Use of 2-methylsulfonylethyl as a phosphorus protecting group in oligonucleotide synthesis via a phosphite triester approach
作者:C. Claesen、G.I. Tesser、C.E. Dreef、J.E. Marugg、G.A. van der Marel、J.H. van Boom
DOI:10.1016/s0040-4039(01)80142-8
日期:1984.1
2-Methylsulfonylethoxy dichlorophosphine has been converted into the mono-N-morpholino derivative and applied for the preparation of 5′-O,N-protected d-nucleoside-3phosphoramidites. The latter intermediates could be used in the presence of 1-hydroxybenzotriazole for the formation of 3′-5′-phosphotriester linkages. The MSE protecting group can be removed selectively and fast under mild basic conditions