作者:Hong-Se Oh、Han-Young Kang
DOI:10.1016/j.tet.2010.04.039
日期:2010.6
d-(+)-lactate and d-glucose, for neomethynolide, and for novamethynolide, respectively. The key steps in synthesis of neomethynolide and novamethynolide, which are aglycones for neomethymycin and novamethymycin, respectively, were asymmetric aldol reactions, Yamaguchi esterification, and ring-closing metathesis using Grubbs’ second generation catalyst. Finally, the coupling of agylcones with the corresponding
已经实现了新甲霉素和新甲霉素的全合成。这两个大环内酯类含有12元大内酯作为糖苷配基,属于抗生素的间霉素家族,出现在吡咯霉素的生物合成途径中。通过从d -(+)-乳酸甲酯和d开始合成12元大内酯中导致新霉素和新霉素发生结构差异的部分-葡萄糖分别用于新甲氧苄啶和新甲氧苄啶。分别是新甲霉素和新甲霉素的糖苷配基的新甲氧嘧啶和新甲氧嘧啶的合成关键步骤是不对称醛醇缩合反应,山口酯化和使用格鲁布斯第二代催化剂进行的闭环复分解。最后,将戊二烯酮与相应的三氯乙酰亚氨酸酯偶联,然后脱保护,完成了这两种大环内酯类抗生素的总合成。