Highly Stereoselective Formal Synthesis of Rosuvastatin and Pitavastatin Through Julia–Kocienski Olefination Using the Lactonized Statin Side-Chain Precursor

Autor: Jan Fabris, Zdenko Časar, Ivana Gazic Smilovic, Martin Črnugelj
Rok vydání: 2014
Předmět:
Zdroj: Synthesis. 46:2333-2346
ISSN: 1437-210X
0039-7881
DOI: 10.1055/s-0033-1338648
Popis: An expedient and simple synthetic approach to pitava­statin and rosuvastatin final intermediates is described. The presented approach consists of completely stereoselective Julia–Kocienski olefination step (E/Z up to 300:1) between lactonized statin side-chain precursor and sulfone derivative of the corresponding pyrimidine and quinoline heterocyclic cores. The desired O-TBS protected statin lactones were isolated in 66–71% yield and high >97% purity (HPLC).
Databáze: OpenAIRE