Green Enzymatic Synthesis of L-Ascorbyl Fatty Acid Ester: An Antioxidant
摘要:
In green chemistry, biocatalysis using microwaves is a very attractive tool for various regioselective syntheses. L-Ascorbyl fatty acid esters were synthesized by an immobilized lipase from Bulkholderia multivorans using microwaves, with a dynamically enhanced rate of reaction and appreciable yield of around 80%. Microwave radiation had no effect on enzymic inactivation, however, synergism between microwaves and biocatalyst was observed.
Cyclopentanone derivatives, method of synthesis and uses thereof
申请人:Neuropharma S.A.
公开号:EP1939192A1
公开(公告)日:2008-07-02
The present invention relates to cyclopentanone derivatives of formula (I), their method of synthesis and uses thereof. Concretely, the compounds disclosed have proved to be inhibitors of glycogen synthase kinase 3β, GSK-3 β, which is known to be involved in different disease and conditions, such as Alzheimer's disease or non-insulin dependent diabetes mellitus. The present invention also relates to pharmaceutical compositions comprising the same. Further, the present invention is directed to the use of the compounds in the manufacture of a medicament for the treatment and/or prevention of a GSK-3 mediated disease or condition.
This invention provides aqueous and non-aqueous clear formulations including at least one lipophilic bioactive molecules and an amphiphilic solubilizing agent. Exemplary aqueous formulations include a water-soluble reducing agent, which diminishes or prevents chemical degradation of the lipophilic bioactive molecule. The invention also provides methods of using the formulations of the invention. For example, the invention provides beverages including the formulations of the invention. The invention further provides methods of making the formulations and beverages.
An organic acid ester of ascorbic acid or erythorbic acid is produced by reacting ascorbic acid or erythorbic acid with an organic acid enol ester in an organic solvent with a solubility of ascorbic acid or erythorbic acid of more than 0.3% at 25°C in the presence of an active lipase.
申请人:National University Corporation
Hokkaido University
公开号:EP2478768A1
公开(公告)日:2012-07-25
The present invention provides an anti-plant virus agent which exhibits preventative and therapeutic effects on plant virus diseases. The anti-plant virus agent of the present invention is characterized by containing at least one compound selected from the group consisting of ascorbic acid derivatives represented by Formula (I) (wherein, R1 to R4 each independently represents a hydrogen atom, -SO3H -PO3H2, a glycosyl group, or -COR11, wherein R11 represents an unsubstituted or substituted C1-30 alkyl group, or an unsubstituted or substituted C2-30 alkenyl group, with the proviso that R1 to R4 may not all be hydrogen atoms at the same time), and salts thereof.