N'-hydroxy-2-(methylsulfonyl)-1,2,3,4-tetrahydroisoquinoline-6-carboximidamide 、
1-叔丁氧羰基-4-哌啶乙酸 以to afford the title compound (Example 61)的产率得到tert-butyl 4-((3-(2-(methylsulfonyl)-1,2,3,4-tetrahydroisoquinolin-6-yl)-1,2,4-oxadiazol-5-yl)methyl)piperidine-1-carboxylate