Structures of amides from Asiasarum heterotropoides Maek. var. mandshuricum Maek..
作者:ICHIRO YASUDA、KOICHI TAKEYA、HIDEJI ITOKAWA
DOI:10.1248/cpb.29.564
日期:——
The structures of three unstable amides from the roots of Asiasarum heterotropoides MAEK. var. mandshuricum MAEK. (Aristolochiaceae) were established as (2E, 4E)-N-isobutyl-2, 4-decadienamide (pellitorine), (2E, 4E, 8Z, 10E)-N-isobutyl-2, 4, 8, 10-dodecatetraenamide and (2E, 4E, 8Z, 10Z)-N-isobutyl-2, 4, 8, 10-dodecatetraenamide by spectroscopic investigation and chemical transformation studies. (2E, 4E, 8Z, 10E)-N-Isobutyl-2, 4, 8, 10-dodecatetraenamide and (2E, 4E, 8Z, 10Z)-N-isobutyl-2, 4, 8, 10-dodecatetraenamide were identical in their chromatographic properties, but they could be identified in a mixture of both compounds by our carbon-13 nuclear magnetic resonance method, by observing the cis double bond shielding effect in comparison with the all-trans isomer.
从Asiasarum heterotropoides MAEK.(马兜铃科)中的三种不稳定酰胺的结构,通过光谱调查和化学转化研究确定为(2E, 4E)-N-isobutyl-2, 4-decadienamide (pellitorine)、(2E, 4E, 8Z, 10E)-N-isobutyl-2, 4, 8, 10-dodecatetraenamide 和 (2E, 4E, 8Z, 10Z)-N-isobutyl-2, 4, 8, 10-dodecatetraenamide 。(2E,4E,8Z,10E)-N-异丁基-2,4,8,10-十二碳四酰胺和(2E,4E,8Z,10Z)-N-异丁基-2,4,8,10-十二碳四酰胺的色谱性质完全相同,但通过碳-13 核磁共振方法,与全反式异构体相比,它们的顺式双键屏蔽效应可以在两种化合物的混合物中进行鉴别。