(-)-(3S,5R)-3-(5'-methyl-2',4'-dioxo-3',4'-dihydro-2H-pyrimidin-1'-yl)-5-[dimethyl-(1,1,2-trimethylpropyl)-silanyloxymethyl]-cyclopent-1-enecarbaldehyde 、
乙氧甲酰基亚甲基三苯基膦 以
四氢呋喃 为溶剂,
反应 19.0h,
以99%的产率得到(+)-(3'S,5'R)-E-3-[5'-[dimethyl-(1,1,2-trimethyl-propyl)-silanyloxymethyl]-3'-(5"-methyl-2",4"-dioxo-3",4"-dihydro-2H-pyrimidin-1"-yl)-cyclopent-1'-enyl]-acrylic acid ethyl ester