4'-Hydroxy-2,4-dimethoxychalcone
4'-Hydroxy-2,4-dimethoxychalcone has antimalarial activity.
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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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Pharmacology. 2011;87(1-2):96-104.
In vitro biotransformation, in vivo efficacy and pharmacokinetics of antimalarial chalcones.[Pubmed:
21282967]
METHODS AND RESULTS:
4'-n-Butoxy-2,4-dimethoxy-chalcone (MBC) has been described as protecting mice from an otherwise lethal infection with Plasmodium yoelii when dosed orally at 50 mg/kg/dose, daily for 5 days. In contrast, we found that oral dosing of MBC at 640 mg/kg/dose, daily for 5 days, failed to extend the survivability of P. berghei-infected mice. The timing of compound administration and metabolic activation likely contribute to the outcome of efficacy testing in vivo. Microsomal digest of MBC yielded 4'-n-butoxy-4-hydroxy-2-methoxy-chalcone and 4'-(1-hydroxy-n-butoxy)-2,4-dimethoxy-chalcone.
CONCLUSIONS:
We propose that the latter will hydrolyze in vivo to
4'-Hydroxy-2,4-dimethoxychalcone, which has greater efficacy than MBC in our P. berghei-infected mouse model and was detected in plasma following oral dosing of mice with MBC. Pharmacokinetic parameters suggest that poor absorption, distribution, metabolism and excretion properties contribute to the limited in vivo efficacy observed for MBC and its analogs.
