| 摘要 |
1. Compounds of the formula I see diagramm : EP0001255,P17,F1 in which X and Y together denote oxygen or each denote hydrogen or a hydroxyl group, in which case X and Y are different, R**1 denotes a straight-chain, or branched alkyl radical with up to 8 carbon atoms, in which one CH2 groups is replaced by an oxygen atom, or a hydrogen atom can be replaced by a hydroxyl group, the oxygen functional group being separated by at least two carbon atoms from the carboxyl group of the prostaglandin, or a phenalkyl radical in which the alkylene group has up to 5 carbon atoms and one of the CH2 groups is replaced by an oxygen atom ; R**2 denotes a straight-chain, branched, alkyl radical with three to five carbon atoms or a cycloalkyl radical with five to seven carbon atoms and R**3 denotes hydrogen. |
