4-{2-[2-methyl-4-((2S,3'S)-2-methyl-[1,3']bipyrrolidinyl-1'-yl)-phenylamino]-ethyl}-tetrahydro-pyran-4-carboxylic acid methyl ester 在
potassium tert-butylate 作用下,
以
四氢呋喃 为溶剂,
以85%的产率得到2-[2-methyl-4-((2S,3'S)-2-methyl-[1,3']bipyrrolidinyl-1'-yl)-phenyl]-8-oxa-2-aza-spiro[4.5]decan-1-one