Further structure–activity relationships in the series of tropanyl esters endowed with potent antinociceptive activity
作者:Serena Scapecchi、Antonella Giorgi、Cristina Bellucci、Silvia Dei、Carla Ghelardini、Dina Manetti、M.Novella Romanelli、Elisabetta Teodori
DOI:10.1016/s0014-827x(98)00106-2
日期:1998.12
Several analogs of the alpha-tropanyl esters of 2-(4-chlorophenoxy)butyric acid (SM21) and 2-phenylthiobutyric acid (SM32), endowed with potent antinociceptive and cognition enhancing activity, were synthesized, aimed at obtaining more potent and safe drug candidates. Variation of the acyl moiety (4-11), as well as the conformational restriction of atropine to give the alpha-tropanyl ester of 2,3-
合成了具有强大的抗伤害感受和认知增强活性的2-(4-氯苯氧基)丁酸(SM21)和2-苯基硫代丁酸(SM32)的几种α-四氢呋喃酯类似物,旨在获得更有效和安全的药物候选人。酰基部分(4-11)的变化以及阿托品的构象限制,使得得到2,3-二氢苯并呋喃-3-羧酸的α-三甲基酯(18),实际上废除了活性。对于18,抗毒蕈碱活性也受到构象限制的严重影响。相反,苯氧基丁酸和苯硫代丁酸衍生物的构象限制为生成2,3-二氢-苯并呋喃-2-羧酸和2,3-二氢-苯并噻吩-2-羧酸的α-三苯甲基酯(12-17) ,提供了有效的止痛药,但其毒性太强,无法作为可靠的候选药物。还研究了一系列苯并呋喃-3-羧酸(20-27)和苯并噻吩-3-羧酸(28)的相关酯,发现它们是有效的但有毒的镇痛药。