Synthesis of thyrotropin-releasing hormone analogs. 2. Tripeptides structurally greatly different from TRH with high central nervous system activity
作者:Tamas Szirtes、Lajos Kisfaludy、Eva Palosi、Laszlo Szporny
DOI:10.1021/jm00159a015
日期:1986.9
from TRH. In spite of this fact, 7 of the 17 analogues (1, 2, 8-10, 16, and 17) have stronger anticataleptic effect than TRH, with negligible or no hormonal potency. The highest CNS activity was achieved when pyroglutamic acid was replaced by pyro-2-aminoadipic acid at the N-terminus [pAad-Leu-Pro-NH2, 1 (RGH 2202), and pAad-Nva-Pro-NH2,2]. A novel synthesis of L-2-aminoadipic acid suitable for large-scale
通过五氟苯基酯法合成了一系列新的促甲状腺激素释放激素(TRH)类似物,这些类似物是通过进一步修饰我们最有效的中枢神经系统(CNS)在两个末端刺激中性三肽而获得的,并测试了CNS和促甲状腺激素(TSH)释放活动。[Leu2]中的吡咯-2-氨基己二酸,2-氧代咪唑烷-4-羧酸或γ-丁内酯-γ-羧酸取代脯氨酸谷氨酸,脯氨酸由哌啶酸,噻唑烷-4-羧酸或高脯氨酸代替脯氨酸。 -和[Nva2] TRH导致三肽结构上与TRH大不相同。尽管如此,17种类似物中的7种(1、2、8-10、16和17)比TRH具有更强的抗感性作用,激素作用微乎其微或无。当焦谷氨酸在N端被焦-2-氨基己二酸取代时,CNS活性最高[pAad-Leu-Pro-NH2,1(RGH 2202)和pAad-Nva-Pro-NH2,2]。还描述了适用于大规模制备的L-2-氨基己二酸的新颖合成。