loganic acid/リンドウ属

A quantitative method to determine loganic acid and gentiopicroside in Gentiana macrophylla Pall. and Gentiana straminea Maxim. by RP-HPLC was established in this paper. The two compounds were base-isolated on the coloumn of Zorbax SB-C18 (250 mm x 4.6 mm i.d., 5 microm) which eluted with MeOH and

BACKGROUND The flowers of Gentiana macrophylla have been usually applied to cure the joint inflammation and rheumatoid arthritis in Traditional Chinese Medicine. OBJECTIVE This work aimed to investigate the anti-rheumatoid arthritic effect and possible mechanism of iridoid glycosides from G.

Repetitive chromatography of the methanol extract of the roots of Gentiana tibetica afforded two new secoiridoid glycosides and a novel antifungal anthranilic acid derivative, together with beta-sitosterol, daucosterol, oleanolic acid, loganic acid, gentiopicroside, sweroside,

A new bitter acylsecoiridoid glucoside, rindoside, has been isolated along with a known iridoid glucoside, loganic acid, from rhizomes and roots of GENTIANA SCABRA var. BUERGERI. The structure of rindoside was established by chemical and spectral evidence.

To study the effect of phosphorus( P) and potassium( K) fertilization on four iridoids in axial and lateral root of Gentiana crassicaulis. Field experiment was conducted based on phosphorus and potassium,and the content of four iridoids was analyzed in the axial and lateral root of Gentiana

A rapid method combining microwave-assisted extraction (MAE) and high-speed counter-current chromatography (HSCCC) was applied for preparative separation of six bioactive compounds including loganic acid (I), isoorientin-4'-O-glucoside (II), 6'-O-β-d-glucopyranosyl gentiopicroside (III),

Efficient high-performance countercurrent chromatography methods were developed to isolate five typical compounds from the extracts of Gentiana macrophylla. n-Butanol-soluble extract of G. macrophylla contained three hydrophilic iridoids, loganic acid (1), swertiamarin (2) and gentiopicroside (3),

Gentiana straminea is the famous Tibetan folk medicine thought to cure various diseases. Historically, the Qinghai-Tibetan region has been considered as the geo-authentic production area of "Mahua Jiao," where large quantities of the medicine are grown. However, there is still little known about the

From flowers and leaves of GENTIANA PEDICELLATA (Gentianaceae), two new iridoids, 4'- P-coumaroyl loganic acid and 4'- P-coumaroyl loganin, have been isolated along with the known iridoid, loganic acid. This is the first report of iridoid glucosides with the 4'-oxygen of the glucose moiety

OBJECTIVE To study the chemical constituents of Gentiana veitchiorum. METHODS The chemical constituents were isolated by chromatography and identified by spectral data. RESULTS Five glycosides, loganic acid (1), gentiopicroside (2), isoorientin 3'-methyl ether (3), isovitexin (4), isoorientin (5)

BACKGROUND Gentiana scabra is commonly known as 'Longdan' is an important herb in traditional Chinese medicines, commonly used for the treatment of inflammation, anorexia, indigestion and gastric infections. Iridoids and secoiridoids are main bioactive compounds which attributed to the

Gentiana crassicaulis Duthie ex Burk. and Gentiana macrophylla Pall. are two main sources of Radix Gentianae Macrophyllae (Qinjiao) available in markets, which has a wide range of anti-inflammatory effects and has been extensively used for fighting rheumatoid arthritis. However, they vary in terms

HPLC profile guided study led to the isolation of an acylated secoiridoid glycoside, named gentiotrifloroside (1), together with six known compounds, i.e., loganic acid (2), 6-O-beta-d-glucopyranosylgentiopicroside (3), swertiamarin (4), gentiopicroside (5), sweroside (6) and 2

This study aims to establish a new method for quality evaluation of Gentianae Macrophyllae Radix by simultaneous determination of five iridoids (loganic acid, 6'-O-beta-D-glucopyranosylgentiopicroside, swertiamarin, gentiopicroside, sweroside), and to detect five iridoids in the root of eight

A simple, reliable and rapid ultra-performance liquid chromatography-tandem mass spectrometry method was developed and validated for the simultaneous quantification of four secoiridoid (gentiopicroside, swertiamarin, sweroside) and iridoid glycosides (loganic acid), the bio-active ingredients in rat