(2S,3S,4S,5R,6S)-3,4,5-triacetoxy-6-((3-methyl-1-( (S)-1-propylpyrrolidin-3-yl)-6,7,8,9-tetrahydro-3H-pyrazolo[3,4-c]isoquinolin-5-yl)oxy)-tetrahydro-2H-pyran-2-carboxylic acid methyl ester 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
四氢呋喃 为溶剂,
反应 6.0h,
以63%的产率得到(2S,3R,4S)-3,4-diacetoxy-2-((3-methyl-1-((S)-propylpyrrolidin-3-yl)-6,7,8,9-tetrahydro-3H-pyrazolo[3,4-c]isoquinolin-5-yl)oxy)-3,4-dihydro-2H-pyran-6-carboxylic acid methyl ester