作者:Cecil D. Kwong、Arthur J. Elliot、John A. Montgomery
DOI:10.1002/(sici)1099-1344(1998100)41:10<879::aid-jlcr147>3.0.co;2-a
日期:1998.10
5H-[2-14C]-pyrrolo[3,2-d]pyrimidine 1a, the major byproduct of an earlier reported synthesis of 1. In this new route, the source of the label was N,N′-bismethoxycarbonyl-S-methyl-[14C]-isothiopseudourea 8, prepared from 2-methyl-[14C]-2-thiopseudourea in high yield by a phase transfer catalysis method. Condensation of 8 with methyl 3 amino-4-(3-pyridylmethyl)-1H-pyrrolo-2-carboxylate 4 in acetic acid and methanol
嘌呤核苷磷酸化酶 (PNP) 抑制剂可用于治疗多种以活化 T 细胞为致病性的疾病,例如类风湿性关节炎和银屑病、T 细胞白血病和淋巴瘤,以及预防宿主与. 移植排斥。目前在临床试验中的 PNP 抑制剂是 9-(3-pyridylmethyl)-9-deazaguanine (2-amino-7-(3-pyridylmethyl)-4-oxo-3H,5H-pyrrolo[3,2-d]pyrimidine 或peldesine)。我们现在报告了一种改进的路线,该路线以高产率得到 9-(3-pyridylmethyl)-[2-14C]-9-deazaguanine 1 并避免形成 2-methylthio-7-(3-pyridylmethyl)-4-oxo- 3H,5H-[2-14C]-吡咯并[3,2-d]嘧啶 1a,是早先报道的 1 合成的主要副产物。在这条新路线中,标记的来源是 N,N'-双甲氧基羰基-