反応 #11222

反応方程式

alcohol

6-(2-Hydroxy-3-methoxypropyl)-9-methoxy-4-phenylpyrrolo[3,4-c]carbazole-1,3(2H,6H)-dione

→

phenol

収率 31.6%

6-(2,3-Dihydroxypropyl)-9-hydroxy-4-phenylpyrrolo[3,4-c]carbazole-1,3(2H,6H)-dione

収率 31.6%

溶媒

ethyl acetate hexane

反応条件

後処理

1. 1
   その他Crystallisation from ethyl acetate/hexane

実験手順

Demethylation of alcohol (225) (96 mg, 0.22 mmol) prepared as described in example 290 employing the procedure described in example 80 was followed by chromatography on silica eluting with ethyl acetate/hexane (4:1). Crystallisation from ethyl acetate/hexane gave phenol (226) (28 mg, 31%) as an orange/yellow powder, mp 290–295° C. 1H NMR δ [(CD3)2SO] 11.04 (br s, 1H), 9.30 (s, 1H), 8.40 (d, J=2.4 Hz, 1H), 7.79 (s, 1H), 7.63 (m, 2H), 7.55 (d, J=8.8 Hz, 1H), 7.47 (m, 3H), 7.11 (dd, J=8.8, 2.4 Hz, 1H), 5.00 (d, J=5.4 Hz, 1H), 4.86 (t, J=5.4 Hz, 1H), 4.51 (dd, J=3.8, 14.9 Hz, 1H), 4.35 (dd, J=7.5, 14.9 Hz, 1H), 3.89 (m, 1H), 3.41 (m, 2H). Found: C, 67.94; H, 4.69; N, 6.50. C23H18N2O5.1/4H2O requires: C, 67.89; H, 4.58; N, 6.88.

出典