5-(4-Hydroxy-3,5-dimethoxy-phenyl)-6-(2-hydroxy-ethyl)-8-oxo-5,8-dihydro-[1,3]dioxolo[4,5-g]quinoline-7-carboxylic acid ethyl ester 在
sodium hydride 作用下,
以
四氢呋喃 为溶剂,
反应 3.0h,
以65%的产率得到5-(4-Hydroxy-3,5-dimethoxy-phenyl)-6,7-dihydro-5H-1,3,8-trioxa-5-aza-cyclopenta[b]anthracene-9,10-dione