期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 21, 期 36, 页码 12596-12600出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201502423
关键词
[3+2] cycloaddition; natural products; Pauson-Khand reaction; quaternary stereocenters; retigeranic acids
资金
- NSF of China [21372016, 21402002]
- 863 Program [2013AA092903]
- 973 Program [2012CB722602]
- NSFC-Shandong Joint Fund for Marine Science Research Center [U1406402]
- Shenzhen Basic Research Program [JCYJ20130329180217059, ZDSYS20140509094114168]
A concise and efficient approach for the construction of the tetracyclic carbon skeleton of retigeranic acid A is described. The key transformations include a novel Rh-catalyzed [3+2] cycloaddition of enyol to afford cyclopentanoid E, bearing two contiguous quaternary stereocenters at the bridgehead positions, and an intramolecular Pauson-Khand reaction to construct the advanced tetracyclic core structure of retigeranic acid A.
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