Journal of Asian Natural Products Research 2015
Two new coumarin glycosides from Herpetospermum caudigerum.
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Phytochemical investigation on the seeds of Herpetospermum caudigerum afforded two new coumarin glycosides A and B (1 and 2), together with a known compound herpetolide A (3). Their structures were determined by spectroscopic methods, including 2D NMR techniques. Compound 3 exhibited cytotoxicity against HepG2 cells with IC50 value of 6.47 μg/ml. Compound 2 showed anti-hepatitis B virus activity with HBsAg secretion by 33.1% at 200 μg/ml.
