作者:Hans Jürgen Bestmann、Wilfried Kellermann
DOI:10.1055/s-1994-25676
日期:——
The three macrolides 1, 2 and 3 isolated from galbanum resin were synthesized starting from Ï-bromoacetals 9. The key step is the buffered intramolecular Wittig reaction of the ylides 14 and 23 to afford the α,β-unsaturated lactones 15, 16 and 24. Hydrogenation of these lactones gives the title macrolides in (R)-configuration.
从格巴胶树脂中分离出的三种大环内酯1、2和3,是以α-溴缩醛9为起始物进行合成的。关键步骤是亚甲基腾内镉14和23的缓冲内分子Wittig反应,生成α,β-不饱和内酯15、16和24。这些内酯的氢化反应得到了(R)-构型的目标大环内酯。