1: in methanol
3 h; Molecular sieve;
2: With sodium cyanoborohydride; acetic acid in tetrahydrofuran
3: With methanol; sodium hydroxide; water in dichloromethane
2 h;
参考文献
Medivir AB
Patent: US2009/23758 A1, 2009 ;
Location in patent: Page/Page column 43 ;
