<i>S</i>
‐Adenosyl Methionine Cofactor Modifications Enhance the Biocatalytic Repertoire of Small Molecule
<i>C</i>
‐Alkylation
作者:Iain J. W. McKean、Joanna C. Sadler、Anibal Cuetos、Amina Frese、Luke D. Humphreys、Gideon Grogan、Paul A. Hoskisson、Glenn A. Burley
DOI:10.1002/anie.201908681
日期:2019.12.2
A tandem enzymatic strategy to enhance the scope of C-alkylation of small molecules via the in situ formation of S-adenosyl methionine (SAM) cofactor analogues is described. A solvent-exposed channel present in the SAM-forming enzyme SalL tolerates 5'-chloro-5'-deoxyadenosine (ClDA) analogues modified at the 2-position of the adenine nucleobase. Coupling SalL-catalyzed cofactor production with C-(m)ethyl
Novel Trypanocidal Analogs of 5′-(Methylthio)-Adenosine
作者:Janice R. Sufrin、Arthur J. Spiess、Canio J. Marasco、Donna Rattendi、Cyrus J. Bacchi
DOI:10.1128/aac.00480-07
日期:2008.1
The purine nucleoside 5'-deoxy-5'-(hydroxyethylthio)-adenosine (HETA) is an analog of the polyamine pathway metabolite 5'-deoxy-5'-(methylthio)-adenosine (MTA). HETA is a lead structure for the ongoing development of selectively targeted trypanocidal agents. Thirteen novel HETA analogs were synthesized and examined for their in vitro trypanocidal activities against bloodstream forms of Trypanosoma
嘌呤核苷 5'-deoxy-5'-(hydroxyethylthio)-adenosine (HETA) 是多胺途径代谢物 5'-deoxy-5'-(methylthio)-adenosine (MTA) 的类似物。HETA 是正在进行的选择性靶向锥虫杀灭剂开发的先导结构。合成了 13 种新型 HETA 类似物,并检查了它们对血流形式的布氏布氏锥虫 LAB 110 EATRO 和至少一种耐药性布氏锥虫临床分离株的体外锥虫杀灭活性。还在无细胞试验中评估了新化合物作为锥虫 MTA 磷酸化酶底物的活性。该组中最有效的类似物是 5'-deoxy-5'-(羟乙硫基)-tubercidin,其体外细胞毒性(50% 抑制浓度 [IC50],10 nM)是 HETA 的 45 倍(IC50,450 nM) 对抗喷他脒抗性临床分离株 KETRI 269。结构-活性分析表明,锥虫 MTA 磷酸化酶对 HETA