(1R,5S)-1,3,3-trimethyl-6-[[(1R,5S)-1,3,3-trimethyl-6-azabicyclo[3.2.1]octan-6-yl]methyl]-6-azabicyclo[3.2.1]octane 、
3-(2-benzothiazolyl)-7-hydroxy-5-ethylchromone 以
1,4-二氧六环 为溶剂,
以84%的产率得到3-(1,3-benzothiazol-2-yl)-6-ethyl-7-hydroxy-8-[(1,3,3-trimethyl-6-azabicyclo[3.2.1]oct-6-yl)methyl]-4H-chromen-4-one