Synthesis and cytotoxicity of 9-(2-deoxy-2-alkyldithio-β-<scp>D</scp>-arabinofuranosyl)purine nucleosides which are stable precursors to potential mechanistic probes of ribonucleotide reductases
作者:Stanislaw F. Wnuk、Elzbieta Lewandowska、Dania R. Companioni、Pedro I. Garcia Jr、John A. Secrist III
DOI:10.1039/b311504f
日期:——
adenine 5[prime or minute]-diphosphate. The arabino 2[prime or minute]-mercapto group might interact with the crucial thiyl radical at cysteine 439 leading to the inhibition of ribonucleotide reductases via formation of a Cys439-2[prime or minute]-mercapto disulfide bridge. The 2,6-diamino-, 2-amino-6-chloro- and 2-amino-6-methoxypurine ribosides were also converted to the corresponding 2[prime or
合成了一系列2 [prime或min] -thiothiosidesides,作为核糖核苷酸还原酶的潜在抑制剂。用硫代乙酸钾处理3 [主要或分钟],5 [主要或分钟] -O-TPDS-2 [主要或分钟] -O-(三氟甲磺酰基)腺苷得到2 [主要或分钟] -S的阿拉伯差向异构体-乙酰基-2 [伯或分钟]-硫代腺苷被脱乙酰化,以高收率得到9-(3,5-O-TPDS-2-硫基-小β-d-呋喃糖基)腺嘌呤。用偶氮二羧酸二乙酯-C(3)H(7)SH-THF处理后者,得到2 [伯或分钟]-丙基二硫化物,其被甲硅烷基化得到9-(2-脱氧-2-丙基二硫代-[小β]- d-阿拉伯呋喃糖基)腺嘌呤。随后进行甲苯磺酸化处理(O5 [prime or minutes]),并用焦磷酸酯取代甲苯磺酸酯,以稳定的形式提供了丙基混合二硫化物5 [prime or minutes] -O-diphosphate。其在用二硫