Two new chalcones,β,2′,4′,5′-tetramethoxychalcone 1,andβ,2′,5′-trimethoxyfurano[4″,5″：3′,4′]-chalcone 2 were obtainedfrom an ethyl acetate-soluble fraction of ethanol extract of the stem of Fordia cauliflo...Two new chalcones,β,2′,4′,5′-tetramethoxychalcone 1,andβ,2′,5′-trimethoxyfurano[4″,5″：3′,4′]-chalcone 2 were obtainedfrom an ethyl acetate-soluble fraction of ethanol extract of the stem of Fordia cauliflora.Their chemical structures were determinedby analysis of spectroscopic evidences.展开更多
基金supported by the National Natural Science Foundation of China[No.30973620]the National Basic Research Program of China(973 Program)(No.2009CB526512)Guizhou Science and Technology Department (No.SY20083025,20087004).
文摘Two new chalcones,β,2′,4′,5′-tetramethoxychalcone 1,andβ,2′,5′-trimethoxyfurano[4″,5″：3′,4′]-chalcone 2 were obtainedfrom an ethyl acetate-soluble fraction of ethanol extract of the stem of Fordia cauliflora.Their chemical structures were determinedby analysis of spectroscopic evidences.
