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91results about How to "Reduce liver toxicity" patented technology

3-vinyl-quinoxaline-2(1H)-one derivatives acting on FGFR-1, preparation method and uses thereof

The present invention discloses 3-vinyl-quinoxaline-2(1H)-one derivative acting on FGFR-1, a preparation method and uses thereof, and belongs to the field of pharmaceutical chemistry. According to the present invention, o-phenylenediamine and pyruvic acid are adopted as raw materials and are subjected to cyclization to obtain 3-methyl quinoxaline-2(1H)-one, the 3-methyl quinoxaline-2(1H)-one reacts with different substituted aldehydes to obtain 3-substituted quinoxaline derivatives, and the 3-substituted quinoxaline derivatives are adopted as the intermediate products and are subjected to substitution to obtain other types of the target compounds, wherein the 6 new compounds are prepared; and the 3-vinyl-quinoxaline-2(1H)-one derivatives of the present invention have a certain inhibition effect for experiment cells, show a certain anti-tumor activity, and further have characteristics of cell selectively, good safety, and kinase inhibition activity.
Owner:WENZHOU MEDICAL UNIV

Novel diester and triester based low molecular weight, biodegradeable cationic lipids for oligonucleotide delivery

The instant invention provides for novel cationic lipids of Formula A that can be used in combination with other lipid components such as cholesterol and PEG-lipids to form lipid nanoparticles with oligonucleotides. It is an object of the instant invention to provide a cationic lipid scaffold that demonstrates enhanced efficacy along with lower liver toxicity as a result of lower lipid levels in the liver. The present invention employs low molecular weight cationic lipids with one short lipid chain coupled with inclusion of hydrolysable functionality in the lipid chains to enhance the efficiency and tolerability of in vivo delivery of siRNA.
Owner:SIRNA THERAPEUTICS INC
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