Anti-inflammatory, analgesic and antiamoebic activity evaluation of pyrimido[1,6-a]benzimidazole derivatives synthesized by the reaction of ketoisothiocyanates with mono and diamines
作者:Sham M Sondhi、Shefali Rajvanshi、Monika Johar、Neelam Bharti、Amir Azam、Ashok Kumar Singh
DOI:10.1016/s0223-5234(02)01403-4
日期:2002.10
(UN) substituted o-phenylenediamines 1a-g reacted with 3-isothiocyanatobutanal to give pyrimidobenzimidazole derivatives, 2a-g, respectively. Products 4, 6 and 8, 10 were obtained by condensation of 3-isothiocyanatobutanal with 2,3-diaminopyridine, 1,4-diaminobutane and 3-isothiocyanatopropanal with 4,5-dimethyl-1,2-phenylenediamine, o-nitroaniline, respectively. S-Methylation of 2f and 11b gave products
(UN)取代的邻苯二胺1a-g与3-异硫氰酸根合丁醛反应,分别得到嘧啶基苯并咪唑衍生物2a-g。通过将3-异硫氰酸根合丁醛与2,3-二氨基吡啶,1,4-二氨基丁烷和3-异硫氰酸根合丙醛分别与4,5-二甲基-1,2-苯二胺,邻硝基苯胺缩合获得产物4、6和8、10。 。2f和11b的S-甲基化分别得到产物12a和12b。以50 mg kg(-1)po进行2a-g和12b的抗炎和镇痛活性评估。化合物2c表现出良好的抗炎性(46%)和轻度的镇痛活性(50%)。进行了2a-g对变形虫变形杆菌(HM1:IMSS)的抗厌氧活性评估(使用微量稀释法),化合物2a,2b,2d和2g在体外具有良好的抗厌氧活性。