A pharmaceutical composition comprising a peptide derivative or its pharmaceutical equivalent salt having a general formula, R
1
N═C(R
2
)-AA
1
-AA
2
-AA
3
-AA
4
-Y, in which R
1
is such as a hydrogen, R
2
is such as a methyl group, Y is such as a methylamino group, AA
1
is such as a tyrosine group, AA
2
is such as a D-arginine group, AA
3
is such as a phenylalanine group, and AA
4
is such as a N-methyllysine group has analgesic activity against a variety of pains on both subcutaneous and oral administration.
Stabilized Analogs of Thymopentin. 2. 1,2- and 3,4-Ketomethylene Pseudopeptides
作者:Joseph I. DeGraw、Ronald G. Almquist、Charles K. Hiebert、Amrit K. Judd、Linda Dousman、R. Lane Smith、William R. Waud、Itsuo Uchida
DOI:10.1021/jm9508043
日期:1997.7.1
In this second paper in a series of three studies of stable analogs of thymopentin (Arg1-Lys2-Asp3-Val4-Tyr5), the synthesis of analogs stabilized at peptide bonds 1,2 and 3,4 via insertion of ketomethylene units is described. A tris(carbobenzyloxy)arginyl(k)norleucine pseudopeptide was synthesized and coupled to Asp-Val-Phe-resin units followed by HF cleavage to prepare Arg(k)Nle-Asp-Val-Phe analogs