1207853-21-1
1207853-23-3
化合物30d的制備:將(2S,5R)-5-氨基-2-甲基哌啶-1-羧酸芐基酯鹽酸鹽30c(20g,0.057mol)溶于HCl(g)/Et2O(4N,100mL)中,室溫下攪拌反應2小時。反應完成后,過濾混合物,得到(2S,5R)-5-氨基-2-甲基哌啶-1-羧酸芐酯鹽酸鹽30d,為白色固體(16g,收率73%)。產(chǎn)物經(jīng)1H NMR(400MHz,DMSO)表征:δppm1.097-1.080(d,3H),1.627-1.573(m,2H),1.849-1.749(m,2H),2.991-2.978(m,2H),4.158-4.139(d,1H),4.317-4.292(m,1H),5.072(s,2H),7.386-7.305(m,5H),8.392(s,3H)。
參考文獻:
[1] Patent: WO2010/16005, 2010, A1. Location in patent: Page/Page column 135-137