ACTIVATION OF CONVENTIONAL<i>S</i>-PROTECTING GROUPS OF CYSTEINE BY CONVERSION INTO THE 3-NITRO-2-PYRIDINESULFENYL (NPYS) GROUP
作者:Rei Matsueda、Susumu Higashida、Richard J. Ridge、Gary R. Matsueda
DOI:10.1246/cl.1982.921
日期:1982.6.5
All of the conventional S-protecting groups of cysteine which were tested could be selectively converted to the 3-nitro-2-pyridinesulfenyl (Npys) group after treatment with an appropriate Npys halide. Unidirectional formation of an unsymmetrical disulfide bond is possible when Cys (Npys) is mixed with a free thiol of another Cys residue. Some of these features were exploited during the solid phase