Determination of the absolute configuration of picrasidine Y, a naturally occurring β-carboline alkaloid
作者:Kazuo Koike、Hiroshi Yoshino、Hong-yu Li、Tatsunori Sasaki、Wei Li
DOI:10.1016/j.tetlet.2015.07.079
日期:2015.9
to canthin-5,6-dione compounds. The absolute configuration of natural picrasidine Y was elucidated based on comparisons of chemically synthesized isoforms with the naturally occurring compound in 1H and 13C NMR spectra, specific optical rotation, HPLC analysis with chiral columns, computational molecular simulation, and analysis with the CD exciton chirality method.
尚未确定从拟南芥(Simaroubaceae)分离出的β-咔啉生物碱吡喃ras啶Y的绝对构型。为了确定吡喃吡啶Y的绝对构型,我们使用酒石酸作为起始原料通过7步化学反应合成了吡喃吡啶Y的立体异构体。此外,我们将这种合成方法的应用范围扩展到了canthin-5,6-dione化合物。基于化学合成的同工型与天然存在的化合物在1 H和13 C NMR光谱中的比较,比旋光度,手性色谱柱HPLC分析,计算分子模拟和CD激子分析,阐明了天然苦味苷Y的绝对构型手性法。