Influence of the Melissa officinalis Leaf Extract on Long-Term Memory in Scopolamine Animal Model with Assessment of Mechanism of Action

Figure 2

(a) Mass spectra in negative ionization mode and simplified fragmentation scheme of compound 25 (pentameric ester of caffeic acid). (b) Mass spectra in negative ionization mode and simplified fragmentation scheme of compound 26 (pentameric structure of sagecoumarin di-2-hydroxy-3-(3,4-dihydroxyphenyl)-propanoide caffeide). (c) Mass spectra in negative ionization mode and simplified fragmentation scheme of compound 36 (pentameric structure of sagecoumarin caftaride).

(a)

(b)

(c)