Five triterpene glycosides have been isolated from the leaves of Acanthopanax giraldii Harms (Araliaceae), which are elucidated as: hederagenin 3 O α L rhamnopyranosyl ( 1→2 ) α L arabinopyranoside(Ⅰ),hederagenin ...Five triterpene glycosides have been isolated from the leaves of Acanthopanax giraldii Harms (Araliaceae), which are elucidated as: hederagenin 3 O α L rhamnopyranosyl ( 1→2 ) α L arabinopyranoside(Ⅰ),hederagenin 28 α L rhamnopyranosyl ( 1→4 ) β D glucopyranosyl ( 1→6 ) β D glucopyranosylester(Ⅱ),3 O α L arabinopyranosyl hederagenin 28 β D glucopyranosyl ( 1→6 ) β D glucopyranosylester(Ⅲ),3 O α L arabinopyranosyl hederagenin 28 α L rhamnopyranosyl ( 1→4 ) β D glucopyranosyl ( 1→6 ) β D glucopyranosylester(Ⅳ) and 3 O α L rhamnopyranosyl ( 1→2 ) α L arabinopyranosyl hederagenin 28 α L rhamnopyranosyl ( 1→4 ) β D glucopyranosyl ( 1→6 ) β D glucopyranosylester(Ⅴ).All of them are reported in this genus for the first time. Perhaps the findings are valuable for chemotaxonomy of Acanthopanax genus.展开更多
A new natural diterpene glycoside was isolated from Aster ageratoides Turcz.Its structure was elucidated by means of IR, MS (FAB, EI), NMR ( 1 H , 13 C , DEPT), 2D NMR ( 1 H 1 H COSY, 13 C 1 H COSY, J resolved, CoLoC)...A new natural diterpene glycoside was isolated from Aster ageratoides Turcz.Its structure was elucidated by means of IR, MS (FAB, EI), NMR ( 1 H , 13 C , DEPT), 2D NMR ( 1 H 1 H COSY, 13 C 1 H COSY, J resolved, CoLoC) spectra and chemical method as 16β,17 dihydroxy (-) kauran 19 oic acid β D glucopyanosyl ester.展开更多
Two furoeremophilanes (1) and (2) were isolated from Senecio kaschkarovii C.Winkl.growing in Zhang County of Gansu Province.Their structures were elucidated by UV, IR, MS, 1 H NMR and 13 C NMR spectral data as 1α ace...Two furoeremophilanes (1) and (2) were isolated from Senecio kaschkarovii C.Winkl.growing in Zhang County of Gansu Province.Their structures were elucidated by UV, IR, MS, 1 H NMR and 13 C NMR spectral data as 1α acetoxy 6β angeloyloxy 10β hydroxy 9 oxofuroeremophilane (1) and 1α methacryloyloxy 6β acetoxy 10β hydroxy 9 oxofuroeremophilane (2) respectively and were further established by 2D 1 H, 1 H NMR correlated spectrum, 1 H, 13 C NMR correlated spectrum and 1 H NOE difference spectrum.Compound 2 is a new furoeremophilane.展开更多
文摘Five triterpene glycosides have been isolated from the leaves of Acanthopanax giraldii Harms (Araliaceae), which are elucidated as: hederagenin 3 O α L rhamnopyranosyl ( 1→2 ) α L arabinopyranoside(Ⅰ),hederagenin 28 α L rhamnopyranosyl ( 1→4 ) β D glucopyranosyl ( 1→6 ) β D glucopyranosylester(Ⅱ),3 O α L arabinopyranosyl hederagenin 28 β D glucopyranosyl ( 1→6 ) β D glucopyranosylester(Ⅲ),3 O α L arabinopyranosyl hederagenin 28 α L rhamnopyranosyl ( 1→4 ) β D glucopyranosyl ( 1→6 ) β D glucopyranosylester(Ⅳ) and 3 O α L rhamnopyranosyl ( 1→2 ) α L arabinopyranosyl hederagenin 28 α L rhamnopyranosyl ( 1→4 ) β D glucopyranosyl ( 1→6 ) β D glucopyranosylester(Ⅴ).All of them are reported in this genus for the first time. Perhaps the findings are valuable for chemotaxonomy of Acanthopanax genus.
文摘A new natural diterpene glycoside was isolated from Aster ageratoides Turcz.Its structure was elucidated by means of IR, MS (FAB, EI), NMR ( 1 H , 13 C , DEPT), 2D NMR ( 1 H 1 H COSY, 13 C 1 H COSY, J resolved, CoLoC) spectra and chemical method as 16β,17 dihydroxy (-) kauran 19 oic acid β D glucopyanosyl ester.
文摘Two furoeremophilanes (1) and (2) were isolated from Senecio kaschkarovii C.Winkl.growing in Zhang County of Gansu Province.Their structures were elucidated by UV, IR, MS, 1 H NMR and 13 C NMR spectral data as 1α acetoxy 6β angeloyloxy 10β hydroxy 9 oxofuroeremophilane (1) and 1α methacryloyloxy 6β acetoxy 10β hydroxy 9 oxofuroeremophilane (2) respectively and were further established by 2D 1 H, 1 H NMR correlated spectrum, 1 H, 13 C NMR correlated spectrum and 1 H NOE difference spectrum.Compound 2 is a new furoeremophilane.
