Cross dehydrogenation coupling reaction of purine derivatives with thioethers
作者:Xinjie Li、Peng Qi、Hongguang Du
DOI:10.1039/d1ob02353e
日期:——
A metal-free cross-dehydrogenation coupling method was established to synthesize N9 alkylated purine derivatives. Using PhI(OAc)2 as the oxidant, versatile thioethers were successfully employed as alkylation reagents. Under the optimized conditions, a variety of alkylated purine derivatives and other aromatic N-heterocycles were obtained in moderate to good yields. The regioselectivity of this protocol
Antimycobacterial Agents. 1. Thio Analogues of Purine
作者:Ashish K. Pathak、Vibha Pathak、Lainne E. Seitz、William J. Suling、Robert C. Reynolds
DOI:10.1021/jm030389b
日期:2004.1.1
Thio analogues of purine, pyridine, and pyrimidine were prepared based on the initial activity screening of several analogues of these heterocycles against Mycobacterium tuberculosis (Mtb). Certain 6-thio-substituted purine analogues described herein showed moderate to good inhibitory activity. In particular, two purine analogues 9-(ethylcarboxymethyl)-6-(decylthio)9H-purine (20) and 9-(ethylcarboxymethyl)-6-(dodecylthio)-9H-purine (21) exhibited MIC values of 1.56 and 0.78 mug/mL respectively against the Mtb H(37)Rv strain. N-9-Substitution apparently enhances the antimycobacterial activity in the purine series described herein.