Formal synthesis of (−)-flustramine B and its absolute configuration assignment by vibrational circular dichroism exciton chirality
作者:Reyna E. Cordero-Rivera、Myriam Meléndez-Rodríguez、Oscar R. Suárez-Castillo、Claudia I. Bautista-Hernández、Nayely Trejo-Carbajal、Julián Cruz-Borbolla、Luis E. Castelán-Duarte、Martha S. Morales-Ríos、Pedro Joseph-Nathan
DOI:10.1016/j.tetasy.2015.05.009
日期:2015.7
product (−)-flustramine B (3) is described, together with an easy and reliable approach for the absolute configuration assignment of a series of (3R,14S)- and (3S,14S)-oxindolylacetylphenyloxazolidinones 4, 6, 13a–c, and amides (+)- and (−)-14 by evaluation of the vibrational circular dichroism bisignated couplet resulting from the interaction of the C2 and C9 carbonyl groups. The absolute configuration
描述了天然产物(-)-氟stramine B(3)的形式合成,以及用于一系列(3 R,14 S)-和(3 S,14 S)的绝对构型分配的简便可靠的方法)-oxindolylacetylphenyloxazolidinones 4,6,13A - ç,和酰胺(+) -和( - ) - 14用的评价用振动圆二色bisignated对联从C2和C9羰基的相互作用而产生的。绝对构型分配通过1 H NMR光谱和X射线衍射验证,因此证实了(-)-氟雌胺B 3被建立为(3a S,8a R)-3。