反应条件
1: 94 percent / NH4OAc / acetonitrile / 15 h / Heating
2: NaBH4 / ethanol / 1 h / Ambient temperature
3: 1.) NaOMe, 2.) TiCl3, aq. NH4OAc / 1.) EtOH, RT, 5 min, 2.) EtOH, RT, 3 h
4: 89 percent / p-TsOH*H2O / methanol / 1 h / Heating
View Scheme
参考文献
Fuji; Muratake; Natsume
Chemical and Pharmaceutical Bulletin, 1992 , vol. 40, # 9 p. 2344 - 2352