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 |
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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 |
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