Conformational analysis of 5-lipoxygenase inhibitors: role of the substituents in chiral recognition and on the active conformations of the (methoxyalkyl)thiazole and methoxytetrahydropyran series
作者:Christine Lambert-van der Brempt、Pierre Bruneau、Maryannick A. Lamorlette、Stephen J. Foster
DOI:10.1021/jm00027a014
日期:1994.1
substituent has been examined through the synthesis of the ethyl (24b), ester (22b), methoxymethyl ether (26), hydroxymethyl (25b), aldehyde (27b), ketone (29b), hydroxy (31b), and methyl (23b) analogues and by analysis of their biological and conformational properties. This approach, complemented by the results of a similar study carried out on the Z and E isomers of the chiral ethyl-2-methylTHP derivative
对5-脂氧合酶(5-LO)抑制一系列外消旋(甲氧基烷基)噻唑的SAR SAR的研究(以化合物7(ZM-211965)为例)导致了其他活性的外消旋衍生物,其中噻唑部分已被被酯或醚取代。此外,醚的环化作用产生了非常有效但非手性的系列,即甲氧基四氢吡喃(甲氧基THP),目前正在临床评估中以41(ZD-2138)为例。最近的结构研究导致该系列的手性成员在四氢吡喃环中带有2-甲基取代基。三个非环状,外消旋系列中每一个的对映选择性潜力使我们合成了纯对映体((R)-13c,(S)-13c,(R)-13d,(S)-13d,(R)-15c ,(S)-15c,(R)-16b,(S)-16b和(R)-16c,(S)-16c)并确定其绝对配置。在完整的小鼠巨噬细胞和人类全血中评估了每种对映异构体的生物活性,结果表明,在这三个系列中,只有噻唑具有对映选择性,活性构型为(S)(在2至3个数量级之间)比小鼠巨噬细胞中的