Prostaglandins. Part 4. Synthesis of (±)-11-deoxyprostaglandins from 2-(ω-hydroxyheptyl)cyclopent-2-enones
Abstract
Conjugate nitrile addition to 2-(7-hydroxyheptyl)cyclopent-2-enone (IIIa) and subsequent elaboration via the aldehydes [(VIa), (Xa)] affords a convenient direct route to (±)-11-deoxyprostaglandins of the E1 and F1 series. Syntheses of (±)-10-methyl- and (±)-α-nor-11-deoxyprostaglandins are also described.