1: With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine in DMF (N,N-dimethyl-formamide) 63 h; 2: With sodium hydroxide in water
参考文献
Eli Lilly and Company
Patent: US6777428 B1, 2004 ;
Location in patent: Page column 24-25 ;
US 6777428 B1