This invention relates to a novel cyclopenteneheptenoic acid derivative having the following formula ##STR1## wherein R.sub.1 is hydrogen, --COCH.sub.3, --COCF.sub.3, --CO--phenyl, or a hydroxyl protecting group such as tetrahydropyranyl, tetrahydrofuranyl, or tri-lower alkylsilyl; wherein R.sub.2 is --CH.sub.2 OR.sub.1, --COOH, --COOR, --CHO, --CH.sub.2 --OSi(R.sub.12).sub.3, ##STR2## wherein R is lower alkyl and each R.sub.12 is independently lower alkyl or aryl; and wherein Y is ethylene, cis-vinylene, trans-vinylene, or acetylene. Also disclosed is a novel process for preparation of the above-defined cyclopenteneheptenoic acid derivative. This process involves coupling of a higher order cuprate complex with a chiral cyclopentene compound. The resultant product is particularly useful as a starting compound for high yield synthesis of optically active prostaglandins.
本发明涉及一种新型
环戊烯庚烯酸衍
生物,其具有以下式子:##STR1##
其中,R1是氢、--COCH3、--COCF3、--CO--苯基或羟基保护基,如
四氢吡喃基、
四氢呋喃基或三低烷基
硅基;R2是-- OR1、--COOH、--COOR、--CHO、--
CH2--OSi(R12)3、##STR2##
其中,R为低烷基,每个R12独立地为低烷基或芳基;Y为
乙烯、顺式
乙烯、反式
乙烯或
乙炔。本发明还公开了一种制备上述
环戊烯庚烯酸衍
生物的新方法。该方法涉及将高阶杯酸盐配合物与手性
环戊烯化合物偶联。所得产物特别适用于高产率合成光学活性
前列腺素的起始化合物。