J Integr Plant Biol. ›› 1999, Vol. 41 ›› Issue (10): -.

• Research Articles •    

Uvarilactam, a New Lactam from Uvaria microcarpa (Annonaceae)

YU Dong-Lei, GUO Jian, LIAO Yong-Hong, XU Li-Zhen and YANG Shi-Lin   

Abstract: Five phenanthrene-l-carboxylic acid lactams: uvarilactam (1), aristololactam A Ⅱ (2), aristololactam B Ⅰ(3), aristololactam B Ⅱ (4), aristololactam A Ⅰ a (5), and two aporphine alkaloids, 4,5 dioxodehydroasimilobine (6) and oxoanolobin (7) have been isolated from the stems of Uvaria microcarpa Champ. ex Benth. Among them, 1 is a new compound and the others are isolated from this genus for the first time. Compound 3 and 4 are isolated as a mixture. Their structures were identified from interpretation of the 1H-NMR and NOESY spectral data.

Key words: Uvaria microcarpa, Annonaceae, uvarilactam, aistololactams, aporphine alkaloids

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