[Objective] This research aimed to study the taxonomic status of a potential energy plant, E. kansuensis Prokh (Euphorbiaceae). [Method] Fresh plants collected after field survey and specimens were observed and compar...[Objective] This research aimed to study the taxonomic status of a potential energy plant, E. kansuensis Prokh (Euphorbiaceae). [Method] Fresh plants collected after field survey and specimens were observed and compared to study the morphological characteristics and distribution of E. kansuensis Prokh. and E. ebraceolata Hayata in Subgen. Esula distributed in Jiangsu Province. [Result] There was no obvious morphological distinction but some overlaps between E. kansuensis Prokh. in Flora of China and E. ebraceolata Hayata in Flora of Jiangsu based on indumentum and root characteristics, therefore the standpoint that E. ebraceolata Hayata was a wrong name for E. kansuensis Prokh. in Flora of China proved to be reasonable. However, the description of E. kansuensis Prokh. should be modified as follows: indumentums, present or absent; roots, fusiform to terete; glands, oblong kidney-shaped. [Conclusion] This study is of great significance for the taxonomic identification of E. kansuensis Prokh.展开更多
Aim To study the chemical constituents of Euphorbia ebracteolata Hayata. Methods Column chromatography was used in the isolation procedure, while the structures of isolated compounds were elucidated by spectral data...Aim To study the chemical constituents of Euphorbia ebracteolata Hayata. Methods Column chromatography was used in the isolation procedure, while the structures of isolated compounds were elucidated by spectral data. Results Six compounds were isolated and their structures were identified as baccatin (1), 3-acetyl-β-amyrin (2), 3,3′-diacetyl-4,4′-dimethoxy- 2,2′,6,6′-tetrah ydroxy diphenylmethane (3), 2,4-dihydroxy-6-methoxy-3-methyl acetophenone (4), β-sitosterol (5), and daucosterol (6). Conclusion Baccatin was obtained from Euphorbia ebracteolata for the first time.展开更多
文摘[Objective] This research aimed to study the taxonomic status of a potential energy plant, E. kansuensis Prokh (Euphorbiaceae). [Method] Fresh plants collected after field survey and specimens were observed and compared to study the morphological characteristics and distribution of E. kansuensis Prokh. and E. ebraceolata Hayata in Subgen. Esula distributed in Jiangsu Province. [Result] There was no obvious morphological distinction but some overlaps between E. kansuensis Prokh. in Flora of China and E. ebraceolata Hayata in Flora of Jiangsu based on indumentum and root characteristics, therefore the standpoint that E. ebraceolata Hayata was a wrong name for E. kansuensis Prokh. in Flora of China proved to be reasonable. However, the description of E. kansuensis Prokh. should be modified as follows: indumentums, present or absent; roots, fusiform to terete; glands, oblong kidney-shaped. [Conclusion] This study is of great significance for the taxonomic identification of E. kansuensis Prokh.
文摘Aim To study the chemical constituents of Euphorbia ebracteolata Hayata. Methods Column chromatography was used in the isolation procedure, while the structures of isolated compounds were elucidated by spectral data. Results Six compounds were isolated and their structures were identified as baccatin (1), 3-acetyl-β-amyrin (2), 3,3′-diacetyl-4,4′-dimethoxy- 2,2′,6,6′-tetrah ydroxy diphenylmethane (3), 2,4-dihydroxy-6-methoxy-3-methyl acetophenone (4), β-sitosterol (5), and daucosterol (6). Conclusion Baccatin was obtained from Euphorbia ebracteolata for the first time.