Development of a scaleable process for the synthesis of a next-generation statin

Lindsay A. Hobson, Otute Akiti, Subodh S. Deshmukh, Shannon Harper, Kishta Katipally, Chiajen J. Lai, Robert C. Livingston, Ehrlic Lo, Michael M. Miller, Srividya Ramakrishnan, Lifen Shen, Jan Spink, Srinivas Tummala, Chenkou Wei, Kana Yamamoto, John Young, Rodney L. Parsons

研究成果: Article査読

21 被引用数 (Scopus)


This manuscript details the process research and development of a convergent and safe approach to 1 on a multikilo scale. Specific highlights of the process development efforts will be described, including the development of a dehydrogenation method for dihydropyrimidines and a thermochemically safe synthesis of a 1,2,4-aminotriazole fragment. A key feature of the synthesis is the use and optimization of a modified Julia-Kocienski olefination reaction. Specifically, we report an unprecedented dependence of the product olefin geometry on reaction temperature, where an E:Z ratio as high as 200:1 can be obtained. Initial insights into the mechanistic rationale for this observation are also provided. Finally, a purity upgrade sequence via an intermediate crystalline form is highlighted as a method of controlling the final API quality.

ジャーナルOrganic Process Research and Development
出版ステータスPublished - 2010 3月 19

ASJC Scopus subject areas

  • 物理化学および理論化学
  • 有機化学


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