| 摘要 |
The present invention relates to prostaglandin analogues of the general formula: <IMAGE> [wherein X represents cis or trans-vinylene or ethylene, Z represents <IMAGE> R1 represents a hydrogen atom or a straight- or branched-chain alkyl group containing from 1 to 12 carbon atoms, R2 represents a hydrogen atom or a methyl group, R3 represents a straight- or branched-chain alkylene group containing from 1 to 7 carbon atoms and R4 represents a cycloalkyl group containing from 5 to 7 carbon atoms, a grouping of the formula: <IMAGE> (wherein R5 and R6, which may be the same or different, each represent a hydrogen atom or halogen atom, a trifluoromethyl group or a straight- or branched-chain alkyl group containing from 1 to 4 carbon atoms), or a grouping of the formula: <IMAGE> (wherein R5 and R6 are as hereinbefore defined), or R3 and R4 together represent a straight- or branched-chain alkyl group containing from 1 to 10 carbon atoms, and (1) the double bond between C3-C4 is trans or cis, or trans and cis, when X is cis-vinylene or ethylene, and (2) the double bond between C3-C4 is trans, when X is trans-vinylene, and the double bond between C13-C14 is trans] and cyclodextrin clathrates of such acids and esters, and when R1 represents a hydrogen atom, non-toxic salts thereof, which exhibit characteristic prostaglandin-like activities. |
