1: (i-Pr)2NEt / ethyl acetate / 2 h / 0 °C 2: NaOH / dimethylformamide / 5 h / 120 °C 3: NaH / dimethylformamide / Ambient temperature 4: NaOH / dimethylformamide / 5 h / 120 °C 5: NaH / dimethylformamide / Ambient temperature View Scheme
参考文献
Klunder, Janice M.; Hargrave, Karl D.; West, MaryAnn; Cullen, Ernest; Pal, Kollol; et al.
Journal of Medicinal Chemistry, 1992 , vol. 35, # 10 p. 1887 - 1897