In order to find compounds having selective central nervous system (CNS) actions, various thyrotropin-releasing hormone (TRH) analogs in which the pyroglutamic acid residue is replaced by (3S)-1-oxo-1, 2, 3, 4-tetrahydroisoquinoline-3-carboxylic acid (Otc-OH) and related derivatives were prepared and their CNS actions were investigated in mice.Otc-His-Pro-NH2 (9a) showed 3.5-10 times stronger CNS actions than TRH (1). However, it was also 3-4 times more potent than TRH in thyrotropin (TSH)-releasing activity.
为了寻找具有选择性中枢神经系统 (CNS) 作用的化合物,合成了各种
促甲状腺激素释放激素 (TRH) 类似物,其中将
吡咯谷
氨酸残基替换为 (3S)-1-氧代-1, 2, 3, 4-四氢异
喹啉-3-羧酸 (Otc-OH) 及相关衍
生物,并在小鼠中研究了它们的 CNS 作用。Otc-His-Pro-NH2 (9a) 的 CNS 作用比 TRH (1) 强 3.5 到 10 倍。然而,在促甲状腺激素 (
TSH) 释放活性方面,它的效力比 TRH 强 3 到 4 倍。