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  • Title: Paxdaphnidines A and B, novel penta- and tetracyclic alkaloids from Daphniphyllum paxianum.
    Author: Zhan ZJ, Yang SP, Yue JM.
    Journal: J Org Chem; 2004 Mar 05; 69(5):1726-9. PubMed ID: 14987035.
    Abstract:
    Two novel alkaloids, paxdaphnidine A (1) with a unique pentacyclic skeleton and paxdaphnidine B (2) with an uncommon tetracyclic skeleton, were isolated from the stems and leaves of Daphniphyllum paxianum. Their structures were established by spectral methods, especially two-dimensional NMR techniques ((1)H-(1)H COSY, HSQC, HMBC, and NOESY).
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