Pyrazolopyrimidine nucleosides. 12. Synthesis and biological activity of certain pyrazolo[3,4-d]pyrimidine nucleosides related to adenosine
作者:Ganapati A. Bhat、Jean Louis G. Montero、Raymond P. Panzica、Linda L. Wotring、Leroy B. Townsend
DOI:10.1021/jm00142a009
日期:1981.10
The chemical synthesis of certain 4-substituted pyrazolo[3,4-d]pyrimidine nucleosides is described. Using 1-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)pyrazolo[3,4-d]pyrimidin-4-one (1) as the starting material, the reactive intermediate 4-chloro-1-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)pyrazolo[3,4-d]pyrimidine (2) was prepared in excellent yield. Compound 2 served as a versatile precursor for the
描述了某些4-取代的吡唑并[3,4-d]嘧啶核苷的化学合成。以1-(2,3,5-三-O-乙酰基-β-D-呋喃呋喃糖基)吡唑并[3,4-d]嘧啶-4-酮(1)为起始原料,反应性中间体4-氯-以优异的产率制备了1-(2,3,5-三-O-乙酰基-β-D-呋喃呋喃糖基)吡唑并[3,4-d]嘧啶(2)。化合物2用作合成多种4-取代的吡唑并[3,4-d]嘧啶核苷的通用前体。在这些核苷的体外和体内抗肿瘤研究中,发现伴随有4-氨基-1-β-D-呋喃核糖基吡唑并[3,4-d]嘧啶(3)的4-氨基取代基的任何改变。通过显着降低或丧失抗肿瘤活性。另一方面,