期刊
TETRAHEDRON
卷 71, 期 22, 页码 3699-3704出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2014.09.029
关键词
Indole alkaloids; (-)-Chaetominine; Total synthesis; Copper-catalyzed; Cyclization
资金
- National Natural Science Foundation of China [21272242, 21302193]
- Yunnan High-End Technology Professionals Introduction Program [2010CI117]
- West Doctor Foundation of Chinese Academy of Sciences [292014312D11016]
- National Basic Research Program of China [2011CB915500]
Synthetic endeavors toward (-)-chaetominine via copper-catalyzed radical cyclization are reported. Both of the pyrido[2,3,b]-indole ring (C ring) and imidazolidinone (D ring) are efficiently constructed in one-pot manner. It's unveiled that the newly formed stereo center is controlled by the chiral of alanine, not by tryptophan. With these synthetic discoveries, highly efficient and diastereoselective synthesis of (+)-2,3,14-epi-chaetominine 5 and (-)-11-epi-chaetominine 11 is achieved. (C) 2014 Elsevier Ltd. All rights reserved.
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