Compounds of general formula (A),
wherein
R1 represents a C1-4 alkyl group;
X represents a residue of an acid;
either B represents a group -COOR2 (in which R2 represents a C1-4 alkyl group) and Z represents a group
(in which R3 and R5, which may be the same or different, each represents a C1-4 alkyl radical) or B represents a group -COOH or a hydrogen atom and Z represents a group -CH2COOH, of use in the enantioselective synthesis of optically active 14-oxo-E-homo-eburnane derivatives.
通式(A)化合物,其中 R1 代表 C1-4 烷基;X 代表酸的残基;B 代表基团 -COOR2(其中 R2 代表 C1-4 烷基)和 Z 代表基团(其中 R3 和 R5 可以相同或不同,各自代表 C1-4 烷基)或 B 代表基团 -COOH 或氢原子和 Z 代表基团 -CH2COOH,用于光学活性 14-氧代-E-高本烷衍
生物的对映选择性合成。