De novo asymmetric synthesis and biological analysis of the daumone pheromones in Caenorhabditis elegans and in the soybean cyst nematode Heterodera glycines
作者:Haibing Guo、James J. La Clair、Edward P. Masler、George A. O'Doherty、Yalan Xing
DOI:10.1016/j.tet.2016.03.033
日期:2016.5
The de novo asymmetric total syntheses of daumone 1, daumone 3 along with 5 new analogs are described. The key steps of our approach are: the diastereoselective palladium catalyzed glycosylation reaction; the Noyori reduction of 2-acetylfuran and an ynone, which introduce the absolute stereochemistry of the sugar and aglycon portion of daumone; and an Achmatowicz rearrangement, an epoxidation and a
描述了daumone 1,daumone 3以及5种新类似物的从头不对称总合成。我们方法的关键步骤是:非对映选择性钯催化的糖基化反应;2-乙酰呋喃和炔酮的诺约还原,引入了决明的糖和糖苷配基部分的绝对立体化学;然后进行Achmatowicz重排,环氧化和开环,以确保Daumone的其余不对称性。评估了合成的菊粉1和3以及相关类似物在秀丽隐杆线虫中的dauer活性以及对相关线虫H.甘氨酸孵化的影响。该数据提供了额外的结构活性关系(SAR),可进一步指导线虫信号的研究。