## Abstract The syntheses of seven [D‐ala‐^2^]‐enkephalin analogues, H‐Tyr‐ala‐Gly‐X‐Y, with X‐Y = Phe‐Ada‐OH, Phe‐ada‐OH, Phe‐Ada‐NH~2~, Phe‐ada‐NH~2~, Ada‐Leu‐OH, Ada‐Leu‐NH~2~, and Ada‐Ada‐NH~2~ are described. The compounds with Y = Ada (= L‐Ada) or ada (= D‐Ada) show pronounced morphine‐like ac
Synthesis and Biological Properties of Enkephalin-like Peptides Containing Carboranylalanine in Place of Phenylalanine
✍ Scribed by Robert Schwyzer; Kim Quang Do; Alex N. Eberle; Jean-Luc Fauchére
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- German
- Weight
- 421 KB
- Volume
- 64
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
The syntheses of [D‐Ala^2^, Car^4^, Leu^5^]‐enkephalin, its amide, and of [D‐Ala^2^, Car^4^, Met^5^]‐enkephalin amide are described in detail. The three compounds show pronounced morphine‐like potencies in certain bio‐assays, and were used to investigate the influence of electronic, steric and hydrophobic properties of the side‐chains of amino acids no. 4 and 5 on opioid activity (see [13]).
📜 SIMILAR VOLUMES
## Abstract Five pentapeptides with the amino acid sequence L‐tyrosyl‐D‐alanyl‐glycyl‐L‐__p__‐nitrophenylalanyl‐X, wherein X = L‐leucine, L‐leucine amide, L‐methionine amide, L‐1‐adamantylalanine amide, and L‐neopentylglycine amide were prepared by chemical synthesis in solution and characterized c
## Abstract Converging data obtained in biochemical and pharmacological bioassays for opiate activity are presented for five new enkephalin‐like peptides. The main structural features of the analogues, the synthesis of which is described in detail, were the presence of D‐alanine or D‐serine in posi