Search results for "Hypophosphorous acid"

showing 2 items of 2 documents

Stereoselective synthesis of 1-aminoalkanephosphonic acids with two chiral centers and their activity towards leucine aminopeptidase

2003

The stereoselective synthesis of 1-amino-2-alkylalkanephosphonic acids, namely, compounds bearing two chiral centers, was achieved by the condensation of hypophosphorous acid salts of (R)(+) or (S)(-)-N-alpha-methylbenzylamine with the appropriate aldehydes in isopropanol. Simultaneous deprotection and oxidation by the action of bromine water provided equimolar mixtures of the RS:RR and SR:SS diastereomers of desired acids. They appeared to act as moderate inhibitors of kidney leucine aminopeptidase with potency dependent on the absolute configuration of both centers of chirality.

PharmacologyHypophosphorous acidChemistryStereochemistryOrganic ChemistryOrganophosphonatesDiastereomerAbsolute configurationMetalloendopeptidasesStereoisomerismStereoisomerismAminopeptidaseCatalysisAnalytical Chemistry2-PropanolLeucyl AminopeptidaseZincchemistry.chemical_compoundModels ChemicalDrug DiscoveryStereoselectivityLeucineChirality (chemistry)SpectroscopyChirality
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Polycondensed nitrogen heterocycles. Part19. Pyrrolo[1,2-f]phenanthridines by pschorr-type cyclization brought about by hypophosphorous acid

1986

Pyrrolo[1,2-f]phenanthridines were prepared in good yields by the diazotization in acetic acid of the amines la,b and subsequent treatment with hypophosphorous acid. The necessity for hypophosphorous acid in the reaction was demonstrated.

chemistry.chemical_compoundAcetic acidHypophosphorous acidchemistryOrganic ChemistryOrganic chemistrychemistry.chemical_elementNuclear magnetic resonance spectroscopyNitrogenJournal of Heterocyclic Chemistry
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