Synthesis of the Potent Antiglaucoma Agent, Travoprost

Autor: Raymond Mccague, Mark Jackson, Ian C. Lennon, Graham Ruecroft, Nicholas Parkin, Lee T. Boulton, Dean Brick, Martin E. Fox, Darren Rhodes
Rok vydání: 2002
Předmět:
Zdroj: Organic Process Research & Development. 6:138-145
ISSN: 1520-586X
1083-6160
DOI: 10.1021/op010097p
Popis: A commercial synthesis of the antiglaucoma agent, travoprost 2, is described. A total of 22 synthetic steps are required to provide the single enantiomer prostanoid, with the longest linear sequence being 16 steps from 3-hydroxybenzotrifluoride. The route is based upon a cuprate-mediated coupling of the single enantiomer vinyl iodide 13 and the tricyclic ketone 5, of high stereochemical purity, to yield the single isomer bicyclic ketone 15. A Baeyer−Villiger oxidation provides the lactone 16 as a crystalline solid, thus limiting the need for chromatographic purification. DIBAL-H reduction, Wittig reaction, esterification, and silyl group deprotection complete the synthesis of travoprost.
Databáze: OpenAIRE