C[O:2][C:3](=[O:14])[CH2:4][S:5]([N:8]1[CH2:13][CH2:12][O:11][CH2:10][CH2:9]1)(=[O:7])=[O:6]>C1CCCCC1.C(OCC)(=O)C>[N:8]1([S:5]([CH2:4][C:3]([OH:14])=[O:2])(=[O:7])=[O:6])[CH2:9][CH2:10][O:11][CH2:12][CH2:13]1(Morpholine-4-sulfonyl)acetic acid methyl ester (0.5 g, 2.24 mmol) is dissolved in 0.66 N KOH aqueous ethanol solution (1/1, 150 mL) and the mixture is heated at reflux during 16 h. The solvent is evaporated and residue is extracted with dichloromethane/methanol 4:1 to yield the title compound.
Wird geladen…