A convenient approach to total synthesis of synargentolide-B from l-ascorbic acid and d-ribose
作者:Saidulu Konda、K. Bhaskar、Lingaiah Nagarapu、Dattatray M. Akkewar
DOI:10.1016/j.tetlet.2014.03.133
日期:2014.5
A convenient and practical approach for the total synthesis of naturally occurring lactone synargentolide-B has been accomplished in 14 steps from the commercially available l-ascorbic acid and d-ribose involving Bestmann–Ohira reaction, zinc mediated allylation, ring closing-metathesis, and cross-metathesis reactions. The highlight of our strategy describes a one-pot reaction involving stereoselective
对于天然存在的内酯synargentolide-B已经在14个步骤由市售完成了全合成的方便和实用的方法升抗坏血酸和ð核糖涉及Bestmann-大平反应,锌介导的烯丙基化,环闭合复分解反应,并跨复分解反应。我们策略的重点是描述一锅反应,包括立体选择性添加烯丙基锌试剂和选择性还原末端炔烃以获得关键的高级中间体。