Alkaloids of Cocculus trilobus DC. Isolation and Structure of Erythrinan Alkaloids
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چکیده
منابع مشابه
Erythrinan alkaloids from seeds of Erythrina velutina.
Four new Erythrinan alkaloids (1-4) were isolated from the seeds of Erythrina velutina. The structures of these new compounds 1-4 were elucidated by spectroscopic methods including 2D-NMR. Three of four were found to be novel sulfated Erythrinan alkaloids.
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A concise asymmetric total synthesis of (+)-erysotramidine is described, using chiral base desymmetrisation of a meso-imide, N-acyliminium addition, retro-Diels-Alder cycloaddition and radical cyclisation as the key steps. A related route, starting from a cyclobutene-fused imide, was explored, and established a novel construction of the Erythrina alkaloid skeleton using a key ring-opening/ring-...
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Two major bisbenzylisoquinoline alkaloids, isotetrandrine and berbamine and three protoberberine type alkaloids berberine, palmatine, and jatrorrhizine were isolated from seeds of Berberis thunbergii DC. Berberine and oxyberberine, which is not present in the seeds, were isolated from the pericarp. Identity of the isolated substances was verified by spectral means (i.r., u.V., and mass spectrom...
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Five alkaloids were isolated from the underground part of Mahonia aquifolium of domestic origin: magnoflorine, berberine, palmatine, jatrorrhizine, and columbamine. The aerial part of this plant contained only berberine, palmati ne, and jatrorrhizine. The identity of the isolated bases was corroborated by colour reactions in the u.v. light, by i.r. and mass spectra, optical rotation and compar...
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Thiazoles, oxazole and their corresponding reduced derivatives, thiazolines and oxazolines, are found in marine sources exhibiting significant biological activities. The isolation, synthetic, and biological studies of these natural products, covering literature from January 2007 to June 2010, are summarized.
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ژورنال
عنوان ژورنال: YAKUGAKU ZASSHI
سال: 1978
ISSN: 0031-6903,1347-5231
DOI: 10.1248/yakushi1947.98.7_886