abstract |
PURPOSE: The title cpds. I(Y is trans-vinylene or ethylene;R 1 is H or alkyl; R 2 is H, methyl or ethyl; R 3 is a single bond or 1-4C alkylene;R 4 is H, alkyl, phenyl, etc.;R 5 and R 6 together form oxo, or one of them is H and the other is OH, acyloxy or dialkoxyphosphonyloxy), e.g. 5ξ 11α, 15α-trihydrocy-6ξ, 9αepoxyprosto-trans-13-enoic acid methylester. n COPYRIGHT: (C)1978,JPO&Japio |