1: With hydrogenchloride; methanol; water Heating / reflux; 2: With methanol; potassium hydroxide; water Heating / reflux; 3: With hydrogenchloride; water in methanol T=20°C; pH=5;
参考文献
TIBOTEC PHARMACEUTICALS LTD.; MEDIVIR AB
Patent: WO2007/14926 A1, 2007 ;
Location in patent: Page/Page column 109 ;