Four new coumarinolignoids from seeds of Solanum indicum

Activity-guided fractionation of seeds of Solanum indicum for anti-HBV activity led to the isolation of two novel coumarinolignoid alkaloids (indicumines A-B, 1-2) and two new coumarinolignoids (indicumines C-D, 3-4), together with four known coumarins (5-8). Their structures were established on the basis of spectroscopic data. The two novel coumarinolignoid alkaloids shows anti-HBV activities through specifically inhibiting the secretion of HBsAg in HepG2.2.15.

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