Synthesis, Biological Activity, and SAR of Antimycobacterial 9-Aryl-, 9-Arylsulfonyl-, and 9-Benzyl-6-(2-furyl)purines
作者:Anne Kristin Bakkestuen、Lise-Lotte Gundersen、Bibigul T. Utenova
DOI:10.1021/jm0408924
日期:2005.4.1
9-Aryl-, 9-arylsulfonyl- and 9-benzyl-6-(2-furyl)purines were synthesized by N-alkylation or N-arylation of the purine followed by Stille coupling to introduce the faryl substituent in the 6-position and the compounds screened for activity against Mycobacterium tuberculosis. The 9-aryl- and 9-sulfonylarylpurines exhibited weak activity toward the bacteria, but 9-benzylpurines were good inhibitors especially those carrying electron-donating substituents on the phenyl ring. A chlorine atom in the purine 2-position further enhanced activity. The high antimycobacterial activity (MIC 0.39,mu g/mL against M. tuberculosis), low toxicity against mammalian cells and activity inside macrophages found for 2-chloro-6-(2-furyl)-9-(4-methoxyphenylmethyl)9H-purine makes this compound a highly interesting potential antituberculosis drug.