| Literature DB >> 22537293 |
Ming Bian1, Zhen Wang, Xiaochun Xiong, Yu Sun, Carlo Matera, K C Nicolaou, Ang Li.
Abstract
A divergent strategy for the total syntheses of the indole terpenoid anominine (1) and its natural congener tubingensin A (2) has been developed. The common intermediate 11 bearing all of the required stereogenic centers for both natural products was first assembled by employing a Ueno-Stork radical cyclization and a Sc(OTf)(3)-mediated Mukaiyama aldol reaction to form the key C-C bonds in a stereocontrolled manner. The route to anominine features a radical deoxygenation followed by an efficient side-chain installation, while the path to tubingensin A exploits a CuOTf-promoted 6π-electrocyclization/aromatization sequence to forge the central region of the pentacyclic scaffold.Entities:
Mesh:
Substances:
Year: 2012 PMID: 22537293 DOI: 10.1021/ja302765m
Source DB: PubMed Journal: J Am Chem Soc ISSN: 0002-7863 Impact factor: 15.419