3-(2-oxa-6-azaspiro[3.3]heptan-6-yl)-1-oxa-8-azaspiro[4.5]decane bis(trifluoroacetic acid) salt 、
5-chloro-6-methoxy-3-pyridinesulfonyl chloride 在
N,N-二异丙基乙胺 作用下,
以
乙腈 为溶剂,
以17 %的产率得到8-((5-chloro-6-methoxypyridin-3-yl)sulfonyl)-3-(2-oxa-6-azaspiro[3.3]heptan-6-yl)-1-oxa-8-azaspiro[4.5]decane