Two new 2-(2-phenylethyl)chromones from Chinese eaglewood

Abstract

Two new 2-(2-phenylethyl)chromones, (5S ^*,6R ^*,7S ^*)-5,6,7-trihydroxy-2-(3-hydroxy-4-methoxyphenethyl)-5,6,7,8-tetrahydro-4H-chromen-4-one (1) and (5S ^*,6R ^*,7R ^*)-5,6,7-trihydroxy-2-(3-hydroxy-4-methoxyphenethyl)-5,6,7,8-tetrahydro-4H-chromen-4-one (2), were isolated from the Chinese eaglewood of Aquilaria sinensis (Lour.) Gilg. Their structures were established by detailed MS and NMR spectroscopic analysis, as well as comparison with the literature data.

Keywords:

• Chinese eaglewood
• Aquilaria sinensis
• chromone

Acknowledgements

This research was financially supported by the National Nonprofit Institute Research Grant of CATAS-ITBB (No. ITBBZD2007-4-3) and the Science and Technology Foundation of Chinese Academy of Tropical Agricultural Sciences (No. RKY0726).