One-Pot Synthesis of TBMPS (<i>bis</i>[<i>tert</i>-Butyl)-1 Pyrenylmethyl-Silyl) Chloride as a Novel Fluorescent Silicon-Based Protecting Group for Protection of 5′-OH Nucleosides and Its Use as Purification Handle in Oligonucleotide Synthesis
作者:Snehlata Tripathi、Krishna Misra、Yogesh S. Sanghvi
DOI:10.1080/15257770500230566
日期:2005.8
and novelsynthesis of bis(tert-butyl)- 1-pyrenylmethyl-silyl group (TBMPS) has been reported having fluorescent properties conferred by the pyrenyl group. This silyl group being base labile is efficiently used for one-pot protection of the 5-OH of the nucleosides. While incorporated terminally at the 5-OH of long sequences viz. AA TGG AGC CAG T and GC TAT GTCAGT TCC CCT TGG TTC TC, this group is also
Di(<i>tert</i>-butyl)[(pyren-1-yl)methoxy]silyl Chloride: Synthesis and Application in Purification of Synthetic Deoxyribonucleotides
作者:Roli Mishra、Krishna Misra
DOI:10.1246/cl.2007.768
日期:2007.6.5
Di(tert-butyl)[(pyren-1-yl)methoxy]silyl chloride reacts selectively with the 5′-hydroxy groups in deoxynucleosides and this can be removed under conditions which do not affect other commonly used acid or base labile protecting groups, yet it, is stable to phosphorylation conditions. While incorporated terminally at 5′-OH of the long sequence viz., 26-mer, this group is also helpful in subsequent purification by HPLC as well as PAGE. Fluorescence properties of these sequences were studied to find the suitability of the approach.