This disclosure concerns novel compounds of Formula (I) as defined in the specification and compositions comprising such novel compounds. These compounds are useful antiviral agents, especially in inhibiting the function of the NS5A protein encoded by Hepatitis C virus (HCV). Thus, the disclosure also concerns a method of treating HCV related diseases or conditions by use of these novel compounds or a composition comprising such novel compounds.
Triorganozincates as efficient nucleophiles for the diastereoselective addition to N-(tert-butanesulfinyl)imines
作者:Raquel Almansa、David Guijarro、Miguel Yus
DOI:10.1016/j.tetasy.2008.01.038
日期:2008.3
Triorganozincates, generated by mixing a Grignard reagent and a dialkylzinc reagent, effectively react with (R)-N-(tert-butanesulfinyl)benzaldimine to give the expected alpha-branched sulfinamides in good to excellent yields and with diastereomeric ratios of up to 98:2, When the R group of the organomagnesium and the R' group of the diorganozinc are different, the selective transfer of only one of them to the imine can be achieved by the proper choice of the organometallic reagents. One can take advantage of the slow transfer rate of the methyl group to use it as a non-transferable one. The N-sulfinyl group of the products can be easily removed by acidic treatment, affording the corresponding chiral primary amines without the loss in enantiomeric purity. (C) 2008 Elsevier Ltd. All rights reserved.