Benzo[d]thiazole-2-carbanilides as new anti-TB chemotypes: Design, synthesis, biological evaluation, and structure-activity relationship
作者:Tejas M. Dhameliya、Rishu Tiwari、Arkaprabha Banerjee、Sahaj Pancholia、Dharmarajan Sriram、Dulal Panda、Asit K. Chakraborti
DOI:10.1016/j.ejmech.2018.05.049
日期:2018.7
TB due to developed resistance and TB-HIV synergism urges for new anti-TB drugs. Seventy-two benzo[d]thiazole-2-carbanilides have been synthesized through CDI-mediated direct coupling of benzo[d]thiazole-2-carboxylic acids with aromatic amines using a three step methodology which includes a green protocol for synthesis of ethyl benzo[d]thiazole-2-carboxylates, precursor of the desired carboxylic acids
结核病是全球第二大死亡原因。由于已发展的耐药性和结核病-艾滋病毒的协同作用,现有药物不足以治疗结核病,因此迫切需要新的抗结核病药物。通过CDI介导的苯并[ d ]噻唑-2-羧酸与芳香胺的直接偶联,使用三步法,其中包括绿色的乙苯乙基合成方案,合成了72种苯并[ d ]噻唑-2-氨基甲酸酯[ d ]噻唑-2-羧酸酯,所需羧酸的前体。在体外评估了这些化合物对结核分枝杆菌H 37的抗结核活性Rv(ATCC27294株)。对MIC值在0.78–6.25μg/ mL(1.9–23μM)范围内的32种化合物进行了针对RAW 264.7细胞系的细胞生存力测试,发现30种化合物无毒(抑制率<50%) 。MIC为0.78μg/ mL的最具活性的化合物(例如4i,4n,4s,4w,6f,6h,6u,7e,7h,7p,7r和7w)表现出64的治疗指数。N-芳基苯并[ d已经确定]噻唑-2-羧酰胺具有抗分枝杆菌活性