๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Conformation of a diastereoisomeric pair of enkephalin analogues: A 400 MHz 1H NMR study

โœ Scribed by S. Bajusz; A. F. Casy


Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
382 KB
Volume
22
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.


๐Ÿ“œ SIMILAR VOLUMES


Structureโ€“Activity relationship of tetra
โœ M. A. Castiglione-Morelli; T. Tancredi; E. Trivellone; G. Balboni; M. Marastoni; ๐Ÿ“‚ Article ๐Ÿ“… 1988 ๐Ÿ› Wiley (John Wiley & Sons) ๐ŸŒ English โš– 551 KB

Several tetrapeptide analogs of dermorphin have been studied by means of 'H-nmr spectroscopy at 500 MHz in DMSO-d,. In spite of the unfavorable properties of the solvent, it is possible to extract key structural information that, combined with the biological activity of the peptides, yields a struct

The dynamic stereochemistry of dimesityl
โœ R. Willem; C. Hoogzand ๐Ÿ“‚ Article ๐Ÿ“… 1979 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 448 KB

## Abstract The spectral behaviour of dimesitylโ€2,4,6โ€trimethoxyphenylmethane (1) was examined by ^1^H NMR spectroscopy at 270 MHz in order to resolve an isochrony of resonances observed in the low temperature spectra of 1 at 60 MHz. At 270 MHz the spectra of 1 exhibit well resolved __o__โ€methyl re

A 1H and 13C NMR conformational study of
โœ K. Pihlaja; J. Mattinen; E. Kleinpeter; R. Meusinger; Ch. Duscheck; R. Borsdorf ๐Ÿ“‚ Article ๐Ÿ“… 1985 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 426 KB

The 'H and the noise-decoupled =C NMR spectra of isochromane and 13 of its methyl-substituted derivatives were recorded and analysed. The collected data were used to assign the configurations and to determine the position of the conformational equilibria based on the vicinal ' I 3 coupling constants

Diastereoisomerism of thiol complexes of
โœ John S. Edmonds; Takashi Nakayama; Takuya Kondo; Masatoshi Morita ๐Ÿ“‚ Article ๐Ÿ“… 2006 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 339 KB

Diastereoisomeric complexes of methylphenylarsinic acid and (L)-glutathione could be partially separated by HPLC, but the separated compounds rapidly racemized, presumably by pyramidal inversion at the arsenic atom. Hydrolysis of the diastereoisomeric complexes yielded methylphenylarsinous acid as a

Trifluoroacetic anhydride. A convenient
โœ M. Ranganathan; P. Balaram ๐Ÿ“‚ Article ๐Ÿ“… 1980 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 237 KB

## Abstract The use of trifluoroacetic anhydride as an NMR solvent for sugars has been explored. Dissolution of carbohydrates in this solvent is accompanied by trifluoroacetylation at the hydroxyl groups. Esterification results in downfield shifts of the sugar protons yielding very well resolved ^1