CycloSal-phosphate Pronucleotides of Cytostatic 6-(Het)aryl-7-deazapurine Ribonucleosides: Synthesis, Cytostatic Activity, and Inhibition of Adenosine Kinases
作者:Pavla Spáčilová、Petr Nauš、Radek Pohl、Ivan Votruba、Jan Snášel、Helena Zábranská、Iva Pichová、Ria Ameral、Gabriel Birkuš、Tomáš Cihlář、Michal Hocek
DOI:10.1002/cmdc.201000192
日期:——
class of nucleoside cytostatics (6‐hetaryl‐7‐deazapurine ribonucleosides) was prepared. The corresponding 2′,3′‐isopropylidene 6‐chloro‐7‐deazapurine nucleosides were converted into 5‐O′‐cycloSal‐phosphates. These underwent a series of Stille or Suzuki cross‐couplings with diverse (het)arylstannanes or ‐boronic acids to yield the protected 6‐(het)aryl‐7‐deazapurine pronucleotides that were subsequently
制备了一系列最近描述的一类新的核苷细胞抑制剂(6-杂芳基-7-去氮杂嘌呤核糖核苷)的环状磷酸Sal前药。相应的2',3'-亚异丙基-6-氯-7-脱氮嘌呤核苷转化为5- ö ' -环磷酸盐。这些经历了一系列的Stille或Suzuki交叉偶联,以及各种(杂)芳基锡烷或硼酸,得到了受保护的6-(杂)芳基-7-脱氮嘌呤原核苷酸,随后被脱保护得到了12种游离原核苷酸衍生物。将原核苷酸的体外细胞抑制作用与亲本核苷类似物进行了比较。在大多数情况下,前核苷酸的活性类似于或稍微比相应的母体核苷的降低,用7-氟pronucleotides异常13,13b中,和13 d,这已经显示出GIC 50进行了改进该值降低一个数量级(到低纳摩尔范围)。环的存在磷酸盐基团也影响对多种细胞系的选择性。发现了几种前核苷酸,它们强烈抑制人腺苷激酶,但仅弱抑制MTB腺苷激酶。