Chemical constituents of the stems of Canthium simile were studied.Seven compounds were isolated from ethyl acetate extract of the stem,and their structures were elucidated by various spectroscopic methods.They were i...Chemical constituents of the stems of Canthium simile were studied.Seven compounds were isolated from ethyl acetate extract of the stem,and their structures were elucidated by various spectroscopic methods.They were identified as syringic acid(Ⅰ),isovanillic acid(Ⅱ),Caruilignan D(Ⅲ),(3β)-28-Norlup-20(29)-ene-3,17-diol(Ⅳ),3,4-dimethoxy-2,4-hexadienedioic acid(Ⅴ),dibutyl phthalate(Ⅵ) and diisobutyl phthalate(Ⅶ).The seven compounds were isolated from this genus for the first time.展开更多
The chemical constituents of essential oil from leaves of Leea longifolia Merr.were analyzed by the capillary GC-MS method.In the essential oil,28 compounds were identified,which accounted for 99.99 % of total content...The chemical constituents of essential oil from leaves of Leea longifolia Merr.were analyzed by the capillary GC-MS method.In the essential oil,28 compounds were identified,which accounted for 99.99 % of total content of the essential oil.The main chemical constituents were phenol(15.72 %),n-hexadecanoic acid(11.25 %),phenylethyl alcohol(8.25 %),octadec-9-enoic acid(7.96 %),2,3-dihydro-benzofuran(6.20 %),pentatriacontane(5.90 %),etc.展开更多
The essential oil of a liverworts plant from the Dragon-Snow Mountain in Yunnan province was analyzed via GC/MS.Sixty-three components were identified and nine among them were terpenes(that is dihydroactindiolide,2,2...The essential oil of a liverworts plant from the Dragon-Snow Mountain in Yunnan province was analyzed via GC/MS.Sixty-three components were identified and nine among them were terpenes(that is dihydroactindiolide,2,2′,5′-trimethylacrylophenone,pinane,6,10,14-trimethyl-2-pentadecanone,manool,4,4-dimethyl-androsta-5,7-diene,4,8,12,16-tetramethylheptadecan-4-olide,ethyl cholate and friedelin,respectively),six among them were aromatics(that is benzoic acid,2,6-di-tert-butyl-4-methylphenol,ethyl 2-hydroxyl-4-methoxy-6-methyl benzoate,methyl 2-hydroxyl-4-methoxy benzoate,methyl 2,4-dihydroxy-3,6-dimethyl b enzoate and diisobutyl phthalate,respectively),the others were fatty hydrocarbons or fatty acids or fatty acid esters.展开更多
文摘Chemical constituents of the stems of Canthium simile were studied.Seven compounds were isolated from ethyl acetate extract of the stem,and their structures were elucidated by various spectroscopic methods.They were identified as syringic acid(Ⅰ),isovanillic acid(Ⅱ),Caruilignan D(Ⅲ),(3β)-28-Norlup-20(29)-ene-3,17-diol(Ⅳ),3,4-dimethoxy-2,4-hexadienedioic acid(Ⅴ),dibutyl phthalate(Ⅵ) and diisobutyl phthalate(Ⅶ).The seven compounds were isolated from this genus for the first time.
文摘The chemical constituents of essential oil from leaves of Leea longifolia Merr.were analyzed by the capillary GC-MS method.In the essential oil,28 compounds were identified,which accounted for 99.99 % of total content of the essential oil.The main chemical constituents were phenol(15.72 %),n-hexadecanoic acid(11.25 %),phenylethyl alcohol(8.25 %),octadec-9-enoic acid(7.96 %),2,3-dihydro-benzofuran(6.20 %),pentatriacontane(5.90 %),etc.
文摘The essential oil of a liverworts plant from the Dragon-Snow Mountain in Yunnan province was analyzed via GC/MS.Sixty-three components were identified and nine among them were terpenes(that is dihydroactindiolide,2,2′,5′-trimethylacrylophenone,pinane,6,10,14-trimethyl-2-pentadecanone,manool,4,4-dimethyl-androsta-5,7-diene,4,8,12,16-tetramethylheptadecan-4-olide,ethyl cholate and friedelin,respectively),six among them were aromatics(that is benzoic acid,2,6-di-tert-butyl-4-methylphenol,ethyl 2-hydroxyl-4-methoxy-6-methyl benzoate,methyl 2-hydroxyl-4-methoxy benzoate,methyl 2,4-dihydroxy-3,6-dimethyl b enzoate and diisobutyl phthalate,respectively),the others were fatty hydrocarbons or fatty acids or fatty acid esters.
