Design and Synthesis of Arylthiophene-2-Carbaldehydes via Suzuki-Miyaura Reactions and Their Biological Evaluation
作者:Shaukat Ali、Nasir Rasool、Aman Ullah、Faiz-ul-Hassan Nasim、Asma Yaqoob、Muhammad Zubair、Umer Rashid、Muhammad Riaz
DOI:10.3390/molecules181214711
日期:——
A series of various novel 4-arylthiophene-2-carbaldehyde compounds were synthesized in moderate to excellent yields via Suzuki-Miyaura cross-coupling with different arylboronic pinacol esters/acids. The synthesized products were screened for their antibacterial, haemolytic, antiurease, and nitric oxide (NO) scavenging capabilities and interestingly, almost all products turned out to have good activities. 3-(5-Formyl-thiophene-3-yl)-5-(trifloromethyl)benzonitrile (2d) revealed excellent antibacterial activity, showing an IC50 value of 29.7 µg/mL against Pseudomonas aeruginosa, compared to the standard drug streptomycin with an IC50 value 35.2 µg/mL and was also found to be the best NO scavenger, with an IC50 value of 45.6 µg/mL. Moreover, 4-(3-chloro-4-fluoro-phenyl)thiophene-2-carbaldehyde (2i) exhibited a superior haemolytic action and an outstanding urease inhibition, showing an IC50 value of 27.1 µg/mL.
通过与不同芳基硼频哪醇酯/酸的 Suzuki-Miyaura 交叉偶联,以中等至优异的产率合成了一系列各种新型 4-芳基噻吩-2-甲醛化合物。对合成产品的抗菌、溶血、抗脲酶和一氧化氮(NO)清除能力进行了筛选,有趣的是,几乎所有产品都具有良好的活性。 3-(5-甲酰基-噻吩-3-基)-5-(三氟甲基)苯甲腈 (2d) 显示出优异的抗菌活性,与具有 IC50 的标准药物链霉素相比,对铜绿假单胞菌的 IC50 值为 29.7 µg/mL值 35.2 µg/mL,也被发现是最好的 NO 清除剂,IC50 值为 45.6 µg/mL。此外,4-(3-氯-4-氟-苯基)噻吩-2-甲醛(2i)表现出优异的溶血作用和出色的脲酶抑制作用,IC50值为27.1 µg/mL。