7-(羟基甲基)-4-甲氧基-5H-呋喃并[3,2-g][1]苯并吡喃-5-酮

4-methoxy-7-(toluene-4-sulfonyloximethyl)-furo[3,2-g]chromen-5-one

1-(6-hydroxy-4-methoxy-7-(methylthio)benzofuran-5-yl)ethanone

1-(6-ethoxy-4-methoxy-7-(methylthio)benzofuran-5-yl)ethanone

4-allyloxy-2-hydroxy-3-iodo-6-methoxyacetophenone