Four new neo-lignans were isolated from the chloroform portion of 70% ethanol extract of the seed crusts of Trewia nudiflora L., and were determined to be 9'-methoxy-7'-en-3',8:4',7-di-epoxyneolignan-3...Four new neo-lignans were isolated from the chloroform portion of 70% ethanol extract of the seed crusts of Trewia nudiflora L., and were determined to be 9'-methoxy-7'-en-3',8:4',7-di-epoxyneolignan-3,4,9-triol l, 9'-methoxy-7'-en-3',7:4',8-diepoxyneolignan-3,4,9-triol 2, 9'- ethoxy-7'-en-3',8:4',7-diepoxyneolignan-3,4,9-triol 3, 9'-butoxy-7'-en-3',8:4',7-diepoxy-neolignan -3,4,9-triol 4, respectively, on the basis of spectral data. The antimicrobial bioassays showed that 4 had evident inhibitory activity against Mycobacterium tuberculosis.展开更多
文摘Four new neo-lignans were isolated from the chloroform portion of 70% ethanol extract of the seed crusts of Trewia nudiflora L., and were determined to be 9'-methoxy-7'-en-3',8:4',7-di-epoxyneolignan-3,4,9-triol l, 9'-methoxy-7'-en-3',7:4',8-diepoxyneolignan-3,4,9-triol 2, 9'- ethoxy-7'-en-3',8:4',7-diepoxyneolignan-3,4,9-triol 3, 9'-butoxy-7'-en-3',8:4',7-diepoxy-neolignan -3,4,9-triol 4, respectively, on the basis of spectral data. The antimicrobial bioassays showed that 4 had evident inhibitory activity against Mycobacterium tuberculosis.
基金the National Sci-ence Fund for Distinguished Young Scholars to Y.-M. Shen(30325044)the National Natural Science Foundation of China(30070007,30430020).