3-Chlorobenzoic acid hydrazide was reacted with different aryl isothiocyanates to give the corresponding 1-(3-
chlorobenzoyl)-4-substituted thiosemicarbazides 1-16. Reaction yields ranged from 74 to 96%. Structures of the synthesized
compounds were defined on the basis of 1H NMR and IR spectra. As it was showed the antibacterial activity of the
obtained compounds was limited only towards Gram-positive bacteria. As regards B. cereus ATCC 10876, 1-(3-
chlorobenzoyl)-4-(3,5-dichlorophenyl)thiosemicarbazide (8) was 16 times more active than ampicillin and 8 times more
active than cefuroxime.
3-氯苯甲酸酰
肼与不同的芳基异
硫氰酸酯反应,得到相应的 1-(3-
氯苯甲酰基)-4-取代的
硫代
氨基甲酰
肼 1-16。反应产率为 74% 至 96%。根据 1H NMR 和 IR 光谱确定了合成化合物的结构。结果表明,所获化合物的抗菌活性仅限于革兰氏阳性菌。对于 B. cereus A
TCC 10876,1-(3-
氯苯甲酰基)-4-(3,5-二
氯苯基)
硫代
氨基甲酰
肼(8)的活性是
氨苄西林的 16 倍,是
头孢呋辛的 8 倍。