SYNTHESIS OF mono-or di-VALENT CATIONS SUBSTITUTED Al-or Fe-PHOSPHATES AND THEIR ELECTRICAL CONDUCTIVITY
نویسندگان
چکیده
منابع مشابه
detection of volatile compounds of medicinal plants with some nano-sorbents using modified or new methodologies and investigation of antioxidant activity of their methanolic extracts
in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...
Mono- or di-fluorinated analogues of flavone-8-acetic acid: synthesis and in vitro biological activity.
BACKGROUND Previously, the antitumour activity of some flavone-8-acetic acid (FAA) derivatives substituted with an acid function in position 2 of the benzene ring was evaluated. The most active compound resulted the one bearing a fluorine atom in position 7 of the flavone nucleus. In this paper, we evaluated new mono- or di-fluorinated FAA derivatives. MATERIALS AND METHODS The cytotoxicity t...
متن کاملSynthesis and structure-activity relationship of oleanolic mono- or di-glycosides against Magnaporthe oryzae.
Saponins are naturally-occurring units with broad diversity and are usually recognized as phytoanticipins. In order to develop new saponin chemical entities with high activity against Magnaporthe oryzae, we selected oleanolic acid (OA), which has wide natural distribution and rich content in plants. We used the ability of OA to act as an aglycone for glycosylation to obtain information on the s...
متن کاملcast or acrylic splints-their application in oral and maxillofacial surgery
چکیده ندارد.
15 صفحه اولLewis base-catalyzed reactions of cyclopropenones: novel synthesis of mono- or multi-substituted allenic esters.
The reactions of cyclopropenones with nucleophiles (H2O or methanol) could be catalyzed by nitrogen-containing Lewis bases or phosphorus-containing Lewis bases, affording the corresponding mono- or multi-substituted allenic esters in moderate to excellent yields.
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ژورنال
عنوان ژورنال: Phosphorus Research Bulletin
سال: 2002
ISSN: 0918-4783
DOI: 10.3363/prb1992.14.0_77