isolation and structural elucidation of natural products in euphorbia erythradenia
Authors
abstract
similar resources
ISOLATION AND STRUCTURAL ELUCIDATION OF THE FIRST KNOWN C-HOMOPROTOBERBERINE
A novel C-homoprotoberberine alkaloid, Hediamine (2), has been isolated from the roots of Berberis actinucantha (Berberidaceae). Conclusive proof for the structure of hediamine was obtained by its comparison with the isomeric lactam (4), by chemical transformation, and by means of spectroscopic techniques (UV, IR, MS, NMR).
full textMass spectrometry in the structural elucidation of natural products: Glycosides
Mass Spectrometry is an important tool for the identification and structural elucidation of natural products. A review of the last fifteen years of research in this field, applied to natural glycosides, is presented.
full textFermentation, Isolation, Structural Elucidation and Biological Activities
A fermentation broth of an unidentified fungus (N983-46) was found to produce DNAgyrase inhibitors, CJ-12,371 (1) and CJ-12,372 (2). Following isolation by solvent extraction and silica gel and ODS(reverse phase) chromatographies, the structures were determined to be novel spiro-ketal compounds with S-connguration at position C-l. CJ-12,371 and CJ-12,372 inhibit both DNA supercoiling and relaxa...
full textStructural elucidation of rabeprazole sodium photodegradation products.
Rabeprazole sodium is a proton pump inhibitor, used in acid-related disorders, like peptic ulcers and gastroesophageal reflux. It is known to be an acid-labile drug, however, few data about its stability under other factors are available. The aim of this work was to study the photodegradation of rabeprazole, to determine its kinetics and to elucidate the structures of the main degradation produ...
full textisolation and structural elucidation of the first known c-homoprotoberberine
a novel c-homoprotoberberine alkaloid, hediamine (2), has been isolated from the roots of berberis actinucantha (berberidaceae). conclusive proof for the structure of hediamine was obtained by its comparison with the isomeric lactam (4), by chemical transformation, and by means of spectroscopic techniques (uv, ir, ms, nmr).
full textIsolation, structure elucidation and antioxidant screening of some natural products from Colebrookia oppositifolia
The phytochemical investigation on the chloroform and ethyl acetate soluble fractions of Colebrookia oppositifolia Smith. led to the isolation of four new-source compounds namely 1pentacosanol (1), stigmast-7-ene-3β-ol (2), p-hydroxybenzoic acid (3), ursolic acid (4) and seven known compounds namely triacontane (5), triacontanol (6), betulonic acid (7), negletein (8), 5,2′,6′-trihydroxy-7-metho...
full textMy Resources
Save resource for easier access later
Journal title:
research in pharmaceutical sciencesجلد ۷، شماره ۵، صفحات ۰-۰
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023