A new flavonol glycoside, quercetin 3-O-[6’’’-O-3,5-dihydroxycinnamoyl-b-glucopyranosyl-(1!2)]-b-galactopyranoside (named lilacifloroside; 1) and a new iridoid 2 (named asperulogenin), were isolated from the aerial parts of Asperula lilaciflora in addition to eight known secondary metabolites, i.e.,quercetin, kaempferol, quercetin 3-O-b-glucopyranosyl-(1!2)-b-galactopyranoside, quercetin 3-O-bglucopyranosyl-(1!2)-arabinopyranoside, asperuloside, deacetylasperulosidic acid, asperulosidic acid methyl ester, and chlorogenic acid. The structures were elucidated on the basis of extensive 1D- and 2DNMR experiments as well as MS data. Compound 1 contains the rare 3,5-dihydroxycinnamoyl moiety in its structure. This work constitutes the first phytochemical study of the title plant.

Flavonol glycosides and iridoids from asperula lilaciflora

MASULLO, MILENA;PIACENTE, Sonia
2014-01-01

Abstract

A new flavonol glycoside, quercetin 3-O-[6’’’-O-3,5-dihydroxycinnamoyl-b-glucopyranosyl-(1!2)]-b-galactopyranoside (named lilacifloroside; 1) and a new iridoid 2 (named asperulogenin), were isolated from the aerial parts of Asperula lilaciflora in addition to eight known secondary metabolites, i.e.,quercetin, kaempferol, quercetin 3-O-b-glucopyranosyl-(1!2)-b-galactopyranoside, quercetin 3-O-bglucopyranosyl-(1!2)-arabinopyranoside, asperuloside, deacetylasperulosidic acid, asperulosidic acid methyl ester, and chlorogenic acid. The structures were elucidated on the basis of extensive 1D- and 2DNMR experiments as well as MS data. Compound 1 contains the rare 3,5-dihydroxycinnamoyl moiety in its structure. This work constitutes the first phytochemical study of the title plant.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4521270
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