Results 121 to 130 of about 3,382 (174)
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Erythrina Alkaloids and a Pterocarpan from the Bark of Erythrina subumbrans
Journal of Natural Products, 2008Three new erythrina alkaloids, (+)-10,11-dioxoerythratine (1), (+)-10,11-dioxoepierythratidine (2), and (+)-10,11-dioxoerythratidinone (3), and a new pterocarpan, 1-methoxyerythrabyssin II (4), were isolated from the bark of Erythrina subumbrans, together with seven known pterocarpans, erythrabyssin II, erybraedin A, erystagallin A, erycristagallin ...
Thitima, Rukachaisirikul +2 more
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[Erythrina alkaloids from stems of Erythrina corallodendron].
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 2021This study aims to investigate Erythrina alkaloids from the stems of Erythrina corallodendron. Eighteen Erythrina alkaloids were isolated from the 95% ethanol extract of the stems of E. corallodendron by silica gel,octadecyl silica( ODS),Sephadex LH-20 column chromatography and preparative HPLC.
Yun-Shuang, Cai +3 more
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Erythrina—Chemical and Pharmacological Evaluation II: Alkaloids of Erythrina variegata L
Journal of Pharmaceutical Sciences, 1972Eight spiroamine alkaloids (I-VIII) and three carboxylated indole-3-alkylamines (IX-XI) were isolated from the various parts of Erythrina variegata, and their identity was established by chemical and spectral (UV, IR, NMR, and mass) methods. Of the eight spiroamine bases isolated, three (I, VI, and VII) were previously unreported in nature, while ...
S K Bhattacharya +2 more
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Erythrina and Related Alkaloids
2010The chemistry of Erythrina and related alkaloids from 1996 through to mid-2009 has been reviewed, with a particular focus on the preparation of Erythrina alkaloids possessing an aromatic D ring. A number of synthetic approaches to alkaloids bearing an aromatic D ring have been reported, including some asymmetric routes.
Andrew F, Parsons, Matthew J, Palframan
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Erythrina sp.III: Chemical Constituents of Erythrina Suberosa Roxb.Seeds
Journal of Pharmaceutical Sciences, 1970Abstract A phytochemical investigation of Erythrina suberosa seeds has resulted in the isolation of erythraline, erysodine, erysotrine, and hypaphorine.This is the first time that erysotrine has been found to occur naturally, although it is well known as a conversion product of other eryso-alkaloids.The alkaloidal constituents were found to vary in
Harkishan Singh, Amrik Singh Chawla
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Synthesis Pathways to Erythrina Alkaloids and Erythrina Type Compounds
ChemInform, 2007AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
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Three new erythrina alkaloids from the roots of Erythrina corallodendron
Journal of Asian Natural Products Research, 2021Three new erythrina alkaloids, eryalkals A (1), B (2), and C (3), were isolated from the roots of Erythrina corallodendron L. Their structures, including their absolute configurations, were elucidated based on analyses of HR-ESI-MS, 1D/2D NMR and single-crystal X-ray diffraction techniques.
Guo-Ru, Shi +2 more
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Two Erythrina alkaloids and three diarylpropanoids from Erythrina velutina
Tetrahedron, 2021Abstract Two new Erythrina alkaloid glycosides, 1 and 2, and three new diarylpropanoid glycosides 12–14 together with nine known compounds were isolated from the MeOH extracts of the seeds of Erythrina velutina. The structures and absolute configurations of these new compounds were elucidated through comprehensive spectroscopic analyses as well as ...
Kazuyuki Todoroki +4 more
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Quadrastichus erythrinae (Erythrina gall wasp).
2021Abstract Unusual growths, caused by Erythrina gall wasp (Quadrastichus erythrinae), on leaves and young shoots of coral trees (Erythrina spp). alerts to the presence of this emerging invasive species. Quadrastichus erythrinae measures a mere 1.5 mm and may be spread easily via infected leaves from infected Erythrina specimens.
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Dimeric Erythrina alkaloids as well as their key units from Erythrina variegata
Phytochemistry, 2022Ten dimeric and two monomeric Erythrina alkaloids, all of them are undescribed, were isolated from the bark of Erythrina variegata L. and named as erythrivarines O-Z. Their structures were determined on the basis of NMR and UV-spectroscopy and mass spectrometry.
Yu-Ting Tang +4 more
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