On the basis of a preliminary study of the antimycobacterial activity of thiobenzanilides, a group of 4'-isopropyl- and 4'-butylthiobenzanilides have been synthesized and tested against Mycobacterium tuberculosis, Mycobacterium kansasii, Mycobacterium avium and Mycobacterium fortuitum. The effect of the substituents on minimum inhibitory concentrations was calculated by the Free-Wilson method. The separated values were analyzed by the Topliss approach. The substitution of the thiobenzanilide in position 4' by the isopropyl group or butyl group increased the antimycobacterial activity less than the cyclohexyl group. The substitution in position 4 decreased the activity by the steric effect.
根据对硫苯酰胺抗分枝杆菌活性的初步研究,合成了一组4'-异丙基和4'-丁基硫苯酰胺,并对结核分枝杆菌、堪萨斯分枝杆菌、埃维分枝杆菌和偶发分枝杆菌进行了测试。通过Free-Wilson方法计算了取代基对最小抑制浓度的影响。分离的数值通过Topliss方法进行了分析。在4'位置用异丙基或丁基取代硫苯酰胺会使抗分枝杆菌活性低于环己基。在4位置的取代会因为立体效应而降低活性。