Diastereoselective syntheses of 3-aryl-5-(arylalkyl)-6-methyl-1-(1-phenylethyl)thioxotetrahydropyrimidin-4(1H)-ones: A stereochemical perspective from endo and exocyclic chiral centres
作者:Varun Kumar、Pallepogu Raghavaiah、Shaikh M. Mobin、Vipin A. Nair
DOI:10.1039/c0ob00230e
日期:——
Diastereoselective syntheses of 3-aryl-(S/R)-6-methyl-1-[(S/R)-1-phenylethyl)]-2-thioxotetrahydro pyrimidin-4(1H)-ones were achieved in good yields by the condensation of aryl isothiocyanates with ethyl 3-(1-phenylethylamino)butanoate in a one-pot reaction. Benzylation of these substrates illustrated that the orientations of the exocylic and endocylic groups determine the stereochemical outcome of the product formed.
Synthesis and absolute configuration of the optically active forms of 2-[bis(2-chloroethyl)amino]-4-methyltetrahydro-2H-1,3,2-oxazaphosphorine 2-oxide (4-methylcyclophosphamide)
作者:Ryszard Kinas、Krzysztof Pankiewicz、Wojciech J. Stec、Peter B. Farmer、Alan B. Foster、Michael Jarman