反应详情

The same reaction procedure as in Reference Example 12 was repeated except that (S)-2-[N-(2-methyl-2-propyloxycarbonyl)amino]hexanol used in Reference Example 12 was replaced by 14.33 g of (S)-2-[N-(2-methyl-2-propyloxycarbonyl) amino]propanol, whereby 6.95 g of the captioned (2RS,3S)-N-cyclopentyl-3-amino-2-hydroxybutanamide was obtained in a yield of 45%. 1H-NMR (CDCl3, δ): 1.05 (3/2H, d, J=7 Hz), 1.15 (3/2H, d, J=7 Hz), 1.35-1.50 (2H, m), 1.55-1.76 (4H, m), 1.90-2.10 (2H, m), 3.31-3.41 (1/2H, m), 3.48-3.52 (1/2H, m), 3.74 (1/2H, d, J=3 Hz), 3.87 (1/2H, d, J=5 Hz), 4.13-4.29 (1H, m), 7.18 (1/2H, d, J=8 Hz), 7.25 (1/2H, d, J=8 Hz).

1. customThe same reaction procedure as in Reference Example 12