Synthesis and biological activities of 5′-ethylenic and acetylenic modified l-nucleosides and isonucleosides
作者:Jun-Feng Wang、Xiao-Da Yang、Liang-Ren Zhang、Zhen-Jun Yang、Li-He Zhang
DOI:10.1016/j.tet.2004.06.131
日期:2004.9
Two series of 6'-halovinyl-adenosine stereoisomers including 5'-ethylenic and acetylenic substituted L-adenosine, 5'-ethylenic and acetylenic substituted isonucleosides were synthesized. In the L-nucleoside series, compounds 6b, 8b, 10b and 13b showed modest inhibition of SAH hydrolase (21, 44, 50 and 26% respectively) at 100 muM. The L-isomers of 5'-ethylenic and acetylenic modified isonucleoside 23, 24 exhibited no activity for the inhibition of SAH hydrolase, however, the D-isomers 30 and 31 showed some activities in the same test (35 and 21%). It indicated clearly the strict stereochemical requirement for the substrate of SAH hydrolase. Compounds 6b, 8b, 8c, 11b exhibited modest to good inhibition effects on the growth of HeLa cells or Bel-7420 cells at 1 muM (64, 44, 53 and 82% respectively). (C) 2004 Elsevier Ltd. All rights reserved.