(−)-diarylheptanoid xyloside isolated from the female flowers of Alnus serrulatoides is 1,7-bis(3,4-dihydroxyphenyl)-5-(β-D-xylopyranosyloxy)-3-heptanone, and its spectral data and chemical behaviors coincides perfectly with those of previously reported oregonin whose absolute configuration had not been clarified yet. Then, the absolute configuration of the diarylheptanoidxyloside was investigated by
发现从桤木雌花中分离得到的(-)-二芳基庚烷木糖苷为1,7-双(3,4-二羟基苯基)-5-(β-D-吡喃木糖氧基)-3-庚酮及其光谱数据化学行为与之前报道的俄勒冈素完全一致,其绝对构型尚未阐明。然后,通过 13 C NMR 光谱和 X 射线晶体学的组合研究了二芳基庚烷类木糖苷的绝对构型,并确定为 s。
Absolute Configuration of Platyphylloside and (−)-Centrolobol
作者:Shinji Ohta、Mika Koyama、Tadashi Aoki、Takayuki Suga
DOI:10.1246/bcsj.58.2423
日期:1985.8
The absoluteconfiguration of platyphylloside was established to be S by 13C NMR spectroscopy. On the basis of this establishment, the S-configuration previously assigned to the chirality at C-3 of (−)-centrolobol was revised to the R-configuration.