Synthesis of the Selective 5-Hydroxytryptamine 4 (5-HT4) Receptor Agonist (+)-(S)-2-Chloro-5-methoxy-4-(5-(2-piperidylmethyl)-1,2,4-oxadiazol-3-yl)aniline.
作者:Takeshi SUZUKI、Kiyoshi IWAOKA、Naoki IMANISHI、Yukinori NAGAKURA、Kenji MIYATA、Hideaki NAKAHARA、Mitsuaki OHTA、Toshiyasu MASE
DOI:10.1248/cpb.47.120
日期:——
In a search for novel 5-hydroxytryptamine 4 (5-HT4) agonists focusing on the linker group of benzamide derivatives, 2-chloro-5-methoxy-4-[5-(2-piperidylmethyl)-1, 2, 4-oxadiazol-3-yl]aniline (2) was prepared and its optical isomers were separated. The S isomer 2(S) showed high affinity for the human 5-HT4 receptor without affinity for the human 5-HT3 receptor, and potent 5-HT4 agonistic activity in longitudinal muscle myenteric plexus (LMMP) preparations of guinea pig ileum. The R isomer 2(R) showed opposite selectivity. As a result of other receptor binding studies, 2(S) (YM-53389) was shown to be a highly selective 5-HT4 agonist.
在寻找新型 5-羟色胺 4(5-HT4)激动剂的过程中,重点研究了苯甲酰胺衍生物的连接基团,制备了 2-氯-5-甲氧基-4-[5-(2-哌啶基甲基)-1, 2, 4-恶二唑-3-基]苯胺(2),并分离了其光学异构体。S 异构体 2(S) 对人类 5-HT4 受体表现出很高的亲和力,而对人类 5-HT3 受体没有亲和力,在豚鼠回肠纵肌肠管丛(LMMP)制备物中具有很强的 5-HT4 激动活性。R 异构体 2(R) 则表现出相反的选择性。其他受体结合研究表明,2(S) (YM-53389) 是一种高选择性 5-HT4 激动剂。