Untitled

Хушбактова, З. А.; Faizieva, S. Kh.; Сыров, В. Н.; Yuldashev, M. P.; Batirov, É. Kh.; Mamatkhanov, A. U.

doi:10.1023/a:1010410029719

Cited by 12 publications

(6 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…IR spectra were obtained on a Perkin-Elmer BX FT-IR spectrometer in a KBr disk. 1 H NMR (600 MHz) and 13 C NMR (150 MHz) spectra were recorded in DMSO-d 6 with TMS as an internal standard using a Bruker 600 spectrometer. FAB MS spectroscopy was carried out with a Micromass Autospec M363 spectrometer and MALDI-TOF MS spectroscopy was carried out on a Model Voyager-DE STR spectrometer.…”

Section: Instrumentmentioning

confidence: 99%

See 1 more Smart Citation

Phenolic compounds from Populus davidiana Wood

et al. 2009

Chem Nat Compd

View full text Add to dashboard Cite

Five phenolic compounds, including a new phenolic glycoside, 2-hydroxycyclohexyl- 6′-O-p-coumaroyl-β-D-glucopyranoside, as well as the known flavonoids, naringenin, kaempferol, quercetin and luteolin, were isolated from the wood of Populus davidiana by repeated column chromatography over Sephadex LH-20. The structures of the compounds were elucidated by spectral evidence. Populus davidiana Dode (Salicaceae), a fast-growing hardwood species, is distributed throughout Northern China, Korea, and Siberia [1]. The tree has been used in folk medicine to cure diarrhea, paralysis, pulmonary disease, pox, and variola [1, 2]. Previous phytochemical studies of P. davidiana bark resulted in the isolation of coumarins, phenolic glycosides, and flavonoids [2-4].Herein we report the results of an investigation of the chemical constituents of P. davidiana wood, which was collected in April of 2007 in Tianjin, China.Repeated column chromatography of the EtOAc soluble fraction of the 70% acetone extract led to the isolation of a new phenolic glycoside, 2-hydroxycyclohexyl-6′-O-p-coumaroyl-β-D-glucopyranoside (1) of composition C 21 H 28 O 9 , as well as the known flavonoids, including naringenin, kaempferol, quercetin, and luteolin.Compound 1 was obtained as a yellow amorphous powder. The MALDI-TOF MS spectrum revealed an [M+Na] + ion at m/z 447, indicating the molecular weight 424 and molecular formula C 21 H 28 O 9 . The melting point was measured at 260-262°C and [ ] D 20 α +36.8° (c 0.12, MeOH). The presence of the phenolic hydroxyl group in molecular of 1 was recognized from the grey-green color with 1% ethanolic FeCl 3 solution on TLC [5]. The IR spectrum of 1 showed absorption bands for hydroxyls at 3400 cm -1 , ketone C=O at 1690 cm -1 , and aromatic C=C bonds at 1510 and 1480 cm -1 [2].

show abstract

Section: Instrumentmentioning

confidence: 99%

“…With the composition monitored by TLC, fractionation finally led to the isolation of compound 1 (48 mg), naringenin (134 mg) [10], kaempferol (321 mg) [11], quercetin (82 mg) [12], and luteolin (108 mg) [13]. …”

Section: Instrumentmentioning

confidence: 99%

Phenolic compounds from Populus davidiana Wood

et al. 2009

Chem Nat Compd

View full text Add to dashboard Cite

show abstract

“…(Fabaceae) is a perennial, erect, branched herb native to middle Asia, Russia, Kazakastan, Kyrgystan and Uzbekistan. The plant is documented to possess expectorant, vermifuge and hypolipidemic properties [1,2]. Chemical investigations revealed the presence of alkaloids (cytisine, methyl cytisine, thermopsine, alteramine, dimethamine, pachycarpine), flavonoids (crotonoyl thermopsoside, crotonoylcosmosiin, formononetin, chrysoeriol, apigenin, luteolin, thermopsoside and cynaroside.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Analysis of Cytisine in Thermopsis Alterniflorae Using High-Performance Thin-Layer Chromatography

GADHVI

Modi

Mamta

2023

Int J Curr Pharm Sci

View full text Add to dashboard Cite

Objective: An optimized high-performance thin-layer chromatography (HPTLC) method has been established for the quantification of cytisine in Thermopsis alterniflorae Regel and Schmalh. Methods: Alcoholic extract of the aerial parts were prepared using Soxhlet extraction method. Separation was achieved on silica gel 60 F254 HPTLC plates using toluene-ethyl acetate-diethyl amine (7:2:1, v/v) as the mobile phase. The quantitation of cytisine was carried out using densitometric scanning at 545 nm after derivatization using Dragendorff’s reagent. Results: The linear regression analysis data for the calibration plot showed a good linear relationship (r2 = 0.9849) in the concentration range 10 to 15 µg/spot. The method was validated for precision, repeatability, accuracy, specificity, limit of detection and limit of quantification. The average recovery was 99.0899% indicating good accuracy. The percentage yield of cytisine obtained was 0.5075+0.0135 % w/w. Conclusion: The proposed HPTLC method was found to be simple, sensitive, accurate, reproducible, and robust.

show abstract

“…Column chromatography of various fractions of the ethanol extract isolated a new flavone glycoside (1) of composition C 21 H 20 O 11 , which we called viscioside, in addition to the known flavonoids apigenin [4,5], luteolin [4,6], quercetin [7,8], cinaroside [4,7], luteolin-4′-O-β-D-glucoside [9], and isoquercitrin [7,8].…”

mentioning

confidence: 99%