Condensation of 4-benzyloxy-3-methoxyanthranilic acid (3) with 5-iodo-1,2,3,4-tetramethoxybenzene (4) gave 6-benzyloxy-1,2,3,4,5-pentamethoxy-9-acridone (5), which was then converted into glyfoline (1) via N-methylation, selective de-O-methylation, and debenzylation. The synthetic glyfoline (1) is identical with an authentic sample isolated from plant.

中文翻译：

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甘氨酸的合成，甘氨酸是枸杞子的成分（Willd。）Lindl。和潜在的抗癌药

4-苄氧基-3- methoxyanthranilic酸（缩合3）与5-碘-1,2,3,4-四甲氧基苯（4），得到6-苄氧基1,2,3,4,5-五甲氧基-9-吖啶酮（5），其随后通过N-甲基化，选择性脱-O-甲基化和脱苄基作用转化为乙二醛（1）。合成的草甘膦（1）与从植物中分离出的真实样品完全相同。