Twenty-one lignans including three new ones(1, 2 and 13) were isolated from Justicia procumbens. The chemical structures of the new lignans were determined by spectroscopic means including 1 D and 2 D NMR analysis. Th...Twenty-one lignans including three new ones(1, 2 and 13) were isolated from Justicia procumbens. The chemical structures of the new lignans were determined by spectroscopic means including 1 D and 2 D NMR analysis. These compounds were evaluated for their cytotoxic and anti-HIV activities. The new secoisolariciresinol dimethyl ether acetate(13) exhibited anti-HIV-1 activity with an IC50 value of 5.27 μmol·L^-1 and a selective index(SI) value of 2.2. The known arylnaphthalene lignan procumbenoside A(3) and diphyllin(8) demonstrated inhibitory activity against HIV-1 with IC50 values of 4.95(SI > 6.2) and 0.38 μmol·L^-1(SI = 5.3), respectively.展开更多
基金supported by the Research Grants Council of the Hong Kong Special Administrative Region,China(Nos.HKBU12103618 and HKBU12103917)the Research Grants Council of the Hong Kong Baptist University(HKBU)+2 种基金Interdisciplinary Research Matching Scheme(No.RC-IRMS/15-16/02)the Hong Kong Scholars Program Foundation(No.XJ2015047)Mr.Kwok Yat Wai and Madam Kwok Chung Bo Fun Graduate School Development Fund(WANG Dong-Ying)
文摘Twenty-one lignans including three new ones(1, 2 and 13) were isolated from Justicia procumbens. The chemical structures of the new lignans were determined by spectroscopic means including 1 D and 2 D NMR analysis. These compounds were evaluated for their cytotoxic and anti-HIV activities. The new secoisolariciresinol dimethyl ether acetate(13) exhibited anti-HIV-1 activity with an IC50 value of 5.27 μmol·L^-1 and a selective index(SI) value of 2.2. The known arylnaphthalene lignan procumbenoside A(3) and diphyllin(8) demonstrated inhibitory activity against HIV-1 with IC50 values of 4.95(SI > 6.2) and 0.38 μmol·L^-1(SI = 5.3), respectively.
