Synthesis and antitubercular activity of 7-(R)- and 7-(S)-methyl-2-nitro-6-(S)-(4-(trifluoromethoxy)benzyloxy)-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazines, analogues of PA-824
作者:Xiaojin Li、Ujjini H. Manjunatha、Michael B. Goodwin、John E. Knox、Christopher A. Lipinski、Thomas H. Keller、Clifton E. Barry、Cynthia S. Dowd
DOI:10.1016/j.bmcl.2008.03.011
日期:2008.4
preference of this side chain, we prepared the two diastereomers of the 7-methyl-nitroimidazo-oxazine. Determination of the crystal structure of the 7-(S)-methyl derivative (5, cis) revealed that the benzylic side chain remained pseudoaxial while the 7-(R)-methyl derivative (6, trans) adopted the desired pseudoequatorial conformation. Both derivatives displayed similar activities against Mycobacterium