Pharmacomodulations of the benzoyl-thiosemicarbazide scaffold reveal antimicrobial agents targeting d-alanyl-d-alanine ligase in bacterio
作者:Alice Ameryckx、Lionel Pochet、Gang Wang、Esra Yildiz、Bouazza Es Saadi、Johan Wouters、Françoise Van Bambeke、Raphaël Frédérick
DOI:10.1016/j.ejmech.2020.112444
日期:2020.8
scaffold to identify new Ddl inhibitors with antibacterial potency. Five novel series of thiosemicarbazide analogues, 1,2,4-thiotriazole-3-thiones, 1,3,4-thiadiazoles, phenylthiosemicarbazones, diacylthiosemicarbazides and thioureas were synthesized via straightforward procedures, then tested against Ddl and on susceptible or resistant bacterial strains. Among these, the thiosemicarbazone and thiotriazole
d -Alanyl- d丙氨酸连接酶(DDL)是参与肽聚糖生物合成的细菌酶中的验证和有吸引力的目标。在目前的工作中,我们调查了苯甲酰基硫代氨基脲骨架的药物调节,以鉴定具有抗菌效力的新型Ddl抑制剂。通过简单的方法合成了五个新系列的硫代氨基脲类似物1,2,4-硫代三唑-3-硫酮,1,3,4-噻二唑,苯基硫代氨基脲,二酰基硫代氨基脲和硫脲,然后针对Ddl以及易感或耐药细菌菌株进行了测试。在这些当中,硫半脲和硫代三唑被认为是最有前途的支架,其在微摩尔范围内具有Ddl抑制能力。水杨醛-4(N)-(3,4-二氯苯基)硫半脲33是我们研究中最好的化合物之一,对VRE菌株的抗菌活性为3.12–6.25μM(1.06–2.12μg/ mL),而对VRE菌株的抗菌活性为12.5–25.0μM(4.25) –8.50μg/ mL),针对MRSA和VRSA菌株。对Ddl抑制剂4-(3,4-二氯苯基)-5-(2-羟苯基)-2