method for the preparation of a pharmaceutical preparation with operation for prevention of pregnancy on the basis of pge and pgf amp; amp; 012 - amp; amp; 012alfa - derivatives.and method for preparation of it applied derivatives of pge and pgf amp; amp; 012 - amp; amp; 012alfa.

摘要

Bicyclic lactone intermediates useful for preparing prostaglandin E2-type, F2-type, A2-type, and B2-type compounds with one or two methyl or ethyl substituents at the C-16 position are disclosed. These prostaglandin-type compounds are useful for the same pharmacological purposes as the corresponding prostaglandins.