9 results about "Methylglucoside" patented technology

The present invention discloses a novel process for synthesizing an empagliflozin intermediate compound, wherein α-methyl glucoside is used as a raw material, carbonyl protection is performed, the configuration is flipped by SN2 reaction, and then a Friedel-Crafts alkylation reaction is performed to obtain an empagliflozin intermediate compound. The beneficial effects of the present invention are as follows: the present invention provides a novel synthesis process by selectively synthesizing new raw materials and obtaining chiral products by SN2 configuration flipping, thereby avoiding the use of expensive chiral reagents, while reducing the reaction steps of the overall route, and being able to effectively reduce the generation of reaction by-products; in addition, the synthesis method of the present invention is simple to operate, the raw materials are easily available, the product yield is high, the reaction selectivity is good and the purity is high, and it is suitable for industrial expansion production.

The invention belongs to the technical field of food attractants, and particularly relates to a dichocrocis punctiferalis food attractant. The invention relates to a food attractant. The food attractant is prepared from alpha-pinene oxide, methyl glucoside caprylate and leaf acetate according to the mass ratio of 1: (1-3): (1-5). According to the food attractant for dichocrocis punctiferalis disclosed by the invention, the specific components alpha-pinene oxide, methyl glucoside caprylate and leaf acetate are combined and proportioned, and the alpha-pinene oxide, the methyl glucoside caprylate and the leaf acetate respectively play roles in three links of smell attraction, nutritional requirements and host recognition, and are mutually promoted and complemented and synergistic, so that the attraction, attraction and gathering effects of the food attractant on dichocrocis punctiferalis adults are improved; the trapping and killing effect can be greatly optimized, powerful support is provided for green and efficient prevention and control of dichocrocis punctiferalis, agricultural production loss can be reduced, and the quality of agricultural products and agricultural ecological safety are guaranteed.

To provide a skin cosmetic which, even in a state of wearing a mask, can suppress skin shine while retaining a gloss-imparting effect, renders pores less noticeable, and thereby preserves even skin tone.SOLUTION: A skin cosmetic comprises the following components (A), (B), (C), and (D): (A) 0.0001 mass% to 0.05 mass% of one or two or more polymethoxyflavones, (B) 0.01 mass% to 5 mass% of polyoxyalkylene methyl glucoside, (C) 0.5 mass% to 20 mass% of at least one selected from the group consisting of glycerin and diglycerin, and (D) 0.01 mass% to 0.5 mass% of ethylhexylglycerin.SELECTED DRAWING: None

The present application relates to the technical field of anti-fatigue beverage, in particular to an anti-fatigue high-efficiency sugar-reduced sports beverage based on biotechnology and a preparation method thereof, which comprises the following components: water 80-100 parts by weight, etherified rhodiola glycoside 5-10 parts by weight, hawthorn extract 8-15 parts by weight, green tea extract 6-12 parts by weight and the like. The present application adds methyl glucoside to undergo etherification reaction with rhodiola glycoside, and the etherification product generated is more stable when the environment changes, and the active ingredients are not easy to decompose; at the same time, the improvement of water solubility of methyl glucoside promotes the absorption of rhodiola glycoside, indirectly enhances the anti-fatigue effect, and thus relieves fatigue more quickly.

The invention discloses a method for preparing deoxysugar based on photochemical reaction and application. According to the method, cheap and easily available carbohydrate raw materials such as glucose, galactose, mannose, methyl glucoside, methyl galactoside and methyl mannose glycoside are subjected to a sulfo-reaction, sulfur atoms are introduced to all positions of carbohydrate rings of different carbohydrate raw materials, and then a proper light source is selected as an initiator, so that different types of deoxy sugars are prepared. According to the method for preparing the deoxy sugar, the reaction efficiency is high, the reaction time is short, the raw materials can be completely consumed only by half an hour when the ultraviolet lamp is adopted for illumination, few by-products are generated, and the yield of most target products of the deoxy sugar can reach 95%; according to the method, a low-wattage blue light LED illumination reaction can be adopted, only a small amount of photochemical catalyst Ru (bpy) 3Cl2 (2mol%) needs to be added, and the preparation cost is low; the method is mild in reaction condition, only needs reaction at room temperature, and is easy to realize large-scale production.

The invention relates to the technical field of anti-fatigue beverages, in particular to an anti-fatigue high-efficiency sugar-reducing sports beverage based on biotechnology and a preparation method thereof, and the anti-fatigue high-efficiency sugar-reducing sports beverage comprises the following components: 80-100 parts by weight of water, 5-10 parts by weight of etherified salidroside, 8-15 parts by weight of a hawthorn extract, 6-12 parts by weight of a green tea extract and the like. According to the invention, methyl glucoside and salidroside are added for etherification reaction, the generated etherification product is more stable when the environment changes, and effective components are not easy to decompose; meanwhile, the water solubility of methyl glucoside is improved to promote the absorption of salidroside, and the anti-fatigue effect is indirectly enhanced, so that the fatigue is relieved more quickly.

The application belongs to the technical field of oil and gas field chemistry, and particularly discloses a water-soluble lubricant resistant to calcium salt. The water-soluble lubricant provided by the application comprises the following components by weight: 64-68 parts of deionized water, 2 parts of sodium dodecyl polyoxyethylene ether (3) sulfate, 14-16 parts of polyethylene glycol monobutyl ether 500, 8-11 parts of propylene glycol block polyether L-64, and 7-8 parts of methyl glucoside polyoxyethylene (120) ether dioleate. The water-soluble lubricant has the advantages of excellent salt resistance and good lubricity, and can be used as a lubricant for high-salinity brine completion fluid with bivalent salt not higher than 400000 mg / L or a lubricant for brine drilling fluid with bivalent salt not higher than 85000 mg / L.

This invention relates to the field of oil and gas field drilling technology, and discloses a waterproof locking agent for drilling fluid, its preparation method, and a treatment agent for oilfield exploration. The method includes: (1) dissolving reactants A, B, and C in water to obtain mixture I; (2) contacting mixture I with reactant D and a surfactant to obtain mixture II, and then subjecting it to an irradiation polymerization reaction; (3) pulverizing, filtering, washing, extracting, and drying the obtained crude product to obtain the waterproof locking agent; reactant A is selected from at least one of methyl glucoside, chitosan, cyclodextrin, cellulose, and lignin; reactant B is an amide monomer containing an alkenyl group; reactant C is a quaternary ammonium salt monomer containing an alkenyl group; and reactant D is a hydrophobic monomer containing a phenyl group. This waterproof locking agent can effectively reduce the surface tension of the aqueous phase and the interfacial tension between oil and water, and can effectively prevent damage to core permeability caused by oil-water emulsification and water-locking effects.

To provide a skin cosmetic that does not feel sticky during use, offers a sufficient sense of moisturization, gives a lifted feeling to the cheeks after application, and prevents the powder foundation used after application of the cosmetic from appearing powdery after a long period of time.SOLUTION: The skin cosmetic contains (A) tranexamic acid or a salt thereof in an amount of 0.1 to 5 mass%, (B) a C3 to C6 divalent alcohol in an amount of 1 to 15 mass%, (C) a polyoxyalkylene methyl glucoside represented by a specific formula in an amount of 0.01 to 5 mass%, and (D) collagen having a molecular weight of 10,000 daltons or more in an amount of 0.000005 to 0.01 mass%.SELECTED DRAWING: None