Synthesis and characterisation of new coumarin derivatives as ultraviolet absorbers
β Scribed by Asiri, A.M.
- Book ID
- 120234819
- Publisher
- Emerald Group Publishing Limited
- Year
- 2003
- Tongue
- English
- Weight
- 217 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0369-9420
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## Abstract Condensation of 4-chloro-2-oxo-2H-chromene-3-carbonitrile with selected heteroarylamines in acetonitrile containing a catalytic amount of triethylamine, followed by intramolecular cyclization, gave the new coumarin derivatives with yields ranging from 43 % to 78 %. The novel compounds w
In a search for the inhibitors of platelet aggregation, certain coumarin derivatives were synthesized and evaluated for antiplatelet activity against thrornbin(Thr)-, arachidonic acid(AA)-, collagen(Co1)-, and platelet-activating-factor(PAF)-induced aggregation in washed rabbit platelets. These comp