Reductive Ligation Mediated One-Step Disulfide Formation of <i>S</i>-Nitrosothiols
作者:Jiming Zhang、Sheng Li、Dehui Zhang、Hua Wang、A. Richard Whorton、Ming Xian
DOI:10.1021/ol101863s
日期:2010.9.17
reductive ligation mediated disulfideformation of S-nitrosothiols was developed. This reaction involves the reaction of the S-nitroso group with phosphine-thioesters to form sulfenamide and thiolate intermediates, which then undergo a fast intermoleculardisulfideformation to form stable conjugates. This reaction can be used to design new biosensors of S-nitrosated proteins.
The reactions between S-nitrosothiols and phosphite esters, including P(OPh)3, P(OBn)3, and P(OEt)3, were studied. Two different conjugated adducts, thiophosphoramidates and phosphorothioates, were formed, depending on the structures of the S-nitrosothiol substrate (e.g., primary vs tertiary). These reactions proceeded under mild conditions, and the reaction mechanisms were studied using experiments