Data di Pubblicazione:
2014
Citazione:
Farinose alpine Primula species: phytochemical and morphological investigations / P. Colombo, G. Flamini, M.S. Christodoulou, G. Rodondi, S. Vitalini, D. Passarella, G. Fico. - In: PHYTOCHEMISTRY. - ISSN 0031-9422. - 98:(2014), pp. 151-159. [10.1016/j.phytochem.2013.11.018]
Abstract:
This work investigated the epicuticular and tissue flavonoids, the volatiles and the glandular trichome
structure of the leaves of four species of Primula L. that grow in the Italian Eastern Alps. Primula albenensis
Banfi and Ferlinghetti, P. auricula L., P. farinosa L., P. halleri Gmelin produce farinose exudates that are
deposited on the leaf surface as filamentous crystalloids.
In addition to compounds already known, a new flavone, the 3,5-dihydroxyflavone, was isolated from the
acetone extract of leaf farinas and three new flavonol glycosides, 30-O-(b-galactopyranosyl)-20-hydroxyflavone,
isorhamnetin 3-O-a-rhamnopyranosyl-(1?3)-O-[a-rhamnopyranosyl-(1?6)]-O-b-galactopyranoside,
quercetin 3-O-a-rhamnopyranosyl-(1?3)-O-[a-rhamnopyranosyl-(1?6)]-O-b-galactopyranoside,
were isolated from the MeOH extract of the leaves. All the structures were elucidated on the basis of their
1H and 13C NMR data and 2D NMR techniques, as well as on HPLC–MS. The leaf-volatiles emitted by these
Primula species were mainly sesquiterpene hydrocarbons, with the exception of P. albenensis, which produced
almost exclusively a non-terpene derivative; P. halleri flowers were also examined and the volatiles
emitted by the flower parts (corolla and calyx) were compared with the corresponding leaves.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Primula albenensis ; P. auricula ; P. farinosa ; P.halleri Primulaceae ;
Phytochemistry ; Trichome micromorphology
Elenco autori:
P. Colombo, G. Flamini, M.S. Christodoulou, G. Rodondi, S. Vitalini, D. Passarella, G. Fico
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