137 results about "Pyranose" patented technology

The present invention provides novel hydroxy piperidine (HP) derivatives having (i) a positive charge at the position corresponding to the anomeric position of a pyranose ring; (ii) a short, flexible linker emanating from the corresponding position of the ring oxygen in a pyranose; and (iii) a lipophilic moiety connected to the linker and pharmaceutically acceptable salts thereof. The linker can be absent if the lipophilic moiety corresponds to a hydrocarbon chain with a linear length of 6 or more carbons. The present invention further provides a method for treating individuals having Gaucher disease by administering the novel HP derivative as “active-site specific chaperones” for the mutant glucocerebrosidase associated with the disease.

Provided are O²-glycosylated 1-substituted diazen-1-ium-1,2-diolates (O²-glycosylated diazeniumdiolates) having the formula:

in which R is a saccharide, which is attached to the O² of the compound by the anomeric carbon of a pyranose ring or a furanose ring.

Disclosed is an optical film having a hard coat layer on a cellulose ester film, which contains an ester compound composed of a furanose structure or a pyranose structures and a sum of a number of the furanose structures or the pyranose structure is 1 to 12, provided that a part of hydroxy groups of the furanose structure or the pyranose structure has been esterified and a part of hydroxy groups of the furanose structure or the pyranose structure remains.

A polarizing plate protective film comprising a cellulose ester, and a saccharide ester compound in which all or a part of OH groups in Compound (A) or in Compound (B) are esterified, wherein Compound (A) consists of one of a furanose structure and a pyranose structure, and Compound (B) consists of two to twelve of at least one type of a furanose structure and a pyranose structure which are bonded in Compound (B); wherein the polarizing plate protective film exhibits Ro of 0-10 nm and Rt of −30 to +20 nm.

One of the objects of the invention relates to a pharmaceutical composition in the form of a granulate, wherein the granulates comprises an active pharmaceutical ingredient (API) having a poor water solubility intimately associated with at least one pharmaceutically acceptable sugar, and optionally or preferably at least one pharmaceutically acceptable excipient other than the at least one pharmaceutically acceptable sugar, wherein the active pharmaceutically ingredient has a water solubility less than about 20 mg/ml. The at least one pharmaceutically acceptable excipient other than the at least one pharmaceutically acceptable sugar is selected from the group consisting of disintegrants, wetting agents, diluents, binders, lubricants, glidants, coloring agents and flavoring agents. The at least one pharmaceutically acceptable sugar is preferably selected from pyranosyl pyranoses, such as lactose. Another object of the invention relates to a process for preparing a pharmaceutical granulate, comprising (a) combining an API having poor water solubility with a solution comprising at least one pharmaceutically acceptable sugar, for example a pyranosyl pyranose such as lactose, and a solvent, and optionally at least one pharmaceutically acceptable excipient other than the at least one pharmaceutically acceptable sugar to form a combined mixture; (b) drying the combined mixture of step (a); and (c) comminuting the product of step (b) to obtain the granulate.

One of the objects of the invention relates to a pharmaceutical composition in the form of a granulate, wherein the granulates comprises an active pharmaceutical ingredient (API) having a poor water solubility intimately associated with at least one pharmaceutically acceptable sugar, and optionally or preferably at least one pharmaceutically acceptable excipient other than the at least one pharmaceutically acceptable sugar, wherein the active pharmaceutically ingredient has a water solubility less than about 20 mg/ml. The at least one pharmaceutically acceptable excipient other than the at least one pharmaceutically acceptable sugar is selected from the group consisting of disintegrants, wetting agents, diluents, binders, lubricants, glidants, coloring agents and flavoring agents. The at least one pharmaceutically acceptable sugar is preferably selected from pyranosyl pyranoses, such as lactose. Another object of the invention relates to a process for preparing a pharmaceutical granulate, comprising (a) combining an API having poor water solubility with a solution comprising at least one pharmaceutically acceptable sugar, for example a pyranosyl pyranose such as lactose, and a solvent, and optionally at least one pharmaceutically acceptable excipient other than the at least one pharmaceutically acceptable sugar to form a combined mixture; (b) drying the combined mixture of step (a); and (c) comminuting the product of step (b) to obtain the granulate.

Surfactant compositions containing compounds according to structure (I), and methods of making them, are disclosed. The compounds provide reduced dynamic and equilibrium surface tension, good solubility, moderate foaming, and good cleaning performance. The methods for making them involve reaction of N-(polyhydroxyalkyl)-alkylamines with dinitriles, dialdehydes, or acetals or hemiacetals of dialdehydes in the presence of hydrogen and a transition metal catalyst.

In structure (I), x is an integer from about 1 to 12, R₁ and R₂ are independently C3-C30 linear alkyl, cyclic alkyl, branched alkyl, alkenyl, aryl, alkylaryl, alkoxyalkyl, and dialkylaminoalkyl; and R₃ and R₄ are independently hydrogen or a pyranosyl group such as α-D-glucopyranosyl, β-D-glucopyranosyl, or β-D-galactopyranosyl.

A cellulose acylate film containing a cellulose acylate and a sugar ester compound having from 1 to 12 pyranose structures or furanose structures in which at least one hydroxyl group is esterified, the film satisfying 40 nm≦Re(550)≦60 nm and 100 nm≦Rth(550)≦140 nm, and having a dimensional change of −0.5 to 0.5% and an internal haze of at most 0.1%.

The invention relates to 2-deoxy-2-isorhodanate-1,3,4,6-tetra-O-benzyl-beta-D-glucopyranose. The invention also relates to a synthetic method for 2-deoxy-2-isorhodanate-1,3,4,6-tetra-O-benzyl-beta-D-glucopyranose. The synthetic method comprises the following concrete steps: reacting 2-deoxy-2-amino-1,3,4,6-tetra-O-benzyl-beta-D-pyranose hydrochloride and carbon disulfide with triethylamine; and then reacting a reaction product with p-toluene sulfonyl chloride so as to obtain 2-deoxy-2-isorhodanate-1,3,4,6-tetra-O-benzyl-beta-D-glucopyranose, wherein acetonitrile is used as a solvent for the reaction, reaction temperature is 0 DEG C, and reaction time is 1 to 2 h. The synthetic method has the advantages of easy and safe operation, small environmental pollution, high yield and simple post-treatment. The prepared 2-deoxy-2-isorhodanate-1,3,4,6-tetra-O-benzyl-beta-D-glucopyranose can be used as an organic synthesis intermediate for synthesis of a glucosamine derivative.

A pharmaceutical composition for preventing or treating a degenerative brain disease comprising a compound of formula I or a or a pharmaceutically acceptable salt thereof as an active ingredient: (I) wherein, R¹ is H or Glc-Glc-; R² is H or OH; R³ is H, glucose, Ara(p)-Glc- or Ara(f)-Glc-; Glc is Glucose; Ara(p) is arabinose in pyranose form: and Ara(f) is arabinose in furanose form.

The invention relates to a puerarin monocrystal and a preparation method thereof. The puerarin monocrystal is named crystal form A, the CCDC number is 708830, the crystal structure is asymmetrical, each crystal cell contains two asymmetrical molecules, i.e. molecule a and molecule b, each of which carries a molecular crystal water, and moreover, the binding sites of the crystal waters are different. The crystal water of the molecule a and a hydroxyl group on a benzene ring carry out hydrogen bonding, the crystal water of the molecule b and a carbonyl group on a flavone mother nucleus carry out hydrogen bonding, the hydroxymethyl group of the glucose of the molecule a is at the position of an equatorial bond and perpendicular to a ring plane, the oxygen atom of the hydroxymethyl group is in a saccharide ring plane, the hydroxymethyl group of the glucose of the molecule b is at the position of an axial bond and perpendicular to a ring plane, the hydrogen on the rest pyranose carboatomic ring is an axial bond, the hydroxyl group is positioned at an equatorial bond, and the molecular formulas of the molecule a and the molecule b are the same, i.e. C21H20O9.H2O. The absolute configuration of the puerarin monocrystal is an asymmetrical isomer. The melting point of the puerarin monocrystal is increased, and the heat stability is remarkably enhanced compared with powder. The average purity of the puerarin crystal form A reaches 99.8 percent, higher than 99.1 percent of average purity of bulk pharmaceutical chemicals, and the quality is remarkably increased.

The invention relates to a cell membrane imaging fluorescence probe, in particular to glycosyl-substituted perylene bisimide derivative cell membrane imaging dye. An alkyl chain is introduced into oneend of the derivative, and pyranose is introduced into the other end. The dye can be self-assembled into nano-particles in vitro and enter cells, and then are redistributed in cell membranes, and after the dye is excited, the cell membranes can be specifically imaged. Compared with traditional cell membrane fluorescence dye, the dye is high in biocompatibility and lasting in light and acid stability, and the preparation method is simple, economical and capable of being widely used in cell membrane imaging research, especially, the research on imaging of the cell membranes of tumor cells in aweak acid environment.

The invention relates to platycodon grandiflorum polysaccharide extracted from rhizome of platycodon grandiflorum, a degradation product of the polysaccharide, a method for extracting the platycodon grandiflorum polysaccharide from the rhizome of the platycodon grandiflorum, a method for preparing the degradation product of the platycodon grandiflorum polysaccharide, and application of the platycodon grandiflorum polysaccharide and the degradation product thereof to preparing a medicine for treating anti-tumour cell angiogenesis diseases. The structure of the platycodon grandiflorum polysaccharide disclosed by the invention is (1->4)-alpha-D- pyranose homogalacturonan, has the polymerization degree of 15-100, the corresponding molecular weight of 2.0-18.0 kD, and the specific rotation of [alpha]D19+125 DEG (c0.05, H2O), and is represented by the following structural formula described in the specification. The molecular weight range of a degradation product obtained by partial acid hydrolysis of the platycodon grandiflorum pectin polysaccharide is 1.4-3.0 kDa. Vivo experiments prove that the platycodon grandiflorum polysaccharide can obviously inhibit lumen generation function of a human microvascular endothelial cell (HMEC-1) and is hopefully used as a novel anti-tumour medicine for inhibiting the growth of a solid tumour by inhibiting angiogenesis.

The present application relates to a salt of a pyranose-substituted heterocyclic compound, a preparation method therefor, and use thereof, and in particular, to an acid addition salt of a compound of formula (I) or a prodrug thereof, and further relates to D-glucuronate of a crystalline compound of formula (I) or a prodrug thereof. D-glucuronate of a crystalline compound of formula (II) has particular advantages in terms of crystallizability, subsequent purification, stability, formulation medicinal properties or quality control, and is most applicable for improving the formulation pharmaceutical properties, purity and quality control, as well as large-scale process development of such drugs.

The invention discloses a kit for detecting 1, 5-AG with good stability and a method in the field of medical detection. According to the kit disclosed by the invention, a reagent R1 and a reagent R2 are kept stable within an expiry date under the interference of high glucose concentration by selecting a proper method and a proper stabilizer. According to the kit, the content of 1, 5-AG in a humanserum sample is determined by adopting a pyranose oxidase method. The test result shows that the kit for detecting 1, 5-AG is high in glucose interference resistance compared with other kits sold on the market, can eliminate 1-30 mM/L of endogenous glucose interference, can be stored for 7 days stably under the 37 DEG C acceleration condition, has better acceleration stability than other 1,5-AG measurement kits on the market, has the advantages of high accuracy, high precision, wide linear range, good stability and the like, and can be widely used in the diagnosis and treatment of diabetes.

The invention discloses a making method of rhodium complex compound of imidazoline and coordination of carbohydrate derivant, which comprises the following steps: reacting N,N'-di (methyl 3-deoxygenation-4, 6-O-benzyl crossing base-alpha-D-altronic pyran glycoside-3-base) ethanediamine and 40 ml ammonium chloride in the triethoxymethane for 3-4. 2h; cooling; filtering; washing through petroleum ether to obtain chiral imidazoline ligand; blending the ligand and [RhCl(COD)]2 and NaOtBu to react in the 20ml THF for 48h at 45 deg. c; filtering; purifying through column chromatography to obtain the product as high-property catalyst.

The invention relates to application of 7-O-beta-D-acetylation sugar-coumarin compounds in treating chronic neuropathic pains. The 7-O-beta-D-acetylation sugar-coumarin compounds comprise a pharmaceutically acceptable salt, ester or a solvate thereof, and the application relates to the application of the salt, the ester or the solvate in preparing medicaments for treating the chronic neuropathic pains, wherein a glycosyl part is arbitrary pyranose or furanose, the hydroxy of which is totally acetylated; a representative compound is 7-O-beta-D-acetylation glucose-coumarin; and the structural formula is disclosed in the specification. On a classical sciatic nerve chronic compression injury (CCI) model, through single intragastric administration and continuous intragastric administration for 7 days, the compound shows definite treatment effect of resisting nervous pains. At a dose point appointed by an experiment, the compound can obviously improve the mechanical stimulus pain threshold, the nervous pain resistant efficacy is equivalent to that of Gabapentin which is a contrast medicament, and the duration is superior to that of the Gabapentin. Proved by research results, the compound can be used for treating the chronic neuropathic pains.

The invention relates to novel dipyrano-quinolinone class of compounds having the general formula:Wherein R is hydrogen, alkyl optionally substituted about C-1 to C-10 alkenyl optionally substituted about C-1 to C-10 with one or more double bounds, alkynyl optionally substituted about C-1 to C-10 with one or more triple bonds, aryl, hetero aryl, carbocyclic aryl, alkyl aryl, alcyclic compounds, C-1 to C-6 alkyl with terminal dialkyl amino group, thio alkyl, hydroxyl alkyl groups;R1 is H, lower dialkyl amino alkyls such as methyl, ethyl, propyl, and other alkyl groups or b-amino acid moieties, hydroxy alkyl groups having optionally substituted about C-1 to C-10 carbons, acid amides such as aliphatic acids, aromatic acids, sulphonic acids trihalo acids.x-x is either a carbon-carbon single bond or a carbon-carbon double bond;R2 and R3, R4 and R5 are each independently hydrogen and methyl there by resulting the cis and trans diastereomers as well as enantiomers;R4 and R5 are each independently hydrogen and methyl while R6 and R7 are each independently hydrogen and hydroxyl/-OR8, where R8 is independently alkyl, aryl alkyl, amino alkyl, hydroxy alkyl with C-1 to C-10 carbons, sugars which include mono saccharides both in the furanose form as well as pyranose form, amino sugars, disaccharides, amino acids, small peptides through lower alkyl spacer groups, thereby resulting the cis and trans diastereomers as well as enantiomers; and a process for producing the above novel dipyrano-quinolinone class of compounds.

The invention relates to the technical field of chemical synthesis, and especially relates to a preparation technology of 1-O-acetyl-2,3,5-tri-O-benzoyl-beta-D-ribofuranose, which comprises a glycosilation reaction, a benzoylation reaction and an acetylation reaction. According to the invention, the low temperature glycosilation reaction is carried out at 0-5DEG C, so the generation of a pyranose ring is effectively reduced; the benzoylation reaction is carried out through adopting an inorganic weak base, so the raw material cost, and contents of nitrogen-containing organic matters in process wastewater are reduced; a cosolvent is added to an acetylation reaction system, so the solidification of glacial acetic acid is effectively inhibited, the fluidity of the reaction system is improved, and stirring can fully perform effects, and is in favor of smooth carrying-out of the reaction. The whole preparation technology which has the advantages of simple operation, high product yield, low cost, and low contents of the nitrogen-containing organic matters in the wastewater is suitable for industrialized production.

A polarizer protective film comprising: a cellulose ester; a saccharide ester having an ester of compound (A), the compound (A) having one furanose structure or one pyranose structure in the molecule, wherein all or a part of OH groups in the compound (A) are esterified, or an ester of compound (B), the compound (B) having two to twelve of at least one of a furanose structure and a pyranose structure bonded in the molecule, wherein all or a part of OH groups in the compound (B) are esterified; and a compound represented by Formula (R) or (Ra):

The invention discloses a preparation method and application of liquorice homogeneous polysaccharide GUP. The homogeneous polysaccharide GUP is obtained by water extraction and alcohol precipitation after licorice is degreased and decolorized by petroleum ether and 95% ethanol and purified by an anion exchange chromatography column and a dextran gel chromatography column after protein removal by aSevag method, the total sugar content of the GUP is 98.39%, the protein content is 0.09%, the glucuronic acid content is 1.66%, the molecular weight is 17416Da, the monosaccharide composition is mannose: rhamnose: glucose: galactose: arabinose = 0.75:5.98:213.54:4.76:15. 51, is alpha-type pyranose, and is not provided with a space triple helix structure. The liquorice homogeneous polysaccharide GUP has the good effect for lowering uric acid and inhibiting xanthine oxidase, and has the potential to be used for preparation of anti-hyperuricemia drugs.

The invention relates to application of 3-carbethoxyphenyl-beta-D-acetylated glucoside in treating depression. The 3-carbethoxyphenyl-beta-D-acetylated glucoside comprises a pharmaceutically acceptable salt, ester or a solvate thereof, and the application relates to the application of the salt, the ester and the solvate in preparing medicaments for treating the depression, wherein a glycosyl part is arbitrary pyranose or furanose, the hydroxy of which is totally acetylated; a representative compound is 3-carbethoxyphenyl-beta-D-acetylated glucoside; and the structural formula is disclosed in the specification. The compound is used for treating the depression, on two depression behavior models, through 45mg/Kg of single intragastric administration to a mouse of a KM species, the representative compound 3-carbethoxyphenyl-beta-D-acetylated glucoside shows definite depression resistant effect, and the depression resistant effect of the compound is higher than that of Hilieidum with equivalent quantity. A test on the spontaneous activity of the mouse also indicates that an effective dose point does not show the effect of interfering in the spontaneous activity of the tested animal.

The invention provides a composite medical film and a preparation method thereof. The composite medical film comprises the following components: low-density polyethylene, chitosan, friedelin, 3-hydroxyl-4-methoxybenzoic acid, kaempferol, quercetin, 2,7-dehydrate-beta-D- altroheptulo pyranoses, silicon dioxide, an antioxidant, a cross-linking agent and an antibacterial agent. The preparation method comprises the following steps: weighing all the components in parts by weight, feeding the components into a reaction kettle, heating in a nitrogen atmosphere, and continuously stirring to react, thereby obtaining a prefinished product; extruding the prefinished product in a double-screw extruder, thereby obtaining master batch; performing extrusion film blowing on the master batch in a plastic film blowing machine, thereby obtaining the composite medical film. The composite medical film provided by the invention is excellent in mechanical property, also good in biocompatibility, free of irritation to skin and just like normal saline, the tensile strength of the composite medical film is greater than 22MPa, and the steam permeation rate of the composite medical film is smaller than 3*10<-14>*(kg.m/(m<2>.s.Pa)).