1: 7-benzyl-1,3,7-trihydropurine-2,6-dione With potassium carbonate in N,N-dimethyl-formamide T=40°C; 0.5 h; 2: 1-iodo-butane in N,N-dimethyl-formamide T=40°C;
参考文献
SMITHKLINE BEECHAM CORPORATION
Patent: WO2007/17265 A1, 2007 ;
Location in patent: Page/Page column 37 ;
WO 2007/017265 A1
