8alpha-(3,3-Diethylureido)-6-methylergoline-2-carboxylic acid benzyl ester → 8alpha-(3,3-Diethylureido)-6-methylergoline-2-carboxylic acid
Reaction equation
C([O:8][C:9]([C:11]1[NH:25][C:24]2[C:26]3[C:12]=1[CH2:13][C@@H:14]1[C@@H:19]([C:20]=3[CH:21]=[CH:22][CH:23]=2)[CH2:18][C@H:17]([NH:27][C:28]([N:30]([CH2:33][CH3:34])[CH2:31][CH3:32])=[O:29])[CH2:16][N:15]1[CH3:35])=[O:10])C1C=CC=CC=1>CO.[Pd]>[CH2:33]([N:30]([CH2:31][CH3:32])[C:28](=[O:29])[NH:27][C@H:17]1[CH2:18][C@H:19]2[C@@H:14]([CH2:13][C:12]3[C:26]4[C:24](=[CH:23][CH:22]=[CH:21][C:20]2=4)[NH:25][C:11]=3[C:9]([OH:10])=[O:8])[N:15]([CH3:35])[CH2:16]1)[CH3:34]Participants
4
Procedure
104 mg (0.22 mmol) of 8α-(3,3-diethylureido)-6-methylergoline-2-carboxylic acid benzyl ester is dissolved in 20 ml of methanol and, after adding 50 mg of palladium black, hydrogenated for 30 minutes under normal pressure at room temperature. After the catalyst has been filtered off and the mixture concentrated, 8α-(3,3-diethylureido)-6-methylergoline-2-carboxylic acid is obtained in a 100% yield, mp: decomposition starting with 230° C.