Synthesis and biological evaluation of some novel urea and thiourea derivatives of isoxazolo[4,5-d]pyridazine and structurally related thiazolo[4,5-d]pyridazine as antimicrobial agents
作者:Hassan M. Faidallah、Sherif A. F. Rostom、Salem A. Basaif、Mohammed S. T. Makki、Khalid A. Khan
DOI:10.1007/s12272-013-0144-0
日期:2013.11
compared to Clotrimazole. Most of the tested isoxazolo[4,5-d]pyridazines displayed better antimicrobial profile than their corresponding thiazolo[4,5-d]pyridazine congeners. Four compounds namely, p-(3,7-dimethyl-4-oxo-4H-isoxazolo [4,5-d]pyridazine-5-yl)benzenesulfonylthioureas (11c–d), 3-substituted-2-[p-(3,7-dimethyl-4-oxo-4H-isoxazolo[4,5-d]pyridazine-5-yl)-benzene-sufonylimino]-4-oxothiazolidines
本研究报告了一些新型异恶唑并[4,5-d]哒嗪和结构相关的噻唑并[4,5-d]哒嗪的合成,以及它们作为抗菌剂的生物学评价。所提出的化合物被设计为包含药效团,例如尿素、硫脲、磺酰脲(硫脲)和一些被认为有助于预期生物活性的衍生官能团。结果表明,25 种化合物显示出广谱的抗菌活性,与革兰氏阴性菌株相比,对受试革兰氏阳性菌株的生长具有更大的抑制作用。此外,与克霉唑相比,14 种化合物能够对白色念珠菌真菌产生明显的生长抑制活性。大多数测试的异恶唑并[4,5-d]哒嗪比其相应的噻唑并[4,5-d]哒嗪同系物显示出更好的抗菌特性。四种化合物,即对-(3,7-二甲基-4-氧代-4H-异恶唑并[4,5-d]哒嗪-5-基)苯磺酰硫脲(11c–d)、3-取代-2-[p-( 3,7-二甲基-4-氧代-4H-异恶唑并[4,5-d]哒嗪-5-基)-苯-磺酰基亚氨基]-4-氧噻唑烷(13d)和对(2,7-二甲基-4-在本研究中发现氧代-4H-噻唑并[4