IR @ Goa University

Browsing School of Chemical Sciences by Author "D'Souza, A.M."

Browsing School of Chemical Sciences by Author "D'Souza, A.M."

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  • Biogenetic-type synthesis of (+)-cymbodiacetal, a constituent of Cymbopogon martinii 
    D'Souza, A.M.; Paknikar, S.K.; Dev, V.; Beauchamp, P.S.; Kamat, S.P. (Journal of Natural Products. 67(4); 2004; 700-702.)
    A biogenetic-type synthesis of (+)-cymbodiacetal (1), a novel bismonoterpenoid dihemiacetal, is described.
  • A convenient one-pot synthesis of 4-methyl-3-phenyl-, 3-aryl- and 3-aryl-4-phenylcoumarins 
    Kamat, S.P.; D'Souza, A.M.; Paknikar, S.K.; Beauchamp, P.S. (Journal of Chemical Research. (5); 2002; 242-246.)
    Thermal condensation of 2'-hydroxyacetophenones 1a-e with phenylacetic acid 2a in refluxing diphenyl ether gives 4-methyl-3-phenylcoumarins 3a-e. Similarly, reaction of 2-hydroxybenzaldehydes 1f-m and 2-hydroxybenzophenones ...
  • Sodium metaperiodate oxidation of isocarvacrol 
    Kamat, S.P.; D'Souza, A.M.; Paknikar, S.K. (Journal of Chemical Research. 2003(7); 2003; 395-397.)
    Sodium metaperiodate oxidation of isocarvacrol 8, a monoterpene phenol has been found to give hydrothymoquinone 13, a natural product and a ring cleavage product 7-oxo-5-isopropyloct-3-en-2,5-olide 14.
  • Synthesis of olivacene, a constituent of Archilejeunea olivacea 
    Kamat, S.P.; D'Souza, A.M.; Paknikar, S.K. (Indian Journal of Chemistry Section B-Organic Chemistry Including Medicinal Chemistry. 42(10); 2003; 2662-2664.)
    A simple synthesis of olivacene 1, a naturally occurring sesquiterpenoid hydrocarbon isolated from Archilejeunea olivacea has been described.
  • Unusual KMnO4 oxidation product of beta-ionone 
    Kamat, S.P.; D'Souza, A.M.; Paknikar, S.K.; Bhadbhade, M.M.; Gonnade, R.G. (Indian Journal of Chemistry Section B-Organic Chemistry Including Medicinal Chemistry. 46(6); 2007; 1038-1041.)
    KMnO4 oxidation of P-ionone has been reinvestigated. The structure proposed for the hydroxyionolactone 3 obtained in this reaction is supported by MS, UV, IR, H-1 and C-13 NMR data and further confirmed by single crystal ...

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