67 results about "Galactosides" patented technology

The invention discloses an application of cornflower-3-O-galactoside in preparing foods or medicines for improving cognitive functions of old people. Results from animal experiments show that: compared with a control group (mice are fed with distilled water), the step-through latencies of animals fed with the cornflower-3-O-galactoside are all evidently prolonged; the escape latencies of mice in Morris water maze are evidently shortened; the duration time on a platform quadrant is evidently prolonged, and times of crossing the platform are evidently increased. The hint shows that the spatial memory ability of the old-aged mice compensated with the cornflower-3-O-galactoside can be evidently improved. Compared with an H2O2 model group, the LDH activity of hippocampal nerve cell supernate in the group fed with the cornflower-3-O-galactoside evidently decreases and the nerve cells apoptosis rate evidently decreases. The hint shows that the cornflower-3-O-galactoside can evidently suppress the hippocampal nerve cell apoptosis induced by H2O2 and play a protection role in the hippocampal nerve cells damaged by H2O2.

The invention belongs to the field of medicinal chemistry, and particularly relates to a new use and preparation method of a compound, namely the new use and preparation method of (3beta,5alpha,22alpha,25R)-spirosolane-3-O-beta-D-glucopyranosyl-(1->2)-O-[beta-D-xylopyranose-(1->3)]-O-beta-D-glucopyranosyl-(1->4)-beta-D-pyran galactoside; the compound can inhibit lung cancer cells, makes the growth period of the lung cancer cells arrested in the early stage and promotes apoptosis of the lung cancer cells. Therefore, the compound can be used in preparation of anticancer drugs, especially in preparation of anti-lung cancer drugs.

The invention discloses an alkyl 2,3,4,6-tetra-O-acetyl-beta-D-pyran galactosyl-(1->4)-2,3-di-O-acetyl-beta-D-pyran heteroside and a preparation method thereof. The raw material lactose is completely acetylized to react with alcohol to obtain alkyl-O-hepta-acetyl galactoside, and 6-acetyl on glucose group is selectively deacetylated to obtain the target compound. The synthesizing method provided in the invention has the advantages of simple, convenient and fast operation, low cost and the like. The invention also discloses an application of alkyl galactoside receptor in fast synthesizing non-natural oligosaccharide having antitumor activity.