Reaction of hydrogen fluoride in pyridine solution with -cyano-2 and -amido-2-aziridines. Preparation of β-fluoro α-amino acids and esters by means of acidic hydrolysis and alcoholysis of β-fluoro-α-aminonitriles and/or β-fluoro-α-amino acid amides
作者:Ayicoué Ayi、Roger Guedj
DOI:10.1016/s0022-1139(00)85554-2
日期:1983.11
The addition of hydrogen fluoride generated from pyridinium poly(hydrogen fluoride) ( Olah's reagent) to some -2-cyano and -2-amido aziridines has been examined.
The invention provides novel inhibitors of IAP that are useful as therapeutic agents for treating malignancies where the compounds have the general formula (I), and G, X
1
, X
2
, R
1
, R
2
, R
3
, R
4
, R
4
′, R
5
, R
a
, R
b
, and R
c
are as described herein.
Es werden Synthesen von DL-γ.γ′-Difluor-valin (6), DL-δ.δ′-Difluor-leucin (13) und DL-γ-Fluor-(allo)threonin (18) beschrieben. Die Darstellungen der bereits bekannten DL-2-Amino-4-fluor-buttersäure (21) und des DL-β-Fluor-alanins (27) sind verbessert worden. Das Dipeptid DL-β-Fluor-alanyl-L-leucin (30) wird dargestellt.
Kinetic aspects involved in the simultaneous enzymatic synthesis of (S)-3-fluoroalanine and (R)-3-fluorolactic acid
作者:Luciana P.B. Gonçalves、O.A.C. Antunes、Gerson F. Pinto、Enrique G. Oestreicher
DOI:10.1016/j.jfluchem.2003.08.009
日期:2003.12
enzymatic system for the simultaneous synthesis of (S)-3-fluoroalanine (1a) and (R)-3-fluorolactic acid (3) with l-ALADH and l-lactate dehydrogenaseusing rac-1 and NAD+. Analysis of isolated products revealed 1a in 60% yield and 86% ee and 3 in 80% yield and over 99% ee. Compounds 1a and 3 represent chiral building blocks for the synthesis of several products with pharmacological activity. The presence