9-甲氧基-2,3-二氢-7H-呋喃并[3,2-g]苯并吡喃-7-酮

9-methoxy-4-nitrofuro[3,2-g]chromene-7-thione

8-羟基佛手苷内酯

9-甲氧基呋喃并[3,2-g]苯并吡喃-7-硫酮

2-bromo-4,6-dihydroxy-5-methoxybenzene-1,3-dicarbaldehyde