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Sixteen 4-hydroxycoumarin derivatives were synthesized, characterized through EI-MS and (1)H NMR and screened for urease… Expand A highly stereoselective one-pot procedure for the synthesis of five-membered annulated hydroxycoumarins has been developed. By… Expand An efficient and selective approach for the synthesis of functionalized pyranocoumarins has been developed via a gold(III… Expand havebeen used as useful intermediates for the synthesis of anti-coagulants, herbicides, and anticancer agents.Recent reportsshow… Expand 4-Hydroxycoumarins such as warfarin 1 have been the mainstay of oral anticoagulation therapy for over 20 years. Yet little detail… Expand Coumarins, 4-hydroxycoumarins, and 4-hydroxyquinolin-2(1H)-ones can be conveniently prepared by treatment of alpha-halocarboxylic… Expand The low oral bioavailability and rapid biliary excretion of peptide-derived HIV protease inhibitors have limited their utility as… Expand 1 To explain the large differences in (the stereoselectivity of) the clearances of the enantiomers of warfarin and acenocoumarol… Expand The case histories of two patients exposed to the novel anticoagulants brodifacoum and difenacoum are reported. Abnormal vitamin… Expand The chemical shift position of the benzylic proton, Hx, has been found to be diagnostic in indicating the preferred conformations… Expand