The (3,5-trans)-7-chloro-5-(2-chlorophenyl)-2-oxo-1,2,3,5-tetrahydro-4,1-benzoxazepine-3-acetic acid derivatives 1 have been previously identified as potent squalene synthase inhibitors. A series of (4,1-benzoxazepin-3-ylidene)acetic acid derivatives were synthesized and evaluated for their inhibition of rat and human squalene synthase, and the (E)-isomers were found to exhibit potent inhibitory activity, with the same potency as 4,1-benzoxazepine-3-acetic acid derivatives. In contrast the (Z)-isomers did not exhibit significant inhibitory activity, and the active conformation of the 4,1-benzoxazepine-3-acetic acid derivatives was deduced from the folded conformation of the (E)-isomers.
(3,5-trans)-7-chloro-5-(2-chlorophenyl)-2-oxo-1,2,3,5-tetrahydro-4,1-benzoxazepine-3-acetic acid derivatives 1 以前曾被鉴定为有效的
角鲨烯合成酶
抑制剂。研究人员合成了一系列(4,1-苯并氧氮杂卓-3-亚基)
乙酸衍
生物,并评估了它们对大鼠和人类
角鲨烯合成酶的抑制作用,结果发现(E)-异构体具有强效的抑制活性,其效力与 4,1-苯并氧氮杂卓-3-
乙酸衍
生物相同。相反,(Z)-异构体没有表现出明显的抑制活性,而 4,1-苯并氧氮杂卓-3-
乙酸衍
生物的活性构象是根据(E)-异构体的折叠构象推断出来的。