| 摘要 |
The novel peptides of the formula I R-(X<1>)m-(X<2>)n-X<3>-X<4>-X<5>-X<6>-R<1> (I> are prepared by allowing a compound of the formula II R-Y<1>-OH (II> to react with a compound of the formula III H-Y<2>-R<1> (III> The substituents in the formulae have the meanings given in Claim 1. The peptides of the formula I exhibit a morphine action. |
