Diastereoselective reductive Amination of aryl trifluoromethyl ketones and α-amino esters

被引:51
作者
Hughes, Greg
Devine, Paul N.
Naber, John R.
O'Shea, Paul D.
Foster, Bruce S.
McKay, Daniel J.
Volante, R. P.
机构
[1] Merck Frosst Canada Inc, Proc Res, Kirkland, PQ H9H 3L1, Canada
[2] Merck & Co Inc, Merck Res Labs, Dept Proc Res, Rahway, NJ 07065 USA
关键词
amines; amino acids; diastereoselectivity; fluorine; reduction;
D O I
10.1002/anie.200603745
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
(Chemical Equation Presented) Reductionist art: Careful choice of the reducing agent in the reductive amination of trifluoromethyl ketones with α-amino esters allows stereoselective access, from the imine formed, to either the R,S or S,S diastereomers of the resulting amino acids. Whereas NaBH4 affords the R,S diastereomers, Zn(BH4)2 affords the S,S diastereomers (see scheme), which can be easily converted into potent cathepsin K inhibitors. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:1839 / 1842
页数:4
相关论文
共 41 条
[1]  
[Anonymous], 2004, GAUSSIAN03 REVISION
[2]   A CONVENIENT SYNTHESIS OF HINDERED AMINES AND ALPHA-TRIFLUOROMETHYLAMINES FROM KETONES [J].
BARNEY, CL ;
HUBER, EW ;
MCCARTHY, JR .
TETRAHEDRON LETTERS, 1990, 31 (39) :5547-5550
[3]  
BEGUE JP, 1995, CHEM SOC REV, V24, P562
[4]   Trifluoroethylamines as amide isosteres in inhibitors of cathepsin K [J].
Black, WC ;
Bayly, CI ;
Davis, DE ;
Desmarais, S ;
Falgueyret, JP ;
Léger, S ;
Li, CS ;
Massé, F ;
McKay, DJ ;
Palmer, JT ;
Percival, MD ;
Robichaud, J ;
Tsou, N ;
Zamboni, R .
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS, 2005, 15 (21) :4741-4744
[5]   PREPARATION AND PROPERTIES OF CHIRAL FLUOROORGANIC COMPOUNDS [J].
BRAVO, P ;
RESNATI, G .
TETRAHEDRON-ASYMMETRY, 1990, 1 (10) :661-692
[6]  
COREY EJ, 1998, ANGEW CHEM, V110, P2092
[7]  
Crousse B, 2001, SYNLETT, P679
[8]   Efficient asymmetric synthesis of α-trifluoromethyl-substituted primary amines via nucleophilic 1,2-addition to trifluoroacetaldehyde SAMP- or RAMP-hydrazone [J].
Enders, D ;
Funabiki, K .
ORGANIC LETTERS, 2001, 3 (10) :1575-1577
[9]  
FILLER R, 1993, BIOMEDICAL ASPECTS F
[10]   Nucleophilic reactions with α-trifluoromethyl imine and N,O-disubstituted aminal:: synthesis of β-trifluoromethyl β-anilino esters [J].
Gong, YF ;
Kato, K .
JOURNAL OF FLUORINE CHEMISTRY, 2001, 111 (01) :77-80