Scalable synthesis of cortistatin A and related structures.
Scalable synthesis of cortistatin A and related structures.
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DOI:
10.1021/ja202103e
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发表时间:
2011-05-25
影响因子:
15
通讯作者:
Baran, Phil S.
中科院分区:
文献类型:
--
作者:
Shi, Jun;Manolikakes, Georg;Yeh, Chien-Hung;Guerrero, Carlos A.;Shenvi, Ryan A.;Shigehisa, Hiroki;Baran, Phil S.
Full details are provided for an improved synthesis of cortistatin A and related structures as well as the underlying logic and evolution of strategy. The highly functionalized cortistatin A-ring embedded with a key heteroadamantane was synthesized by a simple and scalable 5-step sequence. A chemoselective, tandem geminal dihalogenation of an unactivated methyl group, a reductive fragmentation/trapping/elimination of a bromocyclopropane, and a facile chemoselective etherification reaction afforded the cortistatin A core, dubbed “cortistatinone”. A selective Δ16-alkene reduction with Raney Ni provided cortistatin A. With this scalable and practical route, copious quantities of cortistatinone, Δ16-cortistatin A-the equipotent direct precursor to cortistatin A, and its related analogs were prepared for further biological studies.
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