IX, Natural Products from Vietnamese Plants. 20-Epi-kibataline, a New Steroidal Alkaloid fromParavallaris macrophylla

Abstract
The major constituent of the alkaloid fraction of leaves of Paravallaris macrophylla Pierre was found to be the new paravallarine-type steroidal alkaloid, 20-epi-kibataline. The molecular and crystal structure of this steroidal alkaloid were determined by X-ray analysis.

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