【摘要】 目的　对银杏 (GinkgobilobaL .)叶的化学成分进行分离、鉴定。 方法　采用各种色谱技术进行分离 ,用IR ,UV ,MS ,1HNMR ,13 CNMR和 2DNMR光谱技术确定化合物的结构。结果　分得 8个黄酮醇苷类成分 :槲皮素 3 O β D 葡糖苷 (1) ,山奈酚 3 O β D 葡糖苷 (2 ) ,芦丁 (3) ,山奈酚 3 O β D 芸香糖苷 (4) ,异鼠李素 3 O β D 芸香糖苷 (5 ) ,槲皮素 3 O β D 葡萄糖基 (1 2 ) α L 鼠李糖苷 (6 ) ,山奈酚 3 O β D 葡萄糖基 (1 2 ) α L 鼠李糖苷 (7) ,异鼠李素 3 O β D 葡萄糖基 (1 2 ) α L 鼠李糖苷 (8)。 结论　化合物 8为新化合物。更多还原

【Abstract】 AIM Isolation and structural elucidation of the constituents from leaves of Ginkgo biloba . METHODS To isolate chemical constituents, solvent extraction together with column chromatography was used. IR, UV, MS and NMR spectra were employed for structural identification. RESULTS Eight flavonol glycosides were isolated. They were elucidated as quercetin 3 O β D glucoside(1), kaempferol 3 O β D glucoside(2), rutin(3), kaempferol 3 O β D rutinoside(4), isorhamnetin 3 O β D rutinoside(5), quercetin 3 O β D glucosyl(1 2) α L rhamnoside(6), kaempferol 3 O β D glucosyl(1 2) α L rhamnoside(7) and isorhamnetin 3 O β D glucosyl(1 2) α L rhamnoside(8). CONCLUSION Compound 8 was shown to be a new compound.更多还原