A new compound, desmosdumotin A (1), was isolated from the roots of Desmos dumosus (Roxb.) Saff. Its chemical structure was established as 5-hydroxy-7-methoxy-8-formyl-3-benzoyl-2,6-dimethyl-2R,3S-dihy-drochromone on ...A new compound, desmosdumotin A (1), was isolated from the roots of Desmos dumosus (Roxb.) Saff. Its chemical structure was established as 5-hydroxy-7-methoxy-8-formyl-3-benzoyl-2,6-dimethyl-2R,3S-dihy-drochromone on the basis of spectral methods, including ^1H-^1H COSY, ^1H-^13C COSY, and HMBC as well as single-crystal X-ray analysis.展开更多
Four neo-lignans: isoamericanin A(1), isoamericanol A(2), americanin B(3), artabotrycinol(4), a hemiterpenoid: (R)-artabotriol(5) and other compounds: palmitic acid(6), β-sitosterol(7) and daucosterol(8) were isolate...Four neo-lignans: isoamericanin A(1), isoamericanol A(2), americanin B(3), artabotrycinol(4), a hemiterpenoid: (R)-artabotriol(5) and other compounds: palmitic acid(6), β-sitosterol(7) and daucosterol(8) were isolated from the seeds of Artabostrys hexapetalus (L.f.) Bhadari (Annonaceae). Artabotrycinol(4) is a new neo-lignan and (R)-artabotriol(5) is a new hemiterpenoid. Their structures were established by IR, UV, MS, 1D and 2D NMR. Three other neo-lignans 1, 2, 3 were isolated from this plant for the first time.展开更多
A new flavanone was isolated from the roots of Desmos cochinchinensis Lour Its chemical structure was elucidated by spectral analysis as 7 hydroxy 5 methoxy 8 formyl 6 methylflavanone, named desmosflavanone Ⅱ
基金supported by National Natural Science Foundation of China (No. 30572213)Chinese PLA National Science Fund for Distinguished Young Scholars Grant during the 11th "Five-Year" Plan period (No. 06J001)~~
文摘A new compound, desmosdumotin A (1), was isolated from the roots of Desmos dumosus (Roxb.) Saff. Its chemical structure was established as 5-hydroxy-7-methoxy-8-formyl-3-benzoyl-2,6-dimethyl-2R,3S-dihy-drochromone on the basis of spectral methods, including ^1H-^1H COSY, ^1H-^13C COSY, and HMBC as well as single-crystal X-ray analysis.
文摘Four neo-lignans: isoamericanin A(1), isoamericanol A(2), americanin B(3), artabotrycinol(4), a hemiterpenoid: (R)-artabotriol(5) and other compounds: palmitic acid(6), β-sitosterol(7) and daucosterol(8) were isolated from the seeds of Artabostrys hexapetalus (L.f.) Bhadari (Annonaceae). Artabotrycinol(4) is a new neo-lignan and (R)-artabotriol(5) is a new hemiterpenoid. Their structures were established by IR, UV, MS, 1D and 2D NMR. Three other neo-lignans 1, 2, 3 were isolated from this plant for the first time.
文摘A new flavanone was isolated from the roots of Desmos cochinchinensis Lour Its chemical structure was elucidated by spectral analysis as 7 hydroxy 5 methoxy 8 formyl 6 methylflavanone, named desmosflavanone Ⅱ
