| 摘要 |
<p>Process for preparing bicyclic lactone ketones of the formula wherein R12 is (1) (2) or (3) wherein CgH2g, R2, R3, s, T, and Z are as defined hereinafter, by way of a cyanohydrin; and the intermediates prepared thereby. The ketones are useful intermediates in preparing prostaglandins and prostaglandin analogs having pharmacological utility. This divisional application is particularly directed to optically active bicyclic lactone cyanohydrin monoformates of the formula wherein L1 is or .</p> |
