Analgesic dipeptide derivatives. 4. Linear and cyclic analogs of the analgesic compounds arginyl-2-[(o-nitrophenyl)sulfenyl]tryptophan and lysyl-2-[(o-nitrophenyl)sulfenyl]tryptophan
作者:M. Teresa Garcia-Lopez、Rosario Gonzalez-Muniz、M. Teresa Molinero、Joaquin Del Rio
DOI:10.1021/jm00397a004
日期:1988.2
syntheses of Trp(Nps)-Arg-OMe.HCl (15) [Trp(Nps) = 2-[(o-nitrophenyl)sulfenyl]tryptophan], its three stereoisomers, and their corresponding cyclic analogues are reported. The preparation of Trp(Nps)-Lys-OMe (19) and its cyclic analogue is also described. All these compounds have been designed as analogues of the analgesic dipeptide derivatives X-Trp(Nps)-OMe (1b, X = Arg; 2b, X = Lys). In the case of
报告了Trp(Nps)-Arg-OMe.HCl(15)[Trp(Nps)= 2-[((邻硝基苯基)亚磺酰基]色氨酸],其三种立体异构体及其相应的环状类似物的合成。还描述了Trp(Nps)-Lys-OMe(19)及其环状类似物的制备。所有这些化合物均已设计为镇痛性二肽衍生物X-Trp(Nps)-OMe的类似物(1b,X = Arg; 2b,X = Lys)。在含有Arg或D-Arg的二肽的情况下,通过氯甲酸异丁酯和N-甲基吗啉介导的混合酸酐法实现偶联反应,而在Lys类似物的情况下,使用N,N-二环己基碳二亚胺法。用Nps-Cl在酸性介质中进行亚磺酰化反应。通过使用乙酸作为催化剂,环化成二酮哌嗪。icv给药后,在小鼠中评估了所有这些新的含Trp(Nps)的二肽的抗伤害作用,并将其与1b,2b,Tyr-Arg(Kyotorphin)和Tyr-D-Arg进行了比较。发现活性最高的化合物15和19表