申请人:Teijin Limited
公开号:US04132726A1
公开(公告)日:1979-01-02
Novel optically active compounds of 4-protected hydroxy-cyclopent-2-en-1-ones of the formula ##STR1## wherein R is a splittable protective group for an alcoholic hydroxyl group, and a process for preparing the 4-protected hydroxycyclopent-2-en-1-ones by oxidizing monohydroxy-protected derivatives of cyclopent-1-ene-3,5-diol expressed by the following formula ##STR2## wherein R is the same as defined above. Optically active 4-hydroxycyclopent-2-en-1-one which is an optically active isomer of the compound of formula (2); or optically active cyclopent-1-en-3,5-diol (R-isomer) and a novel diacyl derivative of the diol, a novel monoacylmonosilyl-derivative of the diol and a novel monoacylmonotetrahydropyranol-derivative of the diol, which are intermediates for the protective derivative of formula (1). Processes are also provided for preparing the protective derivatives of formula (1) by converting these intermediates by esterification, hydrolysis, enzymatic processes, etc. The optically active compounds of formula (2) are useful as precursors for the preparation of prostaglandin or its analogues.
本发明涉及一种4-保护羟基环戊-2-烯-1-酮的光学活性化合物,其化学式为##STR1##其中R是可分离的羟基保护基团,并提供了一种制备4-保护羟基环戊-2-烯-1-酮的方法,通过氧化以下化学式所示的环戊-1-烯-3,5-二醇的单羟基保护衍生物来实现:##STR2##其中R与上述定义相同。本发明还涉及一种光学活性的4-羟基环戊-2-烯-1-酮,它是化合物式(2)的光学异构体;或者光学活性的环戊-1-烯-3,5-二醇(R-异构体)以及一种新型的二酰基衍生物、一种新型的单酰基单硅烷基衍生物和一种新型的单酰基单四氢吡喃基衍生物,它们是化合物式(1)的保护衍生物的中间体。本发明还提供了通过酯化、水解、酶法等将这些中间体转化为化合物式(1)的保护衍生物的方法。化合物式(2)的光学活性化合物可用作前体,用于制备前列腺素或其类似物。