20-Ethyl-20-hydroxy-14,18-dioxo-17-oxa-3,13-diazapentacyclo[11.9.0.02,11.04,9.015,21]docosa-1(22),2,4,6,8,10,15(21)-heptaene-10-carbaldehyde 、
[(3-fluorophenyl)methylene]triphenylphosphorane 在
4-二甲氨基吡啶 作用下,
以
氯仿 为溶剂,
反应 5.0h,
以34%的产率得到5-ethyl-12-[2-(3-fluorophenyl)ethenyl]-1,4,5,13-tetrahydro-5-hydroxy-3H,15H-oxepino[3',4':6,7]indolizino[1,2-b]quinoline-3,15-dione