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.
已研究了将吡啶鎓聚氟化氢(奥拉试剂)产生的氟化氢添加到某些-2-氰基和-2-氨基氮丙啶上。
INHIBITORS OF IAP
申请人:Ndubaku Chudi
公开号:US20110046066A1
公开(公告)日:2011-02-24
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