作者:Maddimsetti Venkateswara Rao、Batchu Venkateswara Rao、Bokka Ramesh
DOI:10.1016/j.tetlet.2014.09.009
日期:2014.10
approach for the synthesis of AI-77-B has been described. Dihydroisocoumarin fragment was made in two routes using Heck reaction followed by oxidation of the olefin and LDA mediated reaction. The chiral amino acid moiety has been obtained from d-ribose involving Grignard reaction on ribosylimine. Finally, condensation of dihydroisocoumarin with acid fragment furnished the title target AI-77-B.
已经描述了用于合成AI-77-B的新的立体选择方法。使用Heck反应,然后通过烯烃氧化和LDA介导的反应,通过两种途径制备二氢异香豆素片段。手性氨基酸部分是从涉及核糖胺上的格氏反应的d-核糖获得的。最后,二氢异香豆素与酸片段的缩合提供标题目标AI-77-B。