反应详情

A mixture of 227 (351 mg, 0.61 mmol), 5-[2-(dimethylamino)ethoxy]indole-2-carboxylic acid hydrochloride (225 mg, 0.79 mmol), EDCI (466 mg, 2.4 mmol) and TsOH (21 mg, 0.12 mmol) in DMA (3 mL) was stirred at room temperature for 3.5 h and then cooled to 0° C. Ice-cold aqueous NaHCO3 was added, and the resulting precipitate was filtered off, washed with aqueous NaHCO3 and water, and dried. Trituration with acetone gave di(tert-butyl) 2-({[1-(chloromethyl)-3-{5-[2-(dimethylamino)ethoxy]indol-2-carbonyl}-5-nitro-1,2-dihydro-3H-benzo[e]indol-7-yl]sulfonyl}amino)ethyl phosphate (229) (433 mg, 88%) as a yellow solid: mp 220-225° C. (dec.); 1H NMR [(CD3)2SO] δ 11.73 (s, 1H), 9.30 (s, 1H), 8.87 (d, J=1.7 Hz, 1H), 8.45 (d, J=8.9 Hz, 1H), 8.16 (br s, 1H), 8.02 (dd, J=8.9, 1.7 Hz, 1H), 7.42 (d, J=8.9 Hz, 1H), 7.22 (d, J=1.6 Hz, 1H), 7.18 (d, J=2.4 Hz, 1H), 6.96 (dd, J=−8.9, 2.4 Hz, 1H), 5.00-4.94 (m, 1H), 4.73 (dd, J=11.0, 2.4 Hz, 1H), 4.68-4.62 (m, 1H), 4.19-4.11 (m, 2H), 4.07 (t, J=5.9 Hz, 2H), 3.87-3.80 (m, 2H), 3.08-3.03 (m, 2H), 2.66 (t, J=5.9 Hz, 2H), 2.24 (s, 6H), 1.36 (s, 18H. Anal. (C36H47ClN5O10PS.½H2O) C, H, N.

1. temperaturecooled to 0° C
2. additionIce-cold aqueous NaHCO3 was added
3. filtrationthe resulting precipitate was filtered off
4. washwashed with aqueous NaHCO3 and water
5. customdried