Synthesis of (+)-cortistatin A.
Synthesis of (+)-cortistatin A.
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DOI:
10.1021/ja8023466
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发表时间:
2008-06-11
影响因子:
15
通讯作者:
Baran PS
中科院分区:
文献类型:
--
作者:
Shenvi RA;Guerrero CA;Shi J;Li CC;Baran PS
Cortistatin A is a marine steroid with highly selective and perhaps mechanistically unique antiangiogenic activity. Herein we report a synthesis of this natural product by way of “cortistatinone”, an intermediate ideally suited for investigating the key pharmacophore of the cortistatin family. The synthesis begins with a terrestrial steroid and traverses a route to cortistatin A through the discovery of unique chemical reactivity. Specifically, we demonstrate the first example of a directed, geminal C−H bisoxidation, a new fragmentation cascade to access expanded B-ring steroid systems, a chemoselective cyclization to install the hallmark oxabicycle of the cortistatin family, and a remarkably selective hydrogenation reaction, which should find extensive use in future syntheses of the cortistatins and designed analogues. The synthesis displays a level of brevity, efficiency, and practicality that will be crucial in evaluating the medicinal potential of this fascinating class of marine steroids.
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影响因子:
1.8
作者:
González, CC;León, EI;Suárez, E
通讯作者:
Suárez, E
影响因子:
3.5
作者:
Aoki, Shunji;Watanabe, Yasuo;Kobayashi, Motomasa
通讯作者:
Kobayashi, Motomasa
影响因子:
15
作者:
KUPCHAN, SM;ABUSHANAB, E;BY, AW
通讯作者:
BY, AW
影响因子:
2.1
作者:
NEEF, G;ECKLE, E;MULLERFAHRNOW, A
通讯作者:
MULLERFAHRNOW, A
影响因子:
15
作者:
Aoki, S;Watanabe, Y;Kobayashi, M
通讯作者:
Kobayashi, M