Structure and Total Synthesis of (−)-Myrionidine and (−)-Schoberine, Antimalarial Alkaloids from <i>Myrioneuron nutans</i>
作者:Van Cuong Pham、Akino Jossang、Philippe Grellier、Thierry Sévenet、Van Hung Nguyen、Bernard Bodo
DOI:10.1021/jo801046j
日期:2008.10.3
Two new alkaloids, (5S,9S,10R)-myrionidine (1) and (5S,9S,10R,13S)-myrionamide (2), along with the known schoberine (3), were isolated from the leaves of Myrioneuron nutans (Rubiaceae), and their structures were determined from spectral analysis, including mass spectrometry and 2D NMR. The total asymmetric syntheses of (-)-myrionidine (1), (-)-schoberine (3), their enantiomers as well as their 9-epimers
从Myrioneuron nutan(茜草科)及其结构是通过光谱分析(包括质谱和2D NMR)确定的。进行了(-)-myrionidine(1),(-)-schoberine(3),其对映异构体以及9-epimers衍生物的总不对称合成,从而确定了其与Myrionamide(2的绝对构型)的绝对构型)。(-)-Myrionidine(1)及其合成对映异构体(18)对恶性疟原虫具有显着的抗疟活性。