Iridoid Glucosides fromEremostachys moluccelloidesBunge (original) (raw)
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Iridoid Glucosides from Lamium garganicum subsp. laevigatum
2007
Phytochemical investigations on the above-ground parts of Lamium garganicum subsp. laevigatum resulted in the isolation of 7 iridoid glucosides: shanzhiside methyl ester (1), barlerin (8-O-acetylshanzhiside methyl ester) (2), 6-O-syringyl-8-O-acetylshanzhiside methyl ester (3), 6b-hydroxyipolamiide (4), lamalbide (5), dehydropenstemoside (6), and sesamoside (7). The structure of the iridoids was elucidated by spectroscopic (UV, IR, 1D- and 2D-NMR, and ESI-MS) evidence.
New Iridoid Glycosides fromLamium eriocephalum subsp.eriocephalum
Helvetica Chimica Acta, 2007
Two new iridoid glycosides, eriobioside (1) and lamerioside (2), were isolated from the aerial parts of Lamium eriocephalum subsp. eriocephalum, along with the two known compounds lamiide (3) and ipolamiide (4). Their structures were elucidated by spectroscopic methods (UV, 1D-and 2D-NMR) and by mass spectrometry (HR-ESI-MS).
Iridoid glucosides from Turkish Phlomis tuberosa
ZEITSCHRIFT FUR …, 2005
From the aerial parts of Phlomis tuberosa a new iridoid glucoside, chlorotuberoside was isolated together with five known iridoid glucosides, lamalbide, shanzhiside methyl ester, 7-epi-phlomiol (= phloyoside I), sesamoside and 5-deoxysesamoside. Two known phenylethanoid glycosides, forsythoside B, and decaffeoylacteoside, three known neolignan glycosides, dehydrodiconiferyl alcohol 9'-O-β -D-glucopyranoside, dihydrodehydrodiconiferyl alcohol 9-O-β -D-glucopyranoside and dihydrodehydrodiconiferyl alcohol 9'-O-β -D-glucopyranoside, one flavone glycoside, luteolin 7-O-β -D-glucopyranoside, as well as β -sitosterol 3-O-β -D-glucopyranoside and 1-methyl-O-β -D-glucopyranoside were also obtained and characterized. The structures of the isolates were elucidated on the basis of spectroscopic data. The three known phenylethanoid glycosides, verbascoside, leucosceptoside A and martynoside were identified by TLC comparison with authentic compounds.
Planta Medica, 2021
As the sixth-largest Angiosperm family, Lamiaceae contains more than 245 genera and 7886 species that are distributed worldwide. It is also the third-largest family based on the number of taxa in Turkey where it is represented by 46 genera and 782 taxa with a high endemism ratio (44%). Besides, Lamiaceae are rich in plants with economic and medicinal value containing volatile and nonvolatile compounds. Many aromatic plants of Lamiaceae such as Salvia, Sideritis, Stachys, Phlomis, and Teucrium species are used in traditional herbal medicine throughout Turkey as well as in other Mediterranean countries. Salvia (Sage tea “Adaçayı”), Sideritis (Mountain tea “Dağçayı”), Stachys (Hairy Tea “Tüylü Çay”), and Phlomis (Turkish sage “Çalba or Şalba”) are the largest genera that are used as herbal teas. This review focuses on the volatile and nonvolatile compounds of Lamiaceae from the genera Phlomis and Eremostachys of the subfamily Lamioideae with emphasis on iridoids, phenylethanoid glycosi...
Iridoid Glucosides from Phlomis tuberosa L. and Phlomis herba-ventis L
Zeitschrift für Naturforschung C, 2000
A new iridoid glucoside, 5-desoxysesamoside, was isolated from Phlomis tuberosa L. (Lamiaceae) together with three known iridoid glucosides sesamoside, shanziside methyl ester and lamalbid. Lamiide was found in P. herba-ventis ssp. pungens in high concentrations.
Antibacterial iridoid glucosides from Eremostachys laciniata
Phytotherapy Research, 2009
Eremostachys laciniata (L) Bunge (family: Lamiaceae alt. Labiatae; subfamily: Lamioideae) is one of the 15 endemic Iranian herbs of the genus Eremostachys. A decoction of the roots and flowers of E. laciniata has traditionally been taken orally for the treatment of allergies, headache and liver diseases. Three antibacterial iridoid glucosides, phloyoside I (1), phlomiol (2) and pulchelloside I (3) have been isolated from the rhizomes of this plant. The structures of these compounds were elucidated unequivocally by a series of 1D and 2D NMR analyses. The antibacterial activity and brine shrimp toxicity of these compounds were assessed using the resazurin microtitre assay and the brine shrimp lethality assay, respectively. All three iridoid glycosides 1-3 exhibited from low to moderate levels (MIC = = = = = 0.05-0.50 mg/mL) of antibacterial activity. Of these compounds, compound 3 was the most active, and displayed antibacterial activity against 9 of 12 different strains tested. The most noteworthy activity of 3 was against Bacillus cereus, penicillin-resistant Escherichia coli, Proteus mirabilis and Staphylococcus aureus with an MIC value of 0.05 mg/mL.
Iridoid glucosides from Linaria japonica
Phytochemistry, 1993
Ah&act-Phytochemical investigation of Linda jupnica afforded four new iridoid glucosides, 6/3-hydroxyantirrhide, linarioloside, 5-deoxyteuhircoside and sect-linarioside, along with the known iridoid glucosides, antirrhide, antirrhinoside, linarioside, linaride and 7/3-hydroxy-8-epi-iridodial glucoside, and three known phenolic glucosides, salidroside, syringin and B-D-ghiCOpyranO?&-l-ferulate. Their structures were determined from spectroscopic evidence. INTRODUCI'ION Linariu juponicu Miq. is a perennial plant which grows in coastal areas on the Japan Sea. In earlier studies on the plant, the isolation was reported of several flavonoid glycosides [l-3] and iridoid glucosides [4, 5-J. On reinvestigation of the same plant, collected in Tottori Prefecture, Japan, using modern preparation methods, four new iridoid glucosides were isolated, along with six known iridoid glucosides and three known phenolic glucosides. This paper deals with the structural determination of these new iridoid glucosides, and includes physical properties of known iridoid glucosides whose 13C and/or 'H NMR data were hitherto not available.
Preliminary study on the phytochemical evolution of different Lamiaceae species based on iridoids
Biochemical Systematics and Ecology, 2019
In this work, an interesting potential application of phytochemistry is reported. In particular, we employed the Sporne diagrams to provide information about the evolution of some different Lamiaceae species in relation to their content in secondary metabolites. In more details, fifteen species belonging to six different genera were studied i.e. Ajuga L., Galeopsis L., Melittis L., Sideritis L., Stachys L. and Teucrium L. The selected secondary metabolites were iridoids because of their wide occurrence and distribution within all the family, thus providing a more accurate and general overview. Nineteen different compounds of this class were identified in the studied species. The aim of this work was to verify if the evolutionary data available in literature for the studied species and based on molecular studies, matched with those obtained from a more phytochemical approach or not. The final objective was to ascertain a correspondence between these two opposite methods. The results of this study clearly showed that, only in some cases, this correspondence was present. This may suggest the possibility to use both methods for drawing phylogenetic trees of plants. Anyway, this study is not general and is quite limited in studied species and in collection areas and does not intend to affirm its absolute accuracy even though it may be a good starting point for future researches in this field.