The S-pixyl group: an efficient photocleavable protecting group for the 5′ hydroxy function of deoxyribonucleosides
作者:Michael P. Coleman、Mary K. Boyd
DOI:10.1016/s0040-4039(99)01563-4
日期:1999.11
The 9-phenylthioxanthyl (S-pixyl or S-Px) group has been investigated as a photocleavable protecting group for primary alcohols, and specifically as a 5′ hydroxy protecting group for deoxyribonucleosides. Several alcohols, including the four nucleosides with protected exocyclic amino functions, were protected in very good to excellent yield by treatment of 9-chloro-9-phenylthioxanthene 3 in dry pyridine
已经研究了9-苯基硫杂蒽基(S-pixyl或S-Px)作为伯醇的光可裂解保护基,特别是作为脱氧核糖核苷的5'羟基保护基。几种醇,包括具有受保护的环外氨基官能团的四个核苷,可以通过在干燥的吡啶中处理9-氯-9-苯基噻吨并3来显示出衍生化的化合物,从而非常好至极佳的收率。在中性水溶液中照射受保护的底物,以优异的产率再生了起始醇。