| 摘要 |
New tetrapeptides having the formula A-Ser(benzyl)-Try(benzyl)-D-Ala-Leu-R1 wherein A is t-butoxycarbonyl, cyclohexylcarbonyl, benzyloxycarbonyl and p-nitrobenzyloxycarbonyl; Ser(benzyl) is D-Ser(benzyl) or L-Ser(benzyl); Tyr(benzyl) is D-Tyr(benzyl) or L-Tyr(benzyl); Leu is D-Leu or L-Leu, and R1 is lower alkoxy, hydrazino, amino, lower alkylamino or di(lower alkyl)amino.
|
