Synthesis and Biological Activity of Certain 4‘-Thio-<scp>d</scp>-arabinofuranosylpurine Nucleosides
作者:John A. Secrist、Kamal N. Tiwari、Anita T. Shortnacy-Fowler、Lea Messini、James M. Riordan、John A. Montgomery、Scott C. Meyers、Steven E. Ealick
DOI:10.1021/jm980195+
日期:1998.9.1
A series of 4'-thio-D-arabinofuranosylpurine nucleosides was prepared and evaluated as potential anticancer agents. The details of a convenient and high-yielding synthesis of the carbohydrate precursor 1-O-acetyl-2,3,5-tri-O-benzyl-4-thio-D-arabinofuranose (6) are presented. Proof of structure and configuration at all chiral centers of the nucleosides was obtained through an X-ray crystal structure
制备了一系列的4'-硫代-D-阿拉伯呋喃糖基嘌呤核苷,并将其评估为潜在的抗癌药。给出了碳水化合物前体1-O-乙酰基-2,3,5-三-O-苄基-4-硫代-D-阿拉伯呋喃糖的方便且高产合成的细节(6)。通过9alpha的X射线晶体结构以及在9beta和9alpha上进行的NOE实验,获得了核苷所有手性中心的结构和构型的证明。在培养的一系列人类癌细胞系中评估了所有六个目标化合物。两种目标化合物,以二氨基嘌呤(12)和鸟嘌呤(16)为基础的β端基异构体,具有明显的细胞毒性。选择了其中一种化合物(12)用于动物研究,但在鼠结肠36肿瘤模型中发现在最大耐受剂量下没有选择性。