us compare the C-C bonds in butadiene (8, Frame 21), and acrolein (9, Frame 22). The illustrations present ELF values in a plane lying 1 Bohr above the plane of the nuclei and intersecting the x-bonding region, and show that the x component of the C-C bond is larger in 9 than it is in 8. H, 3 H, ,H
Synthesis and properties of the first all-aza analogue of a biologically active peptide
✍ Scribed by Prof. Dr. Joachim Gante; Michael Krug; Günter Lauterbach; Reinhard Weitzel; W. Hiller
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 370 KB
- Volume
- 1
- Category
- Article
- ISSN
- 1075-2617
No coin nor oath required. For personal study only.
✦ Synopsis
The synthesis of the first all-aza-amino acid analogue (2) of a peptidic renin inhibitor is described. The X-ray structural analysis and molecular modelling investigations of this novel compound reveal interesting conformational features which have a significant impact on its biological activity. In addition, insight into conformational features of azapeptides in general in comparison with the corresponding purely peptidic compounds is given.
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## Abstract Four new aza‐analogues of hormaomycin **1**, a secondary metabolite with interesting biological activities produced by __Streptomyces griseoflavus__, were synthesized and subjected to preliminary tests of their antibiotic activity to provide new insights into the structure–activity rela