Synthesis and Evaluation of Macrocyclic Transition State Analogue Inhibitors for α-Chymotrypsin
作者:Kristina K. Hansen、Benjamin Grosch、Sorana Greiveldinger-Poenaru、Paul A. Bartlett
DOI:10.1021/jo034837z
日期:2003.10.1
Lactams 1 and 2 are readily formed from acyclic precursors in the presence of trypsin and chymotrypsin, respectively, identifying the macrocyclic ring system as a potential motif for constrained transition state analogue inhibitors of the serine peptidases. Ketone 3 was synthesized and shown to be a modest inhibitor of chymotrypsin (K-i = 220 muM), albeit 4-fold more potent than the acyclic hydroxy acid 25 (K-i = 1.5 mM as a mixture of epimers). A precursor (31) to the amino boronic acid 4 was also prepared; although this derivative was a potent inhibitor of chymotrypsin (K-i = 130 nM) by virtue of the boronic acid moiety, it showed no advantage over the des-amino analogue 32 (K-i = 120 nM), which is not capable of cyclizing.
CORCORAN, ROBERT C.;GREEN, JENNIFER M., TETRAHEDRON LETT., 31,(1990) N7, C. 6827-6830
作者:CORCORAN, ROBERT C.、GREEN, JENNIFER M.
DOI:——
日期:——
Conversion of α-aminocarboxylic acids to α-aminophosphonic acids
作者:Robert C. Corcoran、Jennifer M. Green
DOI:10.1016/s0040-4039(00)97182-x
日期:1990.1
Naturally occurring α-amino acids may be converted to their phosphonate analogues in good yield by oxidative decarboxylation with leadtetraacetate, followed by reaction with (MeO)3P and TiCl4.