Figure 6

MSⁿ spectra and major fragmentations for the typical hydroxycinnamic acid derivatives in D. indicum var. aromaticum flower. (A) Compound 1 (3-O-caffeoyl-5-O-p- coumaroylquinic acid); (B) compound 2 (coumaroyloleuropein); (C) compound 5 (3,5-dicaffeoylquinic acid).