Fei Wang ^a,b, Fu-Cai Ren ^b, Ji-Kai Liu ^a,*

^b BioBioPha Co. Ltd., 132 Lanhei Road, Kunming 650204, China

Abstract

2,3-Secofernane triterpenoids, alstonic acids A (1) and B (2), were isolated from the leaves of Alstonia scholaris together with an indole alkaloid, N1-methoxymethyl picrinine (3). Their structures were established from MS and NMR spectroscopic analyses and confirmed by single crystal X-ray diffraction analysis.

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