Synthesis and anti-H5N1 activity of chiral gossypol derivatives and its analogs implicated by a viral entry blocking mechanism |
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Authors: | Jian Yang Gang Chen Long Long Li Wei Pan Fang Zhang Jingxiang Yang Shuwen Wu Po Tien |
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Institution: | 1. Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan 430060, China;2. The College of Life Sciences, State Key Laboratory of Virology, Modern Virology Research Center, Wuhan University, Wuhan 430072, China;3. Wuhan University School of Pharmaceutical Sciences, Wuhan 430071, China |
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Abstract: | A series of chiral gossypol derivatives and its analogs were synthesized and tested in vitro for their anti-H5N1 activity. Interestingly, (+)-gossypol derivatives and its analogs were more active against H5N1 than the corresponding (?)-gossypol derivatives and its analogs. Through a simple chemical modification with amino acids, less active chiral gossypol could be converted into more active derivatives, and most of chiral gossypol derivatives were more potent against H5N1 than 1-adamantylamine. With regard to the mechanism of action, chiral gossypol derivatives and its analogs might impair the virus entry step of cell infection, likely targeting to HA2 protein. |
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Keywords: | Chiral gossypol Analog Amino acid derivative Avian influenza virus Blocking viral entry |
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