反应条件
1: tetrahydrofuran / 0.75 h / -78 °C
2: 1.) Ac2O / 1.) 150 deg C, 2 h, 2.) t-BuOH, 10 deg C, 30 min; 45 deg C, overnoght
3: t-BuOK / 2-methyl-propan-2-ol / 18 h / 50 °C
4: HCl / acetic acid / 2 h / 100 °C
5: 87 percent / DBU / acetonitrile / 1.) reflux, 2.5 h, 2.) room temperature, overnight
View Scheme
参考文献
Domagala, John M.; Heifetz, Carl L.; Hutt, Marland P.; Mich, Thomas F.; Nichols, Jeffry B.; et al.
Journal of Medicinal Chemistry, 1988 , vol. 31, # 5 p. 991 - 1001
