| 摘要 |
<p>There are disclosed a bicyclo[3.3.0]octane derivative represented by the formula: <CHEM> wherein R<1>: a hydrogen atom or a protective group of a hydroxy group; <CHEM> where R<5>: a hydrogen atom or a protective group of a hydroxy group, R<6>: a straight, branched or cyclic alkyl group, alkenyl group or alkynyl group each having 5 to 10 carbon atoms, and X: a vinylene group or an acetylene group; R<3>: a formyl group, -Y-(CH2)2-COOR<7> or -CH2R<8>; where R<7>: a hydrogen atom or an alkyl group, R<8>: a hydroxy group, an acetyloxy group or a butenyl group, and Y: an ethylene group, a vinylene group or an alkylene group; R<4>: a hydroxy group when the compound being an octane derivative, or a hydrogen atom when the compound being an octene derivative; and dotted line: optional presence of a double bond; provided that when R<1> is <CHEM> R<3> being -(CH2)4-COOR<7> is excluded, and a process for producing the same. The compound of this invention and the process for producing the same are available for producing a 9(0)-methano- DELTA <6(9, alpha )>-PGI1.</p> |
