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Abstract: A series of alisol A derivatives were synthesized and evaluated for their anti-hepatitis B virus (HBV) activities and cytotoxicities in vitro. The preliminary investigation demonstrates that simple modifications of the parent structure of alisol A can produce a number of potentially important derivatives against HBV. The most active anti-HBV compound 6a showed high activities against the secretion of HBV surface antigen (IC50 =0.024mM), HBV e antigen (IC50 =0.028mM) and remarkable selective indices (SIHBsAg >108, SIHBeAg >93), which was selected for further evaluation as a novel HBV inhibitor. [Copyright &y& Elsevier]

Abstract: A series of 4-aryl-6-chloro-quinolin-2-ones and 5-aryl-7-chloro-1,4-benzodiazepine were synthesized and assayed for their in vitro anti-hepatitis B virus activities and cytotoxicities for the first time. Some of the tested compounds were active against HBsAg and HBeAg secretion in Hep G2.2.15 cells. Compound 5c showed IC50 of 0.074 and 0.449mM on HBsAg and HBeAg secretions, respectively, which were 10 times higher than that of its analog 4c and led to better selective index (SI) values (SI=23.2 and 3.4, respectively). [Copyright &y& Elsevier]