A new triterpenoid,possessing a lanost-9（11）-3-one skeleton,was isolated from the roots of Kadsura coccinea,based on the spectral analysis,its structure was elucidated as 3-hydroxy-12-acetoxycoccinic acid.
Two new diterpenoids, named glaucocalyxin F and glaucocalyxin X, respectively, were isolated from the whole plant of Rabdosia japonica （Burm. f.） Hara var. glaucocalyx （Maxim.） Hara. Their structures was establish...Two new diterpenoids, named glaucocalyxin F and glaucocalyxin X, respectively, were isolated from the whole plant of Rabdosia japonica （Burm. f.） Hara var. glaucocalyx （Maxim.） Hara. Their structures was established on the basis of spectral analysis.展开更多
2,3,5,4'-tetrahydroxystilbene-2-O-(2'-O-feruloyl)-beta -D-glucopyranoside, 2,3,5,4'-tetra hydroxystilbene-2-O-(2'-O-p-coumaroyl)-beta -D-glucopyranoside were isolated from Radix Polygoni multiflori Pre...2,3,5,4'-tetrahydroxystilbene-2-O-(2'-O-feruloyl)-beta -D-glucopyranoside, 2,3,5,4'-tetra hydroxystilbene-2-O-(2'-O-p-coumaroyl)-beta -D-glucopyranoside were isolated from Radix Polygoni multiflori Preparata. Structures were elucidated by chemical and spectral evidences.展开更多
The new flavone, 5,4′-dihydroxy-6,7-methylenedioxy-3′-methoxyflavone, and one new isoflavone glycoside, 3′,5′-dimethoxy irisolone-4′-O-β-d-glucoside were isolated from the rhizomes of Belamcanda chinensis. Their...The new flavone, 5,4′-dihydroxy-6,7-methylenedioxy-3′-methoxyflavone, and one new isoflavone glycoside, 3′,5′-dimethoxy irisolone-4′-O-β-d-glucoside were isolated from the rhizomes of Belamcanda chinensis. Their structures were established based on the spectroscopic methods.展开更多
Six indole alkaloids were isolated from the stems of Ervatamia yunnanensis. Among them, 10-hydroxy-19, 20-dihydroisositsirikine （I） is new. The other five are known alkaloids, namely： matrine （Ⅱ）, 19, 20-dihydro...Six indole alkaloids were isolated from the stems of Ervatamia yunnanensis. Among them, 10-hydroxy-19, 20-dihydroisositsirikine （I） is new. The other five are known alkaloids, namely： matrine （Ⅱ）, 19, 20-dihydroisositsirikine （Ⅲ）, 19-s-voacangarine （Ⅳ）, 1 l＇-methoxyl-19s- heyneanine （Ⅴ）, conodurine （Ⅵ）. The structural elucidation of the alkaloids was based on spectral means.展开更多
A new compound was isolated from Bletilla striata. Its structure was elucidated as 5-hydroxy-4-(p-hydroxybenzyl)-3, 3-dimethoxybibenzyl by spectroscopic method.
Three compounds were isolated from the roots of Cocculus trilobus DC. Their Ghemical structures were elucidated as β-sitosterol (V). 1.2-dehydroapateline (Ⅵ) and neotrilobine (Ⅶ) by spectral analysis.
文摘A new triterpenoid,possessing a lanost-9（11）-3-one skeleton,was isolated from the roots of Kadsura coccinea,based on the spectral analysis,its structure was elucidated as 3-hydroxy-12-acetoxycoccinic acid.
基金Shanghai Leading Academic Discipline Project (No.B906).
文摘Two new diterpenoids, named glaucocalyxin F and glaucocalyxin X, respectively, were isolated from the whole plant of Rabdosia japonica （Burm. f.） Hara var. glaucocalyx （Maxim.） Hara. Their structures was established on the basis of spectral analysis.
基金the National Natural Science Foundation of China (29872057), Science and Technology Foundation of Shanghai.
文摘2,3,5,4'-tetrahydroxystilbene-2-O-(2'-O-feruloyl)-beta -D-glucopyranoside, 2,3,5,4'-tetra hydroxystilbene-2-O-(2'-O-p-coumaroyl)-beta -D-glucopyranoside were isolated from Radix Polygoni multiflori Preparata. Structures were elucidated by chemical and spectral evidences.
文摘The new flavone, 5,4′-dihydroxy-6,7-methylenedioxy-3′-methoxyflavone, and one new isoflavone glycoside, 3′,5′-dimethoxy irisolone-4′-O-β-d-glucoside were isolated from the rhizomes of Belamcanda chinensis. Their structures were established based on the spectroscopic methods.
基金The authors acknowledge the financial support from the National Natural Science Foundation of China （No. 20272081）.
文摘Six indole alkaloids were isolated from the stems of Ervatamia yunnanensis. Among them, 10-hydroxy-19, 20-dihydroisositsirikine （I） is new. The other five are known alkaloids, namely： matrine （Ⅱ）, 19, 20-dihydroisositsirikine （Ⅲ）, 19-s-voacangarine （Ⅳ）, 1 l＇-methoxyl-19s- heyneanine （Ⅴ）, conodurine （Ⅵ）. The structural elucidation of the alkaloids was based on spectral means.
文摘A new compound was isolated from Bletilla striata. Its structure was elucidated as 5-hydroxy-4-(p-hydroxybenzyl)-3, 3-dimethoxybibenzyl by spectroscopic method.
文摘Three compounds were isolated from the roots of Cocculus trilobus DC. Their Ghemical structures were elucidated as β-sitosterol (V). 1.2-dehydroapateline (Ⅵ) and neotrilobine (Ⅶ) by spectral analysis.
