期刊
ORGANIC LETTERS
卷 13, 期 21, 页码 5724-5727出版社
AMER CHEMICAL SOC
DOI: 10.1021/ol202053m
关键词
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资金
- A*STAR, Singapore
Total synthesis of echinopine A and B have been accomplished, based on a strategy that involved two transition-metal-mediated ene-yne cycloisomerizations. A modified Pd-catalyzed enyne cycloisomerization/intramolecular Diels-Alder cascade rendered a more streamlined synthesis of tricyclic ketone 15, and a Ru-catalyzed ene-yne cycloisomerization/cyclopropanation resembled the late-stage [5/7] -> [3/5/5/7] ring-forming sequence In the proposed biosynthetic pathway.
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