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Turkish Journal of Chemistry, Vol.30, No.4, 525-534, 2006
Iridoids, flavonoids and monoterpene glycosides from Galium verum subsp verum
From the aerial parts of Galium verum subsp. verum L. were isolated 7 iridoid glycosides, asperuloside (1), asperulosidic acid (2), deacetyl-asperulosidic acid (3), monotropein (4), 6-O-epi-acetylscandoside (5), daphylloside (6) and deacetyl-daphylloside (7); 2 flavonol glycosides, astragalin [= kaempferol 3-O-beta-glucopyranoside] (8) and rutin [= quercetin 3-O- rutinoside] (9); and 2 monoterpene glycosides, betulal-buside A (10) and (2E)-2,6-dimethyl-2,7-octadien-1,6-diol-6-O- beta-glucopyranoside (11). The structures of the isolates were established by ID and 2D NMR spectroscopy in combination with IR, UV and ESI-MS analysis.
Keywords:Galium verum subsp verum;Rubiaceae;iridoid glycosides;asperuloside;asperulosidic acid;deacetyl-asperulosidic acid;monotropein;6-O-epi-acetylscandoside;daphylloside;deacetyldaphylloside;flavonol glycosides;astragalin;rutin;monoterpene glycosides;betulalbuside A;(2E)-2,6-dimethyl-2,7-octadien-1,6-diol-6-O- beta-glucopyranoside.