反应条件
1: 96 h / Ambient temperature 2: 1) NaOMe / 1) MeOH, 15 min, 2) MeOH, reflux, 14 h 3: 1) HCl, 2) K2CO3 / 1) EtOAc, r.t., 5 min, 2) MeOH, r.t., 12 h 4: NaBH4, glac. HOAc / dioxane / 22 h / Heating 5: HCl / ethyl acetate View Scheme
参考文献
Journal of Organic Chemistry, , vol. 57, # 15 p. 4215 - 4224