Aristolactam-type alkaloids and aristolochic acids from Aristolochia moupinensis and Aristolochia cathcartii

Phytochemical investigation on Aristolochia moupinensis and Aristolochia cathcartii resulted in the isolation of twelve aristolactam-type alkaloids and six aristolochic acid derivatives. Their structures were identified as aristololactam BII, 7-methoxyl-aristololactam IV, aristololactam IV, aristolactam I, aristolactam AII, aristolactam IIIa, aristolactam-N-β-D-glucoside, aristolactam C-N-β-D-glucoside, aristolochic acid I methyl ester, aristolochic acid A, aristolochic acid VI, aristolochic acid BII, aristolochic acid C, aristolactam III, aristolactam II, aristolactam A III, aristolactam A IIIa, aristolochic acid D II by comparison of their spectral data with those reported previously in the literature. Chemotaxonomic significance of this investigation was summarized.