摘要
A new compound, desmosdumotin A (1), was isolated from the roots of Desmos dumosus (Roxb.) Saff. Its chemical structure was established as 5-hydroxy-7-methoxy-8-formyl-3-benzoyl-2,6-dimethyl-2R,3S-dihy-drochromone on the basis of spectral methods, including ^1H-^1H COSY, ^1H-^13C COSY, and HMBC as well as single-crystal X-ray analysis.
