Synthesis of natural polyene isobutylamides. Stereochemistry of the wittig reactions
作者:Leslie Crombie、David Fisher
DOI:10.1016/s0040-4039(00)94859-7
日期:1985.1
Unsaturated isobutylamide synthons are employed to make seven natural amides. The (Z)-selectivity of the Wittig reaction towards the newly formed olefinic bond in the seven examples is estimated by 13 Cmr.
Distribution of unsaturated aliphatic acid amides in japanese Zanthoxylum species
作者:Ichiro Yasuda、Koichi Takeya、Hideji Itokawa
DOI:10.1016/0031-9422(82)80128-3
日期:1982.1
Abstract Seven species and two varieties of Zanthoxylum in Japan were investigated for unsaturated aliphatic acid amides. In addition to the known amides α-sanshool, γ-sanshool and hydroxy-γ-sanshool, a new compound, hydroxy-α-sanshool, was isolated and established by chemical and spectroscopic evidence. The compounds, corresponding to hydroxyl derivatives of the amides in the barks, commonly existed in the