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48 results about "Anti asthmatic" patented technology

Anti-Asthmatic Drugs are medicines that are used to treat or prevent asthma attacks. Asthma medicines play a vital role in gaining good control of asthma. They are available in the form of sprays, pills, powders, liquids and shots.

1,2,5-trisubstituted 1,2-dihydroindazol-3-ones having anti-asthmatic, anti-allergic, anti-inflammatory, immunomodulating and neuroprotective action, process for their preparation and their use as medicaments

The invention relates to 1,2,5-trisubstituted 1,2-dihydroindazol-3-ones of formula (I)whereinX is -SO2-, -SO-, -(CH2)p-, -(CH2)p-O-, -(CH2)p-(C=O)-, -(CH2)p-(C=O)-NH-, -(CH2)p-CHOH-, -CHOH-(CH2)p-, -(CH2)p-CH=CH-, -CH=CH-(CH2)p-,Y is -(C=O)-, -(C=O)-NH-, -(C=O)-NH-(CH2)p-, -C=O)-(CH2)p-, -(CH2)p-, -(CH2)p-O-, -(CH2)p-(C=O)-, -(CH2)p-(C=O)-NH-, -(CH2)p-(C=O)-NH-(CH2)p-, -(CH2)p-CHOH-, -CHOH-(CH2)p-, -(CH2)p-CH=CH-, -CH=CH-(CH2)p-,Z is -O-, -O-(CH2)p-, -NH-, -NH-(C=O)-, -NH-(C=O)-NH-, -NH-(C=O)-O-, -NH-CH2-(C=O)- and -NH-(C=O)-CH2-,P is a cardinal number from 1 to 4,R1, R2 and R3 can be the same or different and are:mono-, bi- or tricyclic saturated or mono- or polyunsaturated carbocycles having from 5 to 14 ring members; or mono-, bi- or tricyclic saturated or mono- or polyunsaturated heterocycles having from 5 to 15 ring members and from 1 to 6 heteroatoms,in which the carbocycles and the heterocycles can be mono- or polysubstituted by:C1-6-alkyl, -O-C1-6-alkyl, -O-C3-7-cycloalkyl, mono-, bi- or tricyclic saturated or mono- or polyunsaturated carbocycles having from 3 to 14 ring members, mono-, bi- or tricyclic saturated or mono- or polyunsaturated heterocycles having from 5 to 15 ring members and from 1 to 6 heteroatoms,R1 is also H, provided that when X is CH2, then R1 is not H,R3-Z is also NO2,and their pharmaceutically acceptable salts,but excluding compounds of formula (I) in whichif Z is -NH-(C=O)-, -NH-(C=O)-NH-, -NH-(C=O)-O-, -NH-(C=O)-CH2 and at the same time R1 is phenyl, monosubstituted or polysubstituted by -COOH, -COOC1-6-alkyl, -(CH2)p-COOH, -(CH2)p-COOC1-6-alkyl -CONHC1-6-alkyl, -CONHC6-14-aryl, -CONHSO2C1-6-alkyl, -CONHSO2C6-4-aryl, 1H-tetrazol-5-yl, then R2 is not phenyl, monosubstituted or polysubstituted by CN, halogen, C1-4-alkyl, C1-4-alkyloxy, CF3; andif R3-Z is NO2, then R1-X is not benzyl or 4-methoxybenzyl, and R2-Y is not benzyl or 2-picolyl at the same time; and to pharmaceutical treatment processes, and processes for making.
Owner:ARZNEIMITTELWERK DRESDEN GMBH

Application of gerbera piloselloides and gerbera piloselloides extract in preparation of medicine for preventing and/or treating asthma

The invention relates to the technical field of medicines, and in particular relates to an application of gerbera piloselloides and a gerbera piloselloides extract in preparation of medicines for preventing and / or treating asthma. Research finds that the gerbera piloselloides and the gerbera piloselloides extract, especially a 60% ethanol extraction part of gerbera piloselloides, can play an anti-asthma role by inhibiting IgE generation in serum and inhibiting the levels of IL-8, IL-5, TNF-alpha and other inflammatory factors, and have obvious anti-asthma activity, which indicates that the 60%ethanol extraction part of gerbera piloselloides after elution and purification with 10% ethanol can be used as an anti-asthma effective active part of gerbera piloselloides. The gerbera piloselloides and the gerbera piloselloides extract can obviously improve asthma symptoms, can improve allergic reaction symptoms; moreover, and relieving the damage degree of lung tissues, and can be used to prepare medicines for preventing or treating asthma. In addition, the gerbera piloselloides is a natural Chinese herbal medicine, is safe and is free of toxic and side effects when being used, and has agood application prospect.
Owner:GUIZHOU MEDICAL UNIV

Process for the preparation of zafirlukast

The present invention provides a novel process for the preparation of alkyl (1-alkylindol-3-ylmethyl)benzoate derivatives which process comprises the steps of: (a) reacting of an alkyl (halomethyl)benzoate with excess of an indole, said indole being unsubstituted at positions 1-, 2- and 3-, under conditions promoting alkylation at the 3-position of the indole to yield a mixture comprising alkyl (indol-3-ylmethyl)benzoate and unreacted starting indole, (b) treating the mixture obtained in step (a) with base to yield a mixture, comprising the salt of (indol-3-ylmethyl)benzoic acid and the unreacted indole, (c) recovering the unreacted indole from the mixture obtained in step (b), and recycling the indole as starting material to step (a), (d) isolating the salt of (indol-3-ylmethyl)benzoic acid and/or acidifying the salt to form (indol-3-ylmethyl)benzoic acid, (e) reacting the (indol-3-ylmethyl)benzoic acid or it's salt with alkylating agent in the presence of base to form the desired alkyl (1-alkylindol-3-ylmethyl)benzoate. The above process affords also the preparation of the anti-asthmatic leukotriene antagonist zafirlukast. In such case, methyl 3-methoxy-4-(1-methyl-5-nitroindol-3-ylmethyl)benzoate [a]is formed in step (e) of the process and this compound is subsequently converted into zafirlukast by known methods.
Owner:FINETECH LAB

Compressor anti-surge quick opening valve

The invention aims at providing an anti-surging quick-opening valve of a gas compressor. The valve comprises a valve body and a valve plate, the valve plate is located in the valve body, the valve plate is connected with a valve shaft, the valve shaft extends out of the valve body, the part, extending out of the valve body, of the valve shaft is connected with a valve plate linkage plate, a permanent magnet is fixed to the valve plate linkage plate, a brake device and an electromagnet are arranged on the valve body, the brake device is provided with an opening, a speed limiting sliding rod penetrates through the opening of the brake device, one end of the speed limiting sliding rod is fixed to the valve plate linkage plate, the other end of the speed limiting sliding rod is provided with alimiting check block, when the electromagnet is powered on, the permanent magnet is attracted so as to drive the valve plate to rotate so as to be in the closing state, the valve can be opened without exterior equipment, when the electromagnet of the quick-opening valve is in failure, the valve can be automatically opened, danger cannot be caused during surging, reliability and safety are high, under the urgent condition, only a power source needs to be cut off, the electromagnet is demagnetised, the valve is opened, and the valve has the extremely high reliability.
Owner:哈尔滨俱创燃气轮机有限公司
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