Formal Convergent Synthesis of Ivermectin Aglycone - A Synthetic Approach to the C10-C25 Subunit of Avermectins 2b
作者:Jean-Pierre Férézou、Vivien Henryon
DOI:10.1055/s-0029-1216954
日期:2009.10
A convergent, two-fragment synthesis of the C10-C25 northern moiety of avermectins has been developed. Along with our previous work in this area, the present contribution represents a formal synthesis of Ivermectin aglycone. Furthermore, according to a strategy leading to non γ-pyranone adducts from the condensation reaction between acetylacetone dianion and convenient aldehydes, 23-hydroxylated C10-C25
已经开发了阿维菌素的C10-C25北部部分的会聚的两片段合成。连同我们先前在该领域的工作,目前的贡献代表了伊维菌素糖苷配基的正式合成。此外,根据从乙酰丙酮二阴离子和便利的醛之间的缩合反应中产生非γ-吡喃酮加合物的策略,制备了合成阿维菌素系列2b所需的23-羟基化的C10-C25北部结构单元。随后在温和的环化条件下获得了出乎意料的动力学上有利的非天然(21 S)-螺旋异构体。 抗生素-立体选择性合成-大环化合物-螺化合物-环化