1,5-Rhodium Shift in Rearrangement ofN-Arenesulfonylazetidin-3-ols into Benzosultams
摘要:
Benzosultams are synthesized in an enantiopure form starting from alpha-amino acids through a rhodium-catalyzed rearrangement reaction of N-arenesulfonylazetidin-3-ols. Mechanistically, this reaction involves C-C bond cleavage by beta-carbon elimination and C-H bond cleavage by a 1,5-rhodium shift.
Use of simple stable labelled intermediates to produce complex isotopically labelled internal standards
作者:Paul Allen、Mike Hickey、Lee Kingston、Andrew Mather、David J. Wilkinson
DOI:10.1002/jlcr.1293
日期:2007.4
Motion at the active site of tosylchymotrypsin
作者:M. E. Ando、J. T. Gerig、E. F. Weigand
DOI:10.1021/ja00375a040
日期:1982.6
Substitution at tricoordinate sulfur(IV). Rearrangement of sulfinanilides to anilino sulfoxides
作者:Kenneth K. Andersen、Olaf Malver
DOI:10.1021/jo00173a005
日期:1983.12
Examination of the structure and dynamics of tosylchymotrypsin at pH 4 by tritium NMR spectroscopy
作者:T. M. O'Connell、J. T. Gerig、P. G. Williams
DOI:10.1021/ja00061a002
日期:1993.4
Tritium NMR spectroscopy of specifically tritiated and tritiated/deuterated derivatives of tosylchymotrypsin has been used to examine the properties of the tosyl group in this protein. The presence of several tritiated isotopomers complicates analysis of experiments and extensive computer simulations of the composite relaxation behavior of the collection of tritiated species present were used in conjunction with models developed from crystallographic results to interpret the observations made. These analyses suggest that the tosyl group of tosylchymotrypsin at pH 4 is highly mobile in solution and, on average, only occupies the location in the protein that is observed in the solid state about 50% of the time.