Oppolzer Sultam Directed Aldol as a Key Step for the Stereoselective Syntheses of Antitumor Antibiotic Belactosin C and Its Synthetic Congeners<sup>,</sup>
作者:Gullapalli Kumaraswamy、Mogilisetti Padmaja、Bekkam Markondaiah、Nivedita Jena、Balasubramanian Sridhar、Marelli Udaya Kiran
DOI:10.1021/jo0516887
日期:2006.1.1
An efficient protocol has been developed using d-(2R)-Oppolzer sultam as a chiral auxiliary for generating anti/syn diastereomers with high enantiopurity and utilized in the efficient synthesis of natural product belactosin C and their synthetic congeners. It has been observed that a variation in the stoichiometry of the Lewis acid led to a difference in anti/syn selectivity.
已经开发出一种有效的方案,使用d-(2 R)-Oppolzer sultam作为手性助剂,以产生具有高对映体纯度的抗/ syn非对映异构体,并被用于天然产物Belactosin C及其合成同源物的高效合成。已经观察到路易斯酸的化学计量的变化导致抗/同步选择性的差异。