Extraction method of Chinese medicine of gold buckwheat raw anthocyanin

Method for screening dihydrochalcone compound

The invention relates to a method for screening a dihydrochalcone compound, which comprises the following steps: firstly combining B series of compounds of a plurality of benzaldehyde compounds into a mixture and leading the mixture to react with m types of A series of acetophenone compounds of a ketoaldehyde condensation reactant in sequence to generate corresponding m groups of dihydrochalcone mixtures; combining the m types of A series of compounds into a mixture and leading the mixture to react with B series of single compounds in sequence to generate a plurality of groups of dihydrochalcone mixtures. Respective strongest mixtures are selected from the A series of mixtures and the B series of mixtures to determine the strongest A series of acetophenone compound and the strongest B series of benzaldehyde compound; the strongest A series of acetophenone compound is reacted with a plurality of B series of compounds in sequence, and the strongest B series of benzaldehyde mixture is reacted ...

Composition capable of promoting insulin secretion and inhibiting generation of advanced glycosylation end products

The invention relates to a composition capable of promoting insulin secretion and inhibiting generation of advanced glycosylation end products. The composition comprises the following components in percentage by mass: 5-95% of proanthocyanidin extract and 5-95% of dihydrochalcone. The main component of the proanthocyanidin extract is proanthocyanidin which accounts for 50-70% of the mass of the extract. The composition lays a foundation for the production of the future compound medicines, is beneficial to controlling blood sugar of diabetics and preventing and treating diabetic complications.The composition of the invention has the advantage that the multifunctional synergistic effect is obviously superior to effect of each independently used component.

Preparing process of Chinese medicine dragon's blood flavone extract

Method for preparing 4'-hydroxy-2,4,6-trimethoxy dihydrocharcone

The invention relates to a method of the preparation of loureirin B i.e. 4' -hydrox-2, 6-trimethoxychalcone, pertaining to the technical field of the chemical synthesis of dihydrochalcone. The invention takes 4-benzyloxy acetophenone as raw material to conduct aldol condensation reaction with 2, 4, 6-trimethoxybenzaldehyde in alkaline alcohol solution to achieve intermediate 4'- benzyloxy-2, 4, 6- trimethoxychalcone; subsequently, the intermediate is added with hydrogen for reduction under the existence of catalyst Pd/C, and de-protecting group, and finally, the desired loureirin B is achieved. The invention provides a method for the chemical synthesis of loureirin B, the operation method is simple and safe, the achieved product has high purity and has activity as high as that of the loureirin B extracted from Longxuejie (Chinese medicine).

Novel dihydrochalcone compound separated and purified from drgon blood and preparation method thereof

The invention relates to a new dihydrochalcone compound that is separated and purified from Long Xuejie and the manufacture method. It adopts Long Xuejie as raw material, uses light petroleum and chloroform solvent to distill, decreases pressure and concentrating chloroform extractive, takes silica gel column or rapid silica gel chromatography and takes Sephadex LH-20 gelcolumn chromatography andseparating, purifies chromatogram, and finally gains dihydrochalcone compound. The chemical name is 4'- hydroxyl-2', 4- dimethoxy- dihydrochalcone. The compound has good effect to avoid platelet aggregation.