Synthesis and properties of a novel nucleoside derivative possessing a 2,3,5,6-tetraazabenzo[cd]azulene skeleton
作者:Yasuyuki Hirama、Hiroshi Abe、Noriaki Minakawa、Akira Matsuda
DOI:10.1016/j.tet.2010.08.063
日期:2010.10
We describe herein the synthesis and properties of the novel nucleoside derivative, 4,7-diamino-2-(2-deoxy-β-d-erythro-pentofuranosyl)-2,6-dihydro-7H-2,3,5,6-tetraazabenzo[cd]azulene (1). The palladium catalyzed cross-coupling reaction of 2,4-diamino-5-iodo-7-(2-deoxy-β-d-erythro-pentofuranosyl)pyrrolo[2,3-d]pyrimidine (9) with acrylonitrile afforded 2,4-diamino-5-[(E)-1-cyano-2-ethenyl]-7-(2-deox
我们在本文中描述了新型核苷衍生物4,7-二氨基-2-(2-脱氧-β - d-赤型-戊呋喃糖基)-2,6-二氢-7 H -2,3,5的合成和性质, 6-四氮苯并[ cd ]](1)。2,4-二氨基-5-碘-7-(2-脱氧-β - d-赤型-五呋喃糖基)吡咯并[2,3- d ]嘧啶(9)与丙烯腈的钯催化交叉偶联反应得到2, 4-二氨基-5-[(E)-1-氰基-2-乙烯基] -7-(2-脱氧-β - d-赤型-五呋喃糖基)吡咯并[2,3- d ]嘧啶(10)的产率为77%,将其在NaSPh存在下用MeOH中的NaOMe溶液处理,以64%的产率得到所需的1。而1是在室温下在浓氨水稳定,它逐渐在水中水解以得到4-氨基-2-(2-脱氧β- d -赤-pentofuranosyl)-2,6-二氢-7- ħ -2, 3,5,6-四氮杂苯并[ cd ] azulen-7-one(12)。密度泛函计算表明,在模型研究中12比1具有20