3‘-<i>C</i>-Branched-Chain-Substituted Nucleosides and Nucleotides as Potent Inhibitors of <i>Mycobacterium </i><i>t</i><i>uberculosis </i>Thymidine Monophosphate Kinase
作者:Veerle Vanheusden、Hélène Munier-Lehmann、Matheus Froeyen、Laurence Dugué、Arne Heyerick、Denis De Keukeleire、Sylvie Pochet、Roger Busson、Piet Herdewijn、Serge Van Calenbergh
DOI:10.1021/jm021108n
日期:2003.8.1
3'-position was explored via the introduction of various substituents at the 3'-position of the thymidine monophosphate (dTMP) scaffold. Various 3'-C-branched chain substituted nucleotides in the 2'-deoxyribo (3-6) and ribo series (7, 8) were synthesized from one key intermediate (23). 2'-Deoxy analogues proved to be potent inhibitors of TMPKmt: 3'-CH(2)NH(2) (4), 3'-CH(2)N(3) (3), and 3'-CH(2)F (5) nucleotides
结核分枝杆菌(TMPKmt)的胸苷单磷酸激酶(TMPK)代表了一种阻断细菌DNA合成的有吸引力的靶标。为了找到TMPKmt的高亲和力抑制剂,通过在胸苷单磷酸(dTMP)支架的3'-位置引入各种取代基来探索酶在3'-位置的空腔。从一个关键的中间体(23)合成了2'-脱氧核糖(3-6)和核糖系列(7,8)中的各种3'-C支链取代的核苷酸。2'-脱氧类似物被证明是TMPKmt的有效抑制剂:3'-CH(2)NH(2)(4),3'-CH(2)N(3)(3)和3'-CH(2 F(5)个核苷酸在该系列中表现出最高亲和力,K(i)值分别为10.5、12和15 microM。这些结果表明,TMPKmt可耐受在3'-位引入空间上要求的取代基。核糖类似物经历了显着的亲和力降低,这可能是由于Tyr103在2'位置附近的空间位阻。尽管5'-O-磷酸化的化合物对酶具有更高的亲和力,但亲本核苷通常以相同的数量级显示出对