5 results about "Gallate" patented technology

This invention discloses a method for preparing alkyl gallate without a dehydrating agent, belonging to the field of chemical reaction auxiliary technology. By optimizing the raw material ratio of the reaction system, precisely controlling the reaction environment parameters and the condensate separation rate, this invention utilizes the azeotropic properties of alcohol and water to achieve efficient separation of the water generated in the reaction. It can promote the forward esterification reaction without adding any dehydrating agent, achieving the same or even better water separation and reaction promotion effects without the need for a dehydrating agent. This invention eliminates the need for a dehydrating agent, and the synthesized methyl gallate, ethyl gallate, propyl gallate, octyl gallate, and lauryl gallate can reach a maximum content of 99.2%, with a stable product yield of 50-57g. This effectively reduces production costs, avoids the pollution problems caused by dehydrating agents, simplifies the production process, and possesses both green environmental protection and promising prospects for industrial-scale application.

The application belongs to the technical field of biology, and discloses application of gallic acid derivatives in preparation of products for treating or preventing liver diseases, wherein the gallic acid derivatives are one or more combinations of 2-Phenylethyl 1-O-beta-D-(6'-O-galloyl)-glucopyranoside, 2,3-digalloyl-D-glucopyranose, Kaempferol 3-O-glucoside-2"-gallate and Quercetin 3-O-(6'-O-Galloyl)-beta-galactoside; the four gallic acid derivatives can better reduce AST and ALT activities in alcohol-induced HepG2 cells relative to a model group, and 2,3-digalloyl-D-glucopyranose and Quercetin 3-O-(6'-O-Galloyl)-beta-galactoside have better effects than gallic acid and positive drug Silybin (Silybin).

Provided herein are compositions, methods, systems and / or kits for preventing and / or treating neoplasms using at least one modulator selected from quercetin, sodium phenyl butyrate and epigallocatechin-3-gallate in combination with one or more anti-cancer agents. The compositions, methods, systems and / or kits are used to prevent and / or treat neoplasms that are resistant to the one or more anti-cancer agents when administered alone. Also provided are nanoformulations based on nanoparticles with one or more anti-cancer agents and / or one or more modulators for preventing and / or treating neoplasms.