flexible synthesis of the morpholine-spiroketal naturalproduct acortatarin A, isolated from the traditional Chinese medicine Acorus tatarinowii, is reported. The key step involves a Maillard-type condensation of an amine derived from d -mannitol with a dihydropyranone. The approach also enables access to analogues of acortatarin A for biological evaluation and can be applied to the synthesis of related
报道了从中药蒺藜中分离的吗啉-螺酮天然产物 acortatarin A 的简洁灵活的合成方法。关键步骤涉及衍生自 d-甘露醇的胺与二氢吡喃酮的美拉德型缩合。该方法还能够获得用于生物学评价的 acortatarin A 类似物,并可应用于相关 2-甲酰基吡咯天然产物的合成。