Synthesis of new 2',3'-dideoxy-2',3'-α-fused-heterocyclic uridines, & some 2', 3'-ene-2'-substituted uridines from easily accessible 2',3'- ene-3'phenylselenonyl uridine
作者:W. Tong、J.-C. Wu、A. Sandström、J. Chattopadhyaya
DOI:10.1016/s0040-4020(01)88395-2
日期:1990.1
displacement reaction at C-3' by the neighbouring 2' -substituent to give a variety of hitherto unreported 2',3' -dideoxy-2',3'-α-fused-heterocyclic derivatives of uridine such as 2',3'-dideoxy-2',3'-α-biimino uridine 5 and 8, 2',3'-dideoxy-2', 3'-α-(2-iminoimidazolidino)uridine 9 and 10, 2',3' -dideoxy-2',3'-N-α-(1,2-ethylene)uridine 11 and 12, and 2',3'-dideoxy-2',3'-S-α-(1,2-ethylene)uridine 20 and 21. Anions
已经证明了2'3'-烯-3'-苯基硒烯酮1和2的合成效用为[CH 2 + -CH 2 + ]的合成等价物。它们充当迈克尔受体,并在C-2'与肼,1,2-乙二胺,1,3-二氨基丙烷,1,2-乙二硫醇,乙醇胺和2-巯基乙醇进行共轭加成反应,生成中间体加合物2 ”,3'-二脱氧-3'- phenylselenonyl -2'-取代的呋喃木糖基衍生物,其然后经历一个浅显分子内小号ñ在C-3'处发生2型置换反应,由相邻的2'-取代基产生迄今未报道的尿苷的2',3'-二脱氧-2',3'-α-稠合杂环衍生物,如2', 3'-二脱氧-2' ,3'-α-biimino尿苷5和8,2' ,3'-二脱氧-2' ,3'-α-(2- iminoimidazolidino)尿苷9和10,2' ,3' -二脱氧-2',3'-N-α-(1,2-乙烯)尿苷11和12,以及2',3'-二脱氧-2',3'-S-α-(1,2-乙