Hydrochloric Acid → 3,4-di-O-nicotinoyl-N-carbobenzoxydopamine

反応式

[C:1]([NH:11][CH2:12][CH2:13][C:14]1[CH:21]=[CH:20][C:18]([OH:19])=[C:16]([OH:17])[CH:15]=1)([O:3][CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)=[O:2].Cl.[C:23](Cl)(=[O:30])[C:24]1[CH:29]=[CH:28][CH:27]=[N:26][CH:25]=1>N1C=CC=CC=1>[C:23]([O:17][C:16]1[CH:15]=[C:14]([CH:21]=[CH:20][C:18]=1[O:19][C:23](=[O:30])[C:24]1[CH:29]=[CH:28][CH:27]=[N:26][CH:25]=1)[CH2:13][CH2:12][NH:11][C:1]([O:3][CH2:4][C:5]1[CH:6]=[CH:7][CH:8]=[CH:9][CH:10]=1)=[O:2])(=[O:30])[C:24]1[CH:29]=[CH:28][CH:27]=[N:26][CH:25]=1

参加物

実験手順

19.0 g (66 mmol) of N-carbobenzoxydopamine obtained in Synthetic Example 1-(1) and 37.2 g (209 mmol) of hydrochloride of nicotinoyl chloride were added to 200 ml of pyridine. After stirring at room temperature for 12 hours, the mixture was allowed to react at 35°-40° C. for 2 hours. Then, the reaction mixture was poured into ice and a sodium carbonate solution followed by extraction with chloroform. The resulting extract was dried over anhydrous magnesium sulfate and the solvent was distilled off to obtain crude crystals. The thus-obtained crystals were recrystallized from ethyl acetate/diethyl ether (1:5 by volume) to obtain 23.5 g (yield: 71.6%) of the desired compound in the form of white crystals (m.p. 77°-78° C.).