Katerere David R, Gray Alexander I, Kennedy Alan R, Nash Robert J, Waigh Roger D
Department of Pharmaceutical Sciences, University of Strathclyde, 27 Taylor Street, Glasgow G4 0NR, UK.
Phytochemistry. 2004 Feb;65(4):433-8. doi: 10.1016/j.phytochem.2003.09.014.
A dichloromethane extract of the aerial parts of Combretum albopunctatum Suesseng afforded five phenolic compounds-three known flavonoids and two novel cyclobutane chalcone dimers. The chemical structures were determined by standard spectroscopic techniques and the structure and relative stereochemistry of one chalcone dimer, rel-(1 alpha,2 beta)-di-(2,6-dimethoxy-4-hydroxy)-benzoyl-rel-(3 alpha,4 beta)-diphenylcyclobutane, were confirmed by single crystal X-ray diffraction.
白花风车子地上部分的二氯甲烷提取物得到了五种酚类化合物——三种已知的黄酮类化合物和两种新型环丁烷查耳酮二聚体。通过标准光谱技术确定了化学结构，并通过单晶X射线衍射证实了一种查耳酮二聚体rel-(1α,2β)-二-(2,6-二甲氧基-4-羟基)-苯甲酰基-rel-(3α,4β)-二苯基环丁烷的结构和相对立体化学。
