Synthesis of 2-Aryl-4H-3,1-Benzoxazin-4-ones: A Class of a-Chymotrypsin Inhibitors
作者:Zulfiqar Ali Khan、Noshaba Afzal、Zaib Hussain、Syed Ali Raza Naqvi、Ayesha Bari、Sohail Anjum Shahzad、Muhammad Yar、Nasir Mahmood、Shazia Anwer Bukhari、Asim Mansha、Ameer Fawad Zahoor、Abdur Rahman Khan、Matloob Ahmad
DOI:10.14233/ajchem.2014.16108
日期:——
Twenty one derivatives of 2-aryl-4H-3,1-benzoxazin-4-one were synthesized and their potential therapeutically significance and structure-activity relationship were tested against a-chymotrypsin. Majority of synthesized compounds showed significant in vitro a-chymotrypsin inhibitory properties having IC50 values in the range of 5.42 ± 1.66 – 41.27 ± 1.33 μM, whereas standard inhibitor chymostatin have IC50 value 7.13 ± 1.06 μM. In the present series compounds 2-(2-fluorophenyl)-4H-3,1-benzoxazin-4-one (3h), 2-(2-bromophenyl)-4H-3,1-benzoxazin-4-one (3n) and 2-(1-naphthyl)-4H-3,1-benzoxazin-4-one (3t) with IC50 values 7.22 ± 0.75, 6.99 ± 0.29 and 5.42 ± 1.66 μM, respectively were found to be most active members of series, even better than standard inhibitor a-chymostatin.
合成了21种2-芳基-4H-3,1-苯并噁嗪-4-酮的衍生物,并测试了它们的潜在治疗意义和结构-活性关系对抗α-胰蛋白酶。大多数合成化合物显示出显著的体外α-胰蛋白酶抑制特性,IC50值范围为5.42 ± 1.66 – 41.27 ± 1.33 μM,而标准抑制剂chymostatin的IC50值为7.13 ± 1.06 μM。在本系列中,2-(2-氟苯基)-4H-3,1-苯并噁嗪-4-酮(3h)、2-(2-溴苯基)-4H-3,1-苯并噁嗪-4-酮(3n)和2-(1-萘基)-4H-3,1-苯并噁嗪-4-酮(3t)的IC50值分别为7.22 ± 0.75、6.99 ± 0.29和5.42 ± 1.66 μM,被发现是系列中最活跃的化合物,甚至优于标准抑制剂α-胰蛋白酶抑制剂chymostatin。