合成了六氢姜黄素 (HHC) 和八氢姜黄素 (OHC),并使用超临界流体色谱分离了它们的对映体。HHC 和 OHC 的绝对构型 (AC) 是使用振动圆二色性、电子圆二色性和旋光色散的实验测量和量子理论预测独立确定的。这些研究导致 (−)-( R )-HHC 和 (+)-( R , R )-OHC 的 AC 分配。OHC 的 AC 由单晶 X 射线衍射确定的结构进一步证实。
Chemical and<i>in vitro</i>biological formation of octahydrocurcumin stereoisomers, and<i>in vitro</i>activity of raceme and<i>meso</i>-octahydrocurcumin
作者:Toshio Niwa、Yoji Kato、Toshihiko Osawa
DOI:10.1093/bbb/zbac204
日期:2023.2.24
meso-octahydrocurcumin than raceme octahydrocurcumin. Similar result was found in the product obtained from tetrahydrocurcumin and NaBH4, whereas using palladium carbon as a catalyst increased the meso-octahydrocurcumin ratio. Compared with chemical methods, baker's yeast produced 3S,5S-octahydrocurcumin and meso-octahydrocurcumin from tetrahydrocurcumin. The different activity between raceme and meso-octahydrocurcumin