The syntheses of a tridecapeptide corresponding to the amino acid sequence of dynorphin [1-13], H-Tyr-Gly-Gly-Phe-Leu-Arg-Arg-Ile-Arg-Pro-Lys-Leu-Lys-OH, and related truncated peptides, [4-13], [8-11], and [8-13], using the 4-methoxy-2, 6-dimethylbenzenesulfonyl (Mds) group for the protection of the guanidino function of arginine, are described. To synthesize dynorphin [1-13], three fragments, 1-3, 4-10, and 11-13, were prepared and used as building blocks for the final construction of the amino acid sequence of this peptide. Final deprotection of the fully protected peptide was achieved by treatment with trifluoroacetic acid-thioanisole at 50°C for 2 h and the purification of this synthetic peptide was effected by column chromatography on CM-cellulose. Other truncated peptides, [4-13], [8-11], and [8-13], were synthesized in the same manner as described for dynorphin [1-13]. The applicability of the Mds protecting group for the synthesis of arginine-containing peptides was confirmed.
报道了采用4-甲氧基-2,6-二甲基苯磺酰基(Mds)保护精
氨酸
胍基功能合成与强
啡肽[1-13]
氨基酸序列相对应的十三肽H-Tyr-Gly-Gly-Phe-Leu-Arg-Arg-Ile-Arg-Pro-Lys-Leu-Lys-OH及相关截短肽[4-13]、[8-11]和[8-13]的方法。为合成强
啡肽[1-13],制备了三个片段1-3、4-10和11-13,并将其作为构建该肽
氨基酸序列的模块。通过在50°C下用
三氟乙酸-
硫代
茴香醚处理2小时来实现完全保护肽的最终脱保护,并且通过CM-
纤维素柱色谱纯化这种合成肽。其他截短肽[4-13]、[8-11]和[8-13]以与强
啡肽[1-13]相同的方式合成。Mds保护基团适用于含有精
氨酸的肽的合成这一应用得到了确认。