نتایج جستجو برای: lactones
تعداد نتایج: 4802 فیلتر نتایج به سال:
The reaction of 1-(p-hydroxyaryl)cyclobutanols and phenyl iodide(III) diacetate in hexafluoroisopropanol and water produced spiro cyclohexadienone lactones via a domino reaction.
Arylnaphthalene lignan lactones are naturally occurrmg dimers in Plants and known to have potential use in medicine 1,2. A few of them are reported to be highly to&; others find use as antioxidants and insecticides3. Cleistanthus col1inu.y (Roxb.) Benth. & Hookf. (family: Euphorbiaceae) is a highly poisonous plant. All parts of it are reported to be toxic and employed as a suicidal, homicidal, ...
A screening-level aquatic environmental risk assessment for macrocyclic fragrance materials using a "group approach" is presented using data for 30 macrocyclic fragrance ingredients. In this group approach, conservative estimates of environmental exposure and ecotoxicological effects thresholds for compounds within two subgroups (15 macrocyclic ketones and 15 macrocyclic lactones/lactides) were...
A.L. Cabrera's treatment of Argentine Vernonias (Cabrera, 1944) included four members of his Section Lepidaploa, subsection Flexuosae, three of which were listed as occurring in Entre Rios Province (Cabrera, 1974). Two of these, V. cognata Less. and V. platensis (Spreng.) Less., were said to be closely related, di!ering from each other only in the number of #owers in the capitulum, diameter of ...
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