Two new compounds 7-hydroxy-5-O-（β-D-glucopyranoside） flavan （1） and （Z）-4＇,6＇-dihydroxy-2＇-O-（β-D-glucopyranoside） chalcone （2）, along with eight known compounds, were isolated from the stem bark of Dr...Two new compounds 7-hydroxy-5-O-（β-D-glucopyranoside） flavan （1） and （Z）-4＇,6＇-dihydroxy-2＇-O-（β-D-glucopyranoside） chalcone （2）, along with eight known compounds, were isolated from the stem bark of Drypetes parvifolia （Euphorbiaceae）. Their structures were established on the basis of spectroscopic analysis and chemical evidence.展开更多
A new flavone glycoside, 5,8-dihydroxy-4',6,7-trimethoxyflavone 8-O-(-D-glucopyranoside 1, together with three known flavonoids, pedalitin 2, cirsimartin 3 and genkwanin 4, were isolated from the aerial parts of I...A new flavone glycoside, 5,8-dihydroxy-4',6,7-trimethoxyflavone 8-O-(-D-glucopyranoside 1, together with three known flavonoids, pedalitin 2, cirsimartin 3 and genkwanin 4, were isolated from the aerial parts of Isodon enanderianus. Their structures were determined on the basis of spectral data.展开更多
A new flavonoid glycoside, 5, 7-dihydroxy-4'-methoxyflavonoid 7-Q-[6-O-(4-O-acetyl-alpha-L-rhamnosyl)-3-O-beta-D-glucosyl]-6-O-acetyl-beta-D-glucoside was isolated from Thalictrum przewalskii. Its structure was de...A new flavonoid glycoside, 5, 7-dihydroxy-4'-methoxyflavonoid 7-Q-[6-O-(4-O-acetyl-alpha-L-rhamnosyl)-3-O-beta-D-glucosyl]-6-O-acetyl-beta-D-glucoside was isolated from Thalictrum przewalskii. Its structure was determined on basis of spectroscopic evidences.展开更多
A new benzophenone glycoside,2,6-dihydroxy-4-O-β-D-glucopyranosylbenzophenone（1）,was isolated from the leaves of guajava L.Its structure was elucidated by spectral and chemical methods.1 showed significant activiti...A new benzophenone glycoside,2,6-dihydroxy-4-O-β-D-glucopyranosylbenzophenone（1）,was isolated from the leaves of guajava L.Its structure was elucidated by spectral and chemical methods.1 showed significant activities to secretion of NO in mouse peritoneal macrophages in 10μmol/L.展开更多
基金One of the authors(J.Wandji)is grateful for grant(No.F/2624-3F)from the International Foundation for Science(Sweden)the sponsorship of the"UniversitéParis Descartes,France"during his multiple research visits in Paris.
文摘Two new compounds 7-hydroxy-5-O-（β-D-glucopyranoside） flavan （1） and （Z）-4＇,6＇-dihydroxy-2＇-O-（β-D-glucopyranoside） chalcone （2）, along with eight known compounds, were isolated from the stem bark of Drypetes parvifolia （Euphorbiaceae）. Their structures were established on the basis of spectroscopic analysis and chemical evidence.
文摘A new flavone glycoside, 5,8-dihydroxy-4',6,7-trimethoxyflavone 8-O-(-D-glucopyranoside 1, together with three known flavonoids, pedalitin 2, cirsimartin 3 and genkwanin 4, were isolated from the aerial parts of Isodon enanderianus. Their structures were determined on the basis of spectral data.
文摘A new flavonoid glycoside, 5, 7-dihydroxy-4'-methoxyflavonoid 7-Q-[6-O-(4-O-acetyl-alpha-L-rhamnosyl)-3-O-beta-D-glucosyl]-6-O-acetyl-beta-D-glucoside was isolated from Thalictrum przewalskii. Its structure was determined on basis of spectroscopic evidences.
基金National Science and Technology Project of China(No.2009ZX09311-004) for financial support
文摘A new benzophenone glycoside,2,6-dihydroxy-4-O-β-D-glucopyranosylbenzophenone（1）,was isolated from the leaves of guajava L.Its structure was elucidated by spectral and chemical methods.1 showed significant activities to secretion of NO in mouse peritoneal macrophages in 10μmol/L.
