A regio- and stereoselective 1,3-dipolar cycloaddition for the synthesis of novel spiro-pyrrolothiazolyloxindoles and their antitubercular evaluation
作者:Pitchaimani Prasanna、Kamaraj Balamurugan、Subbu Perumal、Perumal Yogeeswari、Dharmarajan Sriram
DOI:10.1016/j.ejmech.2010.09.019
日期:2010.12
The 1,3-dipolar cycloaddition of azomethine ylides derived from substituted isatins and 1,3-thiazolane-4-carboxylic acid to a series of 2-(arylmethylene)-2,3-dihydro-1H-inden-1-ones afforded twenty nine novel spiro-pyrrolothiazolyloxindoles regio- and stereoselectively in moderate yields. These compounds were screened for their in vitro activity against Mycobacterium tuberculosis H37Rv (MTB) using
由取代的靛红和1,3-噻唑烷-4-羧酸衍生的甲亚胺基团的1,3-偶极环加成反应生成一系列2-(芳基亚甲基)-2,3-二氢-1 H-茚满-1-酮二十九种新颖的螺-吡咯并噻唑基邻苯二酚区域选择性和立体选择性,产量适中。使用琼脂稀释法筛选这些化合物对结核分枝杆菌H37Rv(MTB)的体外活性。在筛选出的29种化合物中,螺[5.3']-5'-硝基氧吲哚-螺-[6.3“]-2,3-二氢-1 H-茚满-1” -one-7-(2,3-二氯苯基)四氢- 1 H-吡咯并[1,2- c已发现] [1,3]噻唑是最具活性的化合物,对MTB的MIC为2.8μM,分别是环丙沙星和乙胺丁醇的活性的1.67和2.70倍。