(1R,3R)-(N-benzyl-1,3-dimethyl-1,2,3,4-tetrahydroisoquinolin-8-O-yl) 1'-bromo-5'-isopropoxy-4'-methoxy-2'-naphthoate 在
bis-triphenylphosphine-palladium(II) chloride 、
sodium acetate 作用下,
以
N,N-二甲基乙酰胺 为溶剂,
以92%的产率得到N-benzyl-5'-O-isopropyldioncolactone A