Conformation and structure of acidic dipeptides
β Scribed by EGGLESTON, DRAKE S. ;HODGSON, DEREK J.
- Book ID
- 115098068
- Publisher
- Wiley (Blackwell Publishing)
- Year
- 2009
- Tongue
- English
- Weight
- 467 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0367-8377
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The results of X-ray diffraction analyses on two m-aminoisobutyric acid (Aibl derivativcs, methyl u-(acetylamino)isobuknoate (Ac-Aib-OMc. I ) and bcnzyl a-[(beazyloxycarbonyl)arnino]isobutanoate (2-Aib-OBA, 2), and two terminally blocked, Aib-conlining dipcptides, methyl cr-[(acctyl-~-alanyl)nmino]i
The amide bond in L,L-and L,m-chloropropionylalanine methyl ester is shown to be trans by molar polarization and infrared spectroscopy. In these dipeptide diastereoisomer analogues, therefore, differences in physical properties, i.e., melting points, crystalline forms, gas chromatographic mobilities