منابع مشابه
Gelsemium alkaloids, immunosuppressive agents from Gelsemium elegans.
Bioassay-guided isolation of the stems of Gelsemium elegans has led to the isolation of two new Gelsemium alkaloids, 21-(2-oxopropyl)-koumine (1) and 11-methoxygelselegine (2), and two known alkaloids, koumine (3) and gelselegine (4). The structures of 1-2 were determined by spectroscopic (for both) and single-crystal X-ray diffraction (for 1) analysis. All compounds isolated were evaluated for...
متن کاملNew iridoids from Gelsemium species.
Four new iridoids structurally related to gelsemide (5) were isolated from two Loganiaceous plants, Gelsemium elegans and G. rankinii. Among them, GEIR-1 (1) has a novel tetracyclic caged structure.
متن کاملTwo new triterpenoids from Gelsemium elegans and Aglaia odorata.
Eleganoside A (1) and odoratanone A (15), a triterpenoid trisaccharide glycoside and a nortriterpenoid, together with twelve known compounds (2-13) and a mixture of cerebrosides (14) were isolated from Gelsemium elegans and Aglaia odorata. Their structures were elucidated by extensive spectroscopic and spectrometric analysis. Eleganoside A (1) features a 3-O-alpha-L-rhamnopyranosyl (1-->4)-beta...
متن کاملTwo new koumine-type indole alkaloids from Gelsemium elegans Benth.
Two new indole alkaloids, 21-oxokoumine (1) and furanokoumine (2), were isolated from the roots of Gelsemium elegans Benth together with three known compounds. The structures of the two novel compounds were elucidated by spectroscopic methods, including NMR, HR-ESI-MS, UV, IR, CD and molecular modeling. Compound 1 is the first instance of a koumine-type alkaloid with a carbonyl at the C-21 posi...
متن کاملThree novel β-carboline alkaloids from Gelsemium elegans.
Three novel β-carboline alkaloids characterized with a unique degraded monoterpenoid moiety, gelebolines A-C (1-3), together with 11 known alkaloids of different types, were isolated from the roots of Gelsemium elegans. The structures of new alkaloids were established on the basis of analysis of spectroscopic data. It is the first example for report of β-carboline from genus Gelsemium (Loganiac...
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ژورنال
عنوان ژورنال: The Journal of the American Pharmaceutical Association (1912)
سال: 1915
ISSN: 0898-140X
DOI: 10.1002/jps.3080040114