Iridoid Glucosides from the Aerial Parts of Globularia alypum L. (Globulariaceae).

Abstract

Terpenes U 0200Iridoid Glucosides from the Aerial Parts of Globularia alypum L.Globulariaceae). -The new chlorinated iridoid glucoside globularioside (I) is isolated from the hydromethanolic extract of the aerial parts of Globularia alypum besides 5 known iridoid glycosides. -(ES-SAFI*, N.-E.; KHLIFI, S.; KOLLMANN, A.; KERHOAS, L.; EL ABBOUYI, A.; DUCROT, P.-H.; Chem. Pharm. Bull. 54 (2006) 1, 85-88; Unite Phytopharm. Mediateurs Chim., INRA, F-78026 Versailles, Fr.; Eng.) -M. Bohle 32-216

Antioxidative effect of compounds isolated from Globularia alypum L. structure–activity relationship

“…Isolation of these compounds was achieved through successive injections on the semipreparative HPLC apparatus. The obtained fractions were controlled for their purity by analytical HPLC and pure fractions were freeze-dried and their structures elucidated through ESI-MS, CID MS, tandem MS-MS, 1D and 2D homonuclear and heteronuclear NMR analysis (Es-Safi et al, 2005, 2006. The phytochemicals isolated from G. alypum include flavonoids F 1 -F 4 , iridoids I 1 -I 6 and phenylethanoids P 1 -P 4 in addition to syringin (S) (Fig.…”

“…After several successive injections, samples corresponding to the same chromatographic peaks were controlled by analytical HPLC, concentrated under reduced pressure and lyophilized. The structures of the isolated compounds were elucidated through spectroscopic methods as previously described (Es-Safi et al, 2005, 2006.…”

“…The plant is a perennial shrub found throughout the Mediterranean area, and is known for its uses in the indigenous system of medicine for a variety of purposes such as hypoglycaemic agent, laxative, cholagogue, stomachic, purgative, sudorific and also in the treatment of cardio-vascular and renal diseases (Bellakhdar, Claisse, Fleurentin, & Younos, 1991). Activity-guided fractionation of the MeOH fraction of G. alypum led to the isolation of flavonoids, phenylethanoids and iridoids (Es-Safi et al, 2005, 2006. In the present study, we investigate the antioxidative activity of these compounds against 2,2-diphenyl-1-picrylhydrazyl free radical.…”

Lichen Secondary Metabolites

“…However, since synthetic antioxidants are often carcinogenic, finding natural substitutes is of great interest (Zhang et al 2009). Concerns regarding toxicological effects and carcinogenic potential of synthetic antioxidants have prompted the need for natural alternatives in the last few decades (Lu and Foo 2001;Aligiannis et al 2003;Vagi et al 2005;Es-Safi et al 2006). Therefore, the importance of search for the exploitation of effective natural antioxidants has greatly increased in recent years (Pokorny et al 2001;Gulcin et al 2004;Naveena et al 2008).…”

Plant Polyphenols: Extraction, Structural Characterization, Hemisynthesis and Antioxidant Properties

“…The structures of the obtained compounds were elucidated through ESI-MS, CID MS, tandem MS-MS, 1D and 2D homonuclear and heteronuclear NMR analysis (Es-Safi et al, 2005a, 2006b). The phytochemicals isolated from G. alypum include syringin 1, iridoids 2-7, flavonoids 8-11, and phenylethanoids 12-15 ( Figure 1) while rosmarinic acid 16 was isolated from S. verbenaca.…”