J Integr Plant Biol. ›› 1990, Vol. 32 ›› Issue (5): -.

• Research Articles •    

The Alkaloids of Stephania officinarum Lo et Yang

Fang Sheng-ding,Chen Yan,Zhang Rui,Lu Yuan-jun and Yang He-ming   

Abstract: Eight alkaloids have been isolated from the roots of Stephanie officinarurn Lo et Yang, which is a novel species growing in Gengma district of Yunnan province. The structures of these compounds were identified as isocorydine (Ⅰ), 1-tetrahydropalmatine (Ⅱ), sinoacutine (Ⅲ), crebanine (Ⅳ), isoboldine (Ⅴ), corytuberine (Ⅵ), palmatine (Ⅶ) and l-N-β-methyltetrahydropalmatine nitrate (Ⅷ) by spectral and chemical methods. One of them, compound Ⅷ is a new natural quaternary alkaloid. It is the first time that we find compound Ⅷ occurring in nitrate form in the plant. Isocorydine is a main alkaloid with 1.24% yield.

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