منابع مشابه
Synthesis of Functionalized Coumarins
The synthesis of functionalized 2-oxo-2H-coumarin derivatives has been studied by a one-pot reaction of o-hydroxybenzaldehyde, ethyl 2-bromoacetate and triphenylphosphine in the presence of catalytic amount of triethyl amine in EtOAc, water or under solvent free conditions. We have found the best results obtained under solvent free condition.
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For over 80 years prior to the work of Cholodny (1924, 1926) the twisted ribbons of ferric hydroxide found in iron-bearing waters were described as living organisms of the genera Gallionella and Spirophyllum. These early observations have been conveniently summarized and evaluated by Pringsheim (1949), so that at the present time Spirophyllum may be considered synonymous with Gallionella. It re...
متن کاملHypoglycaemic and biochemical properties of Cnestis ferruginea.
Increasing incidences of diabetes in Africa has prompted the search for safe and readily available alternative herbal remedies for the treatment of diabetes mellitus. Cnestis ferruginea was extracted with methanol and ethylacetate and the extracts obtained were tested for hypoglycaemic activities in streptozotocin (STZ)-induced diabetic rats and mice. The extracts (250 mg/kg body weight) were a...
متن کاملSupramolecular photodimerization of coumarins.
Stereoselective photodimerization of coumarin and its derivatives in supra-molecular systems is reviewed. The enantioselective photodimerization of coumarin and thiocoumarin in inclusion crystals with optically active host compounds is also described.
متن کاملAntifungal activity of coumarins.
The antifungal activity of 40 coumarins was tested against the fungal strains: Candida albicans (ATCC 14053), Aspergillus fumigatus (ATCC 16913) and Fusarium solani (ATCC 36031), using the broth microdilution method. Osthenol showed the most effective antifungal activity among all the compounds tested, with a MIC value of 125 microg/ml for Fusarium solani and 250 micro/ml for Candida albicans a...
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ژورنال
عنوان ژورنال: Revista Brasileira de Farmacognosia
سال: 2016
ISSN: 0102-695X
DOI: 10.1016/j.bjp.2016.02.006