(R)-1-((5-azido-5,6,7,8-tetrahydronaphthalen-2-yl)methyl)piperidine 、
(R)-4-azido-3,4-dihydro-2H-chromene-7-carbaldehyde 以afforded (R)-1-((4-Azido-3,4-dihydro-2H-chromen-7-yl)methyl)piperidine (26)的产率得到(R)-1-((4-azido-3,4-dihydro-2H-chromen-7-yl)methyl)piperidine