نتایج جستجو برای: iridoid
تعداد نتایج: 803 فیلتر نتایج به سال:
While this Article was undergoing peer review, Salim et al. (2013), Asada et al. (2013) and Salim et al. (2014) published individual steps of the (seco)iridoid biosynthesis pathway in Catharanthus roseus, including the molecular and biochemical characterization of 7-deoxyloganic acid hydroxylase, 7-deoxyloganetic acid glucosyl transferase and 7-deoxyloganetic acid synthase, which are in agreeme...
The iridoid glycoside, geniposide was purified by centrifugal partition chromatography (CPC) with a two-phase solvent system composed of ethyl acetate:isopropanol:water (3:2:5, v/v) from an 80% methanolic extract of fruits of Gardenia jasminoides. Preparative CPC yielded 56.2 mg of geniposide in a one-step separation of 500 mg of extract, with a purity of 95% as determined by HPLC. Isolated gen...
A new phenylpropanoid glycoside isoangoroside C was isolated from the roots of Scrophularia scorodonia. Its structure was determined on the basis of spectral data as: 3-hydroxy-4-methoxy-beta-phenylethoxy-O-alpha-L-arabinopyranosy l-(1-->6)alpha L-rhamnopyranosyl-(1-->3)-4-O-Z-feruloyl-beta-D-glucopyranoside. Additionally, one known phenylpropanoid, angoroside C, and five known iridoid glycosid...
NIR-FT-Raman spectroscopy was used for identification and quantification of harpagoside in secondary roots of Harpagophytum procumbens as well as in related phytopharmaceutical products, e.g., ethanolic extracts and tablets. Applied Raman mappings reveal the spatial distribution of this valuable iridoid glycoside within the different samples. The same technique can be used for quality control p...
Two new iridoid glycosides, named williamsoside C (1) and williamsoside D (2) were isolated from the root barks of Sambucus williamsii Hance. Their structures were established on the basis of extensive spectroscopic analysis (1D, 2D NMR and HRESIMS) and chemical studies as α-D-glucopyranosyl (1→2)-β-D-fructofuranosyl (4→6)-β-morroniside (1) and 7β-O-ethyl morroniside-(6'-O-7'')-β-morroniside (2...
There are 34 Phlomis L. species (Labiatae) growing in Turkey. Some Phlomis species are used as tonics and stimulants in Anatolia . During our systematic phytochemical investigations of Phlomis species we have studied P. linearis Boiss. & Bal.3−6, Phlomis armeniaca Willd., Phlomis pungens Willd. var. pungens 8−10, Phlomis pungens Willd. var. hirta Velen, Phlomis bourgaei Boiss., and Phlomis long...
Plants make specialized bioactive metabolites to defend themselves against attackers. The conserved control mechanisms are based on transcriptional activation of the respective plant species-specific biosynthetic pathways by the phytohormone jasmonate. Knowledge of the transcription factors involved, particularly in terpenoid biosynthesis, remains fragmentary. By transcriptome analysis and func...
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