A new flavonol glycoside, 3＇-（4＇＂-（3＇＂＇,4＇＂＇-dihydroxyphenoxy）-2＇＂-hydroxyphenoxy）acanthophorin B （la） to- gether with 3＇-（2＇＂,4＂＇-dihydroxyphenoxy）acanthophorin B （1）, acanthophorin B （2）,...A new flavonol glycoside, 3＇-（4＇＂-（3＇＂＇,4＇＂＇-dihydroxyphenoxy）-2＇＂-hydroxyphenoxy）acanthophorin B （la） to- gether with 3＇-（2＇＂,4＂＇-dihydroxyphenoxy）acanthophorin B （1）, acanthophorin B （2）, vismiaquinone （3）, rheochrysidin （3a）, lupeol acetate and fatty acid were isolated from the chloroform extract of the stem bark of Psorospermum androsaemifolium Baker （Clusiaceae）. The structure of la was determined on the basis of detailed spectroscopic analysis and comparison with the literature. Compounds la and 3a showed moderate antimicrobial activity.展开更多
文摘A new flavonol glycoside, 3＇-（4＇＂-（3＇＂＇,4＇＂＇-dihydroxyphenoxy）-2＇＂-hydroxyphenoxy）acanthophorin B （la） to- gether with 3＇-（2＇＂,4＂＇-dihydroxyphenoxy）acanthophorin B （1）, acanthophorin B （2）, vismiaquinone （3）, rheochrysidin （3a）, lupeol acetate and fatty acid were isolated from the chloroform extract of the stem bark of Psorospermum androsaemifolium Baker （Clusiaceae）. The structure of la was determined on the basis of detailed spectroscopic analysis and comparison with the literature. Compounds la and 3a showed moderate antimicrobial activity.
