众所周知,景天庚酮糖在植物的一级和二级代谢(戊糖磷酸酯途径,光合作用的糖合成和莽草酸的生物合成)中起着重要的作用。在对鞣质的化学研究中作者从山茱萸叶分到一新的鞣质-1,7-二-O-棓酰-D-景天庚酮糖(1)以及已知的六个棓酰葡萄糖和五个鞣花鞣质。新化合物是根据光谱和化学数据确定的。这是具有以庚糖为中心的棓鞣质的第一个实例。新鲜叶(7kg)用80％含水丙酮室温提 It is known that sedoheptulose plays an important role in the primary and secondary metabolism of plants (pentose phosphate pathway, photosynthesis sugar synthesis and shikimic acid biosynthesis). In the chemical study of tannins, the authors assigned a new tannin-1,7-di-O-decanoyl-D-sedoheptulose (1) and six known decanoyl glucoses from hawthorn leaves. And five enamel flowers. New compounds are based on spectral and chemical data. This is the first example of tannins with heptose as the center. Fresh leaves (7kg) with 80% aqueous acetone at room temperature