5-Nitro-pyridine-2-sulfonic acid (3-{2-[5-(cyclopropyl-phenyl-methyl)-4-hydroxy-6-oxo-6H-pyran-2-yl]-butyl}-phenyl)-amide 在
palladium on activated charcoal
氢气 作用下,
以82%的产率得到5-Amino-pyridine-2-sulfonic acid (3-{2-[5-(cyclopropyl-phenyl-methyl)-4-hydroxy-6-oxo-6H-pyran-2-yl]-butyl}-phenyl)-amide