抄録
It was found that γ-irigermanal, obtained from the methanol extract of root of Iris germanica, exhibited a potent antiulcer activity. Therefore, this compound was selected as a lead-compound, and related compounds were synthesized and tested for antiulcer activities. It was found that (±) ethyl 2-[2-(3-hydroxypropyl)-4-oxocyclohexylidene]-propionate (1) had excellent antiulcer activities. Then phenylpropanol derivatives, obtained by changing from cyclohexane ring of 1 to benzene ring, were synthesized and tested for antiulcer activities in order to study structure-activity relationships. As a result, (±) ethyl 2-[2-(3-hydroxypropyl)-4, 5-dimethoxyphenyl] propionate (2b) and (±) 3-[2-(3-hydroxypropyl)-4, 5-dimethoxyphenyl]-2-butanone (5) were shown to have antiulcer activities.
