Ring-deactivated hydroxyalkylpyrrole-based inhibitors of α-chymotrypsin: synthesis and mechanism of action
作者:Derek C. Martyn、Andrea J. Vernall、Bruce M. Clark、Andrew D. Abell
DOI:10.1039/b302411c
日期:——
13C NMR and mass spectrometry studies have been used to demonstrate that the inhibition of α-chymotrypsin by N-sulfonylhydroxymethylpyrrole inhibitors (10) is non-covalent. Hydroxyalkylpyrroles in which an electron-withdrawing group (acyl substituent) is introduced at the alternative C2 position have been synthesised and also shown to inactivate α-chymotrypsin. SAR studies on this class suggests that the incorporation of phenylalanine at C2 is favoured, however, there is little gain in introducing a hydrophobic substituent at C5.
An amino acid N-derivatising group that can be coloured on demand
作者:Andrew D. Abell、Derek C. Martyn、Barnaby C.H. May、Brent K. Nabbs
DOI:10.1016/s0040-4039(02)00625-1
日期:2002.5
A method is presented whereby an amino acid is reacted with 5-formyl-1H-pyrrole-2-carboxylic acid to give an N-derivatised tag that has a latent ability to be coloured. A characteristic red pyrrolizin-3-one (coloured tag) is then revealed on treatment with hydrocinnamoyl chloride. This sequence has been carried out on amino acids in solution, and on solid phase, and also on dipeptides.