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Volumn 19, Issue 16, 2009, Pages 4652-4656

Glycolipid ester-type heterodimers from Ipomoea tyrianthina and their pharmacological activity

Author keywords

GABA; Glycolipid; Ipomoea tyrianthina; Vasorelaxant

Indexed keywords

4 AMINOBUTYRIC ACID; GLUTAMIC ACID; GLYCOLIPID; HETERODIMER; MONOMER; PLANT EXTRACT; REAGENT; SCAMMONIC ACID A; TETRASACCHARIDE; TYRIANTHIN A; TYRIANTHIN B; UNCLASSIFIED DRUG;

EID: 67651102822     PISSN: 0960894X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.bmcl.2009.06.087     Document Type: Article
Times cited : (19)

References (21)
  • 6
    • 67651123466 scopus 로고    scopus 로고
    • note
    • + 1977.2361).
  • 7
    • 67651090263 scopus 로고    scopus 로고
    • note
    • 4, and evaporated under reduced pressure. The aqueous layer was lyophilized, the residue was dissolved with methanol, and a white solid (glycosidic acid) was obtained after removal of solvent.
  • 11
    • 67651125341 scopus 로고    scopus 로고
    • note
    • R 15.2 min).
  • 14
    • 67651110490 scopus 로고    scopus 로고
    • note
    • The GC-MS system consisted of a HP 6890 gas chromatograph and a HP 5970 mass selective detector in the electron-ionization. GC conditions: 25 m × 0.2 mm HP-5 column; He, 1 mL/min; Oven temperature 40 °C, 2 min, 40-250 °C, Δ 15 °C/min, 250 °C 10 min; Injector temperature 300 °C; Interfase temperature 280 °C; split 1:40.
  • 15
    • 67651087740 scopus 로고    scopus 로고
    • note
    • 3, 25.0; EDTA, 0.026 and glucose, 11.1, pH 7.4). Changes in tension were recorded by Grass-FT03 force transducers (Astromed, West Warwick, RI, USA) connected to a MP100 analyzer (Biopac Instruments, Santa Barbara, CA, USA). After equilibration, rings were contracted by noradrenaline (NA, 0.3 μM) and washed every 30 min for 2 h. The absence of endothelium was confirmed by the lack of a relaxing response to carbachol (1 μM). After precontraction with NA, the test samples (pure compounds, vehicle, and positive control) were added to the bath in a volume of 100 μL; then cumulative concentration-response curves were obtained for each ring. The relaxant effect of pure compounds and positive controls was determined by comparing the muscular tone of the contraction before and after addition of the test compounds.
  • 17
    • 67651116140 scopus 로고    scopus 로고
    • note
    • 2 bubbling. Amino-oxyacetic acid at a concentration of 10.0 μM, was added to the medium to prevent GABA metabolism. After 5 min, slices were placed in 5 mL of the basal medium (Krebs-Ringer medium) in a well of microplate at 37 °C for 10 min. Next, pure compounds were added at a final concentration of 20.0 μg/mL and aliquots of 200 μL were taken out at 0.5, 1.0, 1.5, 2.0, and 3.0 min. At the end of the experiment, the content of GABA and glutamate into each collected aliquot was determined by HPLC, previous derivation with O-phthaldialdehyde. Protein content in brain slices was determined after its homogenization in 1 mL of water.
  • 19
    • 67651087739 scopus 로고    scopus 로고
    • note
    • Antimycobacterial activity. The in vitro antimycobacterial activity of compounds 1 and 2 was measured as the minimal inhibitory concentration (MIC), and carried out using the modified microplate Blue Alamar assay (MABA). The concentrations of pure compounds ranged from 100.00 to 3.13 μg/mL. Rifampin was used as positive controls. All evaluations were carried out in duplicate.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.