反应 #58583

反应方程式

( 3 )

3-(2(R)-cyclopentylmethyl-3(S)-hydroxyl-5-phenyl-1-oxopentyl)-4(R)-(phenylmethyl)-2-oxazolidinone

3-(3,5-difluorophenyl)propanal

( 2 )

2(R)-cyclopropylmethyl-5-(3,5-difluorophenyl)-3-(S)-hydroxypentanoic acid (2-oxo-1-(3-phenoxybenzyl)azapan-3-(S)-yl)amide

trans-3,5-difluorocinnamic acid

( 1 )

(R)-4-(phenylmethyl)-2-oxazolidinone

3-(3,5-difluorophenyl)propionic acid

→

3-(2-(R)-cyclopropylmethyl-5-(3,5-difluorophenyl)-3(S)-hydroxyl-1-oxopentyl)amino-1-methyl-5-(pyridin-2-yl)-2,3-dihydro-1H-1,4-benzodiazepin-2-one

反应条件

实验过程

The 3-(3,5-difluorophenyl)propanal used in the aldol reaction was prepared from trans-3,5-difluorocinnamic acid by: (1) hydrogenation to 3-(3,5-difluorophenyl)propionic acid (L. Kruse et al J. Med. Chem. 1987, 30, 486-494); (2) formation of Weinreb amide (M. Braun Synthesis 1989, 856); and (3) reduction to aldehyde (D. A. Evans J. Org. Chem. 1993, 58, 2446-2453).

来源