Digiferruginol
Digiferruginol has cytotoxic activity. Digiferruginol and hederagenin show weak effect on porcine respiratory and reproductive syndrome virus (PRRSV) with an IC50 value of 80.5 ± 16.9 uM(SI = 19.9) and 43.2 ± 7.4 uM (SI = 13.1), respectively.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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J. Braz. Chem. Soc., 2012, 23(10):1925-32.
Chemical constituents from Chirita longgangensis var. hongyao with inhibitory activity against porcine respiratory and reproductive syndrome virus[Reference:
WebLink]
METHODS AND RESULTS:
The structures of the new compounds were elucidated by detailed analysis from NMR (nuclear magnetic resonance) and MS (mass spectrometry) data, and the absolute configuration of chiritalone A was determined by single crystal X-ray diffraction analysis using the Flack parameter. The inhibitory activity of compounds against porcine respiratory and reproductive syndrome virus (PRRSV) was measured by the cytopathic effect (CPE) method.
CONCLUSIONS:
Digiferruginol and hederagenin showed weak effect on PRRSV with an IC50 value of 80.5 ± 16.9 μmol L-1 (SI = 19.9) and 43.2 ± 7.4 μmol L-1 (SI = 13.1), respectively.
J Nat Prod. 1985 Nov-Dec;48(6):948-51.
Antitumor agents, 75. Synthesis of cytotoxic anthraquinones digiferruginol and morindaparvin-B.[Pubmed:
3841556]
A simple and efficient synthesis of Digiferruginol (4) and morindaparvin-B (10) is described.
METHODS AND RESULTS:
Marschalk reaction of 1-hydroxyanthraquinone afforded 1-hydroxy-2-methylanthraquinone (2). Treatment of 2 with N-bromosuccinimide and benzoyl peroxide led to 1-hydroxy-2-bromomethylanthraquinone (3), which was converted to 4 with AgNO3 in quantitative yield. Methylation of 1,5-dihydroxyanthraquinone yielded a dimethyl ether (6), which was partially demethylated with boron trifluoride to a difluoroboron chelate (7). Treatment of 7 with alkaline HCHO and sodium dithionate gave rise to 1-hydroxy-2-hydroxy-methyl-5-methoxyanthraquinone (9). Cleavage of the 5-methyl ether of 9 with boron tribromide furnished 10.
