclo[4.3.0]non-2-ene derivative of the formula: wherein R is a hydrogen atom, or a protecting group for a hydroxyl group, R<1> is a hydrogen atom, a C1-C12 straight or branched chain alkyl group, a substituted or unsubstituted phenyl group, a C6-C12 aralkyl group containing a condensed aromatic ring or an aromatic hetero ring, or 1 equivalent of a cation, A is -CH=CH- CH2-, or -CH2-CH2-O-, R<2> is a C3-C10 straight or branched chain alkyl group, a C1-C3 alkyl group substituted by an aryloxy group which may be substituted, a C3-C12 straight or branched chain alkenyl group, a C3-C8 straight or branched chain alkynyl group, or a C1-C3 alkyl group substituted by a phenyl or phenoxy group which may be substituted, by a C1-C6 alkoxy group or by a C5-C8 cycloalkyl group, R<3> is a hydrogen atom, a methyl group, or a vinyl group, and X is a halogen atom.