(S)-3-amino-3-methylpiperidine-2,6-dione hydrobromide 、
3-[(t-butoxycarbonyl-methyl-amino)-methyl]-phthalic acid 在
吡啶 作用下,
以31%的产率得到methyl-[2-((S)-3-methyl-2,6-dioxo-piperidin-3-yl)-1,3-dioxo-2,3-dihydro-1H-isoindol-4-ylmethyl]-carbamic acid tert-butyl ester