Stereoselective synthesis of s-(2-deoxy-α-D-glycosyl)- phosphorodithioates1 and of their (2R)-2-deoxy-2-deuterio- analogues. Novel route to C-2 d
作者:Joanna Borowiecka、Paweł Lipka、Maria Michalska
DOI:10.1016/s0040-4020(01)90350-3
日期:1988.1
quantitative yield and high stereoselectivity with respect to the α-isomer. The stereochemistry of this reaction is “cis” as demonstrated by the addition of deuterated 0,0-dialkylphosphorodithioic acids to 3,4,6-tri-O-acetyl-D-glucal which gives exclusively the α-dithiophosphates of (2R)-2-deoxy-2-deuterio-D-arabinohexopyranose. This result provides an efficient and fully stereoselective method of labeling
将0,0-二烷基磷酸二硫代酸加到完全保护的1,2-不饱和己基和戊基吡喃糖上,可以定量获得S-(2-脱氧-糖基)-磷酸二硫代酯,并且相对于α-异构体具有高立体选择性。该反应的立体化学是“顺式”,这是通过向3,4,6-tri-O-乙酰基-D-葡糖醛中添加氘代的0,0-二烷基磷酸二硫代酸而得到的,仅生成(2R)-的α-二硫代磷酸酯。 2-脱氧-2-氘-D-阿拉伯己基吡喃糖。该结果提供了标记2-脱氧单糖及其糖基衍生物中的脱氧功能的有效且完全立体选择的方法。