[CH2:1]([O:15][C:16]1[CH:21]=[CH:20][C:19]([N+:22]([O-])=O)=[CH:18][CH:17]=1)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH3:14]>C(O)C.C(OCC)(=O)C.[Pd]>[CH2:1]([O:15][C:16]1[CH:21]=[CH:20][C:19]([NH2:22])=[CH:18][CH:17]=1)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH3:14]A solution of 30 g of product from Example 81 in 150 ml of ethyl alcohol and 20 ml of ethyl acetate is treated with 2 g of 10% palladium/carbon in a Parr Hydrogenator for 18 hours. The reaction solution is filtered and concentrated in vacuo. The residue is recrystallized from hexane to give 25.7 g of the desired product as a white solid.
Wird geladen…