クロウメモドキ樹皮成分の研究 : (第12報)ソリゲニン類緑物質の合成
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As a step to synthesize α- and β-sorigenin, the aglycons of the glycosides in the bark of Rhamnus japonica (Fig. 1), two analogous compounds, i. e. lactone of 3-hydroxymethyl-2-naphthoic acid and lactone of 4-hydroxy-3-hydroxymethyl-2-naphthoic acid, were synthesized from 2, 3-naph-thalene-dicarboxylic acid anhydride and 4-hydroxy-2-naphthoic acid, respectively.