| 摘要 |
<p>Object: To produce E-prostaglandins in a high yield and in a short time with suppressed formation of isomers. Structure: A process for preparing E-prostaglandins represented by the formula: (wherein A, R6 and R7 represent respectively an arbitrary group which does not participate in the reaction; B represents a vinylene or ethynylene group; and R4 and R5 may be the same or different from each other and each represents a hydrogen atom or a protective group of the hydroxyl group) which comprises reacting allyl esters of E-prostaglandins represented by the formula: (wherein R1 and R2 may be the same or different from each other and each represents a hydrogen atom or a lower alkyl group; R3 represents a hydrogen atom, a lower alkyl group, an alkenyl group or an aryl group; and A, B, R4, R5, R6 and R7 are as defined above) with at least one substance selected from the group consisting of bases and formic acid in the presence of a zero- or divalent palladium complex or a salt thereof.</p> |
