作者:Xue-Lian Liu、Hui-Jun Chen、Yang-Yang Yang、Yikang Wu、Jun You
DOI:10.1002/ejoc.201402096
日期:2014.6
products were very consistent with those reported for their natural counterparts. In most cases, the optical rotations were also consistent with the corresponding data for the natural samples. The new findings not only allowed unequivocal assignments of the absolute configurations for the natural products, but also revealed that the configurations of closely related compounds from the same plant may be
为了找到关于一组结构非常相似但旋光度不同的已知天然苯丙烷的绝对构型的诱人问题的答案,这些化合物是使用 Evans 不对称烷基化以对映异构纯形式合成的。生成具有预定义绝对配置的立体中心。合成产物的 1H 和 13C NMR 光谱与其天然对应物的报道非常一致。在大多数情况下,旋光度也与自然样品的相应数据一致。新发现不仅允许对天然产物的绝对构型进行明确分配,