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First Diamino Daphniphyllum Alkaloid, Daphnipaxinin, with an Unprecedented Heterohexacyclic Skeleton from Daphniphyllum paxianum

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journal contribution
posted on 29.04.2004, 00:00 by Sheng-Ping Yang, Jian-Min Yue
The first diamino Daphniphyllum alkaloid, daphnipaxinin (1), with an unprecedented hexacyclic fused skeleton, along with a known alkaloid, daphnicyclidin A (2), was isolated from the stem of Daphniphyllum paxianum Rosenth. The structure and absolute stereochemistry of 1 were established by spectral methods, especially two-dimensional NMR techniques and CD analysis.