X-ray crystal structure of iridoid glucoside aucubin and its aglycone

作者：Li, Yang; Zhao, Ye; Zhang, Yong-min; Wang, Min-juan; Sun, Wen-ji^*

来源：Carbohydrate Research, 2009, 344(16): 2270-2273.

DOI：10.1016/j.carres.2009.08.021

• Iridoid glycoside
• Aucubin
• Aucubigenin
• Crystal structure
• X-ray diffraction analysis

X-ray diffraction analyses of iridoid glycoside aucubin (1) and its aglycone aucubigenin (2) are reported. it was found that crystals of 1 are orthorhombic, with P2(1)2(1)2(1) space group, both cyclopentane ring and pyran ring adopt envelope conformations, and the Glc moiety is in the C-4(1), conformation. Crystals of 2 are monoclinic, with space group P2(1), the cyclopentane and pyran rings also adopt the envelope conformation. The absolute configurations of 1 and 2 were also determined. Intensive O-H center dot center dot center dot O hydrogen bonds in both crystal lattices were observed.

• 出版日期2009-11-2
• 单位西北大学