Harpagoside, which is one main iridoid constituent of the dried roots of Scrophularia ningpoensis Hemsl., was biotransformated by bacteria isolated from human feeal flora a.d three metabolites were obtained. The struc...Harpagoside, which is one main iridoid constituent of the dried roots of Scrophularia ningpoensis Hemsl., was biotransformated by bacteria isolated from human feeal flora a.d three metabolites were obtained. The structures of the metabolites, including two new alkaloids, named bar'Pagometabolins Ⅰ (l) and Ⅱ (2), and a known alkaloid acubinine B(3), were identified by chemical methods and the spectroscopic evidences.展开更多
Objective To study the chemical constituents of Hedyotis tenelliflora.Methods The compounds were isolated by chromatographic separation technology.The structures were identified on the basis of chemical and spectral d...Objective To study the chemical constituents of Hedyotis tenelliflora.Methods The compounds were isolated by chromatographic separation technology.The structures were identified on the basis of chemical and spectral data.Results Four iridoid glycosides were isolated from the whole plant of H.tenelliflora.On the basis of the chemical and spectral methods,their structures were elucidated as teneoside C(1),harpagoside(2),harpagide(3),and asperulosidic acid(4).Conclusion Compound 1 is a new compound,and compounds 2 and 3 are isolated from H.tenelliflora for the first time.展开更多
基金This work is supported by the ''Ninth 5-year Plan" Key Science Technique R & D Programme Foundation of China !(96-C02-03-06)
文摘Harpagoside, which is one main iridoid constituent of the dried roots of Scrophularia ningpoensis Hemsl., was biotransformated by bacteria isolated from human feeal flora a.d three metabolites were obtained. The structures of the metabolites, including two new alkaloids, named bar'Pagometabolins Ⅰ (l) and Ⅱ (2), and a known alkaloid acubinine B(3), were identified by chemical methods and the spectroscopic evidences.
文摘Objective To study the chemical constituents of Hedyotis tenelliflora.Methods The compounds were isolated by chromatographic separation technology.The structures were identified on the basis of chemical and spectral data.Results Four iridoid glycosides were isolated from the whole plant of H.tenelliflora.On the basis of the chemical and spectral methods,their structures were elucidated as teneoside C(1),harpagoside(2),harpagide(3),and asperulosidic acid(4).Conclusion Compound 1 is a new compound,and compounds 2 and 3 are isolated from H.tenelliflora for the first time.
