Match Application Number Document Title
1 90105838 Process for synthesizing 1-n-butyl azetidene-2-one
In this invention, orthobutanol, potassium (or sodium) bromide, H2SO4 are used as raw materials to generate orthobrombutane, and the orthobrombutane (or benzyl chloride) and caprolactam ...
2 90103105 Synthesis process of permeate agent azoen
The present invention relates to a synthesizing process of osmosizing agent (A zone) capable of promoting conveying drug into inner layer of human or animal skin and quickening skin abso...
3 90103295 Therapeutic agents
The compound of formula below and its salt may be used as blood sugar dropping agent. In the formula below: n=0 or 1; R1 and R2 represents aliphatic group or naphthenic group; or NR1R2 r...
4 90103419 Z-hydroxyl quinoline preparation method
Said invention provided with two steps synthesis method for praparation of quinolone using ortho-phenyl enenediamine and chloro acetic acid as raw material, and ammonium carbonate as aci...
5 90104682 Derivatives of taxol, pharmaceutical compositions thereof and methods for the p...
Derivatives of taxol are provided together with pharmaceutical compositions of such derivatives. The taxol derivatives have increased water solubility as compared to taxol, and have exce...
6 90106503 Process for preparing phylloporphyrin
This phylloporphyrin prepared according to this invention is a photosensitive agent as a medicine for laser diagnosis. Under the radiation of laser, it shows red fluorescence at positive...
7 90106612 Arylpyrrole insecticidal, acaricidal and nematicidal agents and methods for pre...
This invention is directed to certain novel insecticidal, acaricidal and nematicidal arylpyrrole agents and a method for controlling insects, acarids and nematodes therewith. The inventi...
8 90107591 Indole derivatives
Compounds are disclosed of formula wherein R1 represents a C1-6 alkyl group; R2 represents a hydrogen atom or a C1-3 alkyl group; n represents zero or an integer from 1 to 3; and pharmac...
9 90106838 Preparation method of 2,3-dihydroxy-2,2-dimethyl-7-benzofuran phenol
The present invention belongs to the field of chemical pesticides. It is an intermediate benzofuran phenol for producing excellent systemic insecticide and miticide carbofura pesficide, ...
10 90107309 Preparation of new type amide compound with xanthic surface
By extaction from the leaves of clausena lansium, separation and purification, two clausena-amide compounds with following molecular formulas are obtained, which are effective on curing ...
11 90107375 Synthesizing method of tetrachloroquinone anhydride
The present invention relates to a method for synthesizing tetrachlorobenzene anhydride which is used in fine chemical industry. It is to use chlorosulfonic acid as reaction solvent, iod...
12 90106365 Cantharidin fat-soluble medicament preparation
The present invention relates to a fat-soluble cantharidin intermediate preparation and a method for preparing a series of antiviral and antibiotic new preparation wherein the prepared i...
13 90102926 Synthesis of 4-sulpho-4-deoxidation-4'-demethyl podophyllotoxin derivative
This invention introduces a process for synthesis of 4-sulfydryl-4-deoxy-4'de- by using 4'-de-norepipodophyllo toxin as raw material which is reacted with hydrogen sulfide under the acti...
14 90107608 Technology for producing nicotine products from tobacco by dry distillation
The present invention gives up such methods for producing nicoteine mother liquor as distillation or immersion-decocting, but adopts such a method that adds appropriate caustic soda solu...
15 90106379 Cyclohexane Chlorination process for obtaining N-cyclohexyl thiophthalimide
This invention relates to a cyclohexane chlorination process for preparing N-cyclohexyl thiophthalimide which is called anti-coking agent CTP for short and is an additive to prevent coki...
16 90107999 Process for preparing 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one 2,2-dioxide a...
The present invention relates to a method which makes acetoacetamide derivative to close the ring so as to prepare 6-methyl-3,4-dihydro-1,2,3-oxazine-4-ketone 2,2-dioxide and its non-tox...
17 90107995 Asymmetric epoxidation using chiral hydroperoxide
Prochiral ethylenically unsaturated substrates are converted to chiral epoxides by reaction with optically active hydroperoxides in the presence of transition metal catalysts. For exampl...
18 90109457 Alkylene oxide catalysts containing high silver content
Catalysts for the epoxidation of alkene, esp. ethylene, to the corresponding alkylene oxide, e.g., ethylene oxide, which catalysts contain a high silver content on carriers having a high...
19 90105750 Preparation method and anti-bearing usage of tripterygium-wilfordii ketone
According to this invention, a plant, tripterygium wilfordii is extracted with solvent and the resultant extraction is chromatographed, eluted with organic solvent and crystallized to ob...
20 90108579 Preparation of milky active initiator in production of polyether
The present invention relates to an improved method for preparation of polyethernon-ionic surfactant, it is suitable for preparatin of epoxy ethane and epoxy propane polyether or copolye...
21 90109415 Extracting bilirubin from bible with double-stablizing method
This invention discloses an improved process for preparing cholerythrin from animal's bile. A mixed solvent of ethyl acetate and dichloromethane is added to the bile to extract free chol...
22 90105974 Preparation method of tripterygium wilforbii and its use of antifertility
This invented compound is used for antibirth. Its preparation method is that babstracts the plant of tripterygium wilforbdii with solvent then proceeds the stratification analysis of abs...
23 90109607 Method for extracting natural caffeine from tea
The present invention refers to a method for extracting natural caffeine from tea. A non-toxic organic solvent is mixed with tea in the specified proportion and heated, then separated ce...
24 90109981 Preparation of alcohol-extended and amine-extended piperazines
A process for preparing alcohol-extended and amine-extended piperazines comprising contacting a difunctional aliphatic alcohol with a reactant amine, wherein at least one of the aliphati...
25 91100048 Synthetic method of 4-hydroxy-7-chloro-quinolinic acid
This synthetic process of 4-hydroxy-7-chloro-Quinolinic acid is an organic synthetic technology which aims at solving the problems existed in existing processes, such as high consumption...
26 91100370 Purification method of L-proline
The present invention relates to a purification method of L-proline. The existent L-proline purification methods, including ion-exchange resin method, ethyl alcohol-ethyl ether method an...
27 91100760 Extraction of berberin by salting out with biacid
The present invention refers to a method for extracting Coptis chinensis by soaking with two acids and salt. It uses root of phellodendron amurense tree as main raw material, which is fi...
28 91100541 Synthesis method for Bentazon herbicide
This invention relates to process for preparing a kind of herbicide. The easily getting isatin anhydride is used as raw material, which is reacted with a solvent such as dichloro-ethane,...
29 92105035 Pyridine derivatine, method for preparing the same, herbicidal composition cont...
This invention provides a new type of pyridine derivative, its salt and its preparation process. In the formula of pyridine derivative, R is hydrogen, hydroxyl, alkoxyl, etc; R1 may be s...
30 92105182 Synthetic method for photosensitive material couplant AP
The present invention discloses a method for synthesizing non silver salt couplant AP which is an international novel organic photosensitive material developed quickly in recent years, t...
31 92109524 Acridine derivatives
Compound with general formula described in specification, its salt and solution are disclosed. The said compound can make cancer cells resisting the action of several pharmaceuticals sen...
32 92105718 Preparation of inhibitor for inhibiting growth of cancer cells in animal and hu...
In the prepn. method of the inhibiting agent for the propagation of malignant tumour cell of animals including human beings, a mixture of polycondensates of L-lactic acid of 5-25 condens...
33 92109161 Technology for extracting natural caffeine from tea
This process to extract natural coffeine from tea leaves includes steam-cooking tea leaves, filtering and centrifugal dewatering steps. It keys are as follows: further concentrating tea ...
34 92109618 Process for producing flavone compounds from skullcap (root)
This invention relates to a process to extract flavonoid from a Chinese herbal medicine, skullcap root. Its technological steps include decocting skullcap root twice, filtering, merging ...
35 92106681 Process for producing 5-fluoropyridine derivatives
Process to prepare 5-fluoropyridine derivatives is that correspondent fluoro-acetate is condensated with formate by use of sodium alkoxide as condensating agent and then cyclized with bu...
36 92106680 Process for preparing 2,6-substitution-5-fluoronicotinic alkyl acetate
Alkyl 2,6-substituted-5-fluoronicotinoyl-acetate is prepared through such technological steps as decarboxylating condensation of 2,6-substitution-5-fluoronicotinic chlorine as start raw ...
37 92106679 Improved process for preparing 6-fluoro-1,8-naphthyridine derivatives
Alkyl 2,6-substituted-5-fluoronicotinoyl-acetate as start raw material is cyclized with triethyl orthoformate or catalytically chloridized and cyclized with phosphorus oxychloride /DMF t...
38 92109428 Process for preparing n-sulfonyl-tetrahydro-[1,3]-dioxepino[5,6-b]-azirines
Cis-2-butene-1,4-diol is used as start raw material. Through 4,7-dihydro-1,3-dioxepin and trans-6-amido-5-chloro-1,3-dioxacyclo-heptane, tetrahydro- 1,3]-dioxepino 5,6-b]-azacyclopropen...
39 92110026 Process for preparing N-(tetrahydrofuran-2-formyl) piperazine
N-(tetrahydrofuran-2-formyl) piperazine that is a key intermediate during preparing an antihypertension medicine is prepared by reaction of tetrahydrofuryl-2-formyl chloride with piperaz...
40 92109846 Synthesization of 2-[3,6-bis (N-ethylamino)-2,7-dimethyl-3-hydrogen-oxyanthrace...
Ethyl 2- 3,6-bis (N-ethylamino)-2,7-dimethyl-3-hydro-oxyanthracene-9]-benzoate hydrochloride is synthesized through alcohol alkylation of o-methylaniline in the presence of catalyst, rec...
41 92110050 3-piperidinylmethylcarboxylate substituted indoles
A process to prepare indole derivative, quaternary ammonium derivative, piperidine N-oxide, and pharmacologically acceptable salt and solvate of a compound with formula described in pres...
42 92110360 Process for preparation of benzimidazole compound
The present invention relates to a preparation method of benzimidazole compound. It is made up by using acetoaminophenol as the raw material and making that pass through the processes of...
43 92109852 Preparing technology for rubber vulcaniztion promoter
A kind of novel one-step synthesis process for production of N-tert-butyl-2-benzothiazole-hyposulfamide. The features is that the thiol-benzothiazole, approprite amount of water and non-...
44 92110282 Heterocyclic compounds
Heterocyclic compound with a structural formula described in specification is an antibiotic predn. for oral application.
45 92110157 Preparation of dihydropyridine derivative
The present invention relates to a dihydropyribine derivative. This compound can prevent calcium ion from inward flowing into cell, and has the notable functions of dilating blood vessel...
46 92110301 Process for purification of hematoidin
This invention relates to a preparing method of bilirubin. It involves bile sucking, primary products preparing, stratified separating out, recovery of distillation, separating out choli...
47 92110017 Heterocyclic compounds
Heterocyclic compound, its salts and metabolism-unstable ester and solvent, and their preparing processes are disclosed. Said heterocyclic compound has a general chemical formula describ...
48 94191893 Heterocyclic compounds and their preparation and use
The present invention relates to therapeutically active azabicyclic compounds of Formula (1), wherein Z
49 92108554 Z'Z'-di-delta to the power 2-oxazoline synthetic process
Process to prepare 2,2'-bis- delta (2)-oxazoline by cyclization reaction of bis-beta-chloroethyl oxamide features that cyclization reaction takes place in alkaline methanol or alcohol so...
50 94191457 Condensed nitrogen heterocycles, methods of preparing them and their use as pes...
The invention relates to the compounds of formula (I), the process of preparing such compounds, agents containing them and their use as pesticides, fungicides and antimycotics. The groups...
51 94191420 Benzopyranes as potassium channel openers
The present invention relates to compounds of formula (I) and the pharmaceutically acceptable salts thereof, wherein the dashed line represents an optional covalent bond; X is O, NH, S or...
52 94191430 Process for preparing acryl-piperidine carbinols
A process for the preparation of a compound of formula (I) in which R3 is hydrogen, C1-6 alkyl or C1-6 alkylaryl, by using diborane, of a compound of formula (II), in which R3 is as defin...
53 94191580 Process to prepare herbicidal bicyclic triazoles
The invention relates to a process to prepare compounds of Formula (I), wherein Q and Z are defined within. This invention also relates to intermediates of Formula (II) and (IV), wherein ...
54 94191581 1-phenyl-imidazol-2-one biphenylmethyl compounds for treatment of circulatory d...
The invention provides a class of 1-phenyl imidazol-2-one biphenylmethyl compounds or a stereoisomer or a tautomer thereof or a pharmaceutically acceptable salt thereof, and the use in tr...
55 94191448 Crystalline ceftiofur free acid
Crystalline free acid form of the cephalosporin antibiotic ceftiofur (I), processes for its manufacture, and pharmaceutical compositions containing it are provided.
56 94191805 Method and apparatus for extracting taxol from source materials
Method and apparatus are described for isolating natural therapeutic compositions from source materials. The method and apparatus isolate natural therapeutic compositions from waxes and o...
57 94103014 Process for preparing pyrrolizine derivaties
The invention relates to the method for preparation of 5-aroyl-2,3-dihydro-1H-dipyrrole-1,1-dicarboxylic ester and its intermediates.
58 94191555 Substituted nitrogen heterocycles and their use as pesticides
The invention relates to new substituted nitrogen heterocycles of formula (I), in which R
59 94103149 Dihydrobenzofuran derivatives, their production and use
There are disclosed novel dihydrobenzofuran derivatives of the formula: (I) wherein A, X, Y, Z, R1 and R2 are each as defined in the description. Also disclosed are a herbicidal compositi...
60 94191533 Process for the preparation of condensed carbapeneme derivatives
A process for the preparation of antibacterial compound (I) or a salt thereof which comprises hydrogenolysis of the novel compound of formula (II) and if necessary or desired isolating th...
61 94191532 Process for the preparation of condensed carbapeneme derivatives
A process for the preparation of the antibacterial compound of formula (I) or a salt thereof, which comprises the thermal cyclisation of a compound of formula (II), wherein R is a carboxy...
62 94191502 Enantioselective synthesis of 5,6-dihydro-(S)-4-(ethylamino)-(S)-6-methyl-4H-th...
A key step in the synthesis of 5,6-dihydro-(S)-4-(ethylamino)-(S)-6-methyl-4H-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-dioxide and related compounds is a Ritter reaction with an unexpecte...
63 03120639 Taxotere trihydrate
4-acetoxy-2alpha-benzoyloxy-5beta, 20-epoxy-1beta, 7beta, 10beta-trihydroxy-9-oxo-11-taxen-13alpha-y1(2R,3S)-3-t-butoxycarbonylamino-3-phenyl-2-hydroxypropionate trihydrate obtained by a...
64 94192207 Heterocycle-containing amidine derivatives, their preparation and use
Compounds having the formula (I), which is explained in detail in the description, may be prepared by conventional methods and used in standard galenic compositions for therapeutical purp...
65 94191548 Method for purifying taxoids
A method for purifying taxoids (Taxotère, 10-deacetylbaccatin III) by centrifugal partition chromatography.
66 94191613 Imidazoloquinoxalinone derivatives as eaa antagonists
Described are imidazoloquinoxalinones of the formula (I) in which A and R1 to R6 are as defined in the description, plus their preparation. The compounds described can be used to control ...
67 94191640 Imino-substituted phenylacetic acid amides, their preparation and fungicides co...
Described are compounds of the formula (I) in which Y is oxygen or an NR6 group; Z
68 94192241 Tetracyclic compounds as dopamine agonists
A tetracyclic compound of formula (I) wherein A and the atoms to which it is attached and the optional double bond represent a mono- or di-heterocyclic ring selected from formulas (a), (b...
69 94192117 Anti-tumor compounds, pharmaceutical compositions, methods for preparation ther...
The present invention is directed to novel taxanes useful as chemotherapeutic agents or their precursors. Processes for preparing the novel taxanes include coupling reactions, in the pres...
70 94103195 New process for preparation of vitamin C from special vitamin C sodium
The present invention relates to a process for preparing iso-Vc by using iso-VcNa passing through cation exchange resin. Its iso-VcNa raw material adopted by said invention is one of fou...
71 94191561 Cephalosporin derivative
A cephalosporin derivative represented by general formula (I) or a salt thereof, wherein R
72 94191671 HIV protease inhibitors in pharmaceutical combinations for the treatment of AIDS
Compounds of formula where R1 and R2 are independently hydrogen or optionally-substituted C1-4alkyl or aryl, or R1 and R2 are joined together to form a monocyclic or bicyclic ring system,...
73 94192110 Crystalline benzathine salt of cefonicid and its preparation
A new salt form of cefonicid and its method of preparation is disclosed.
74 94191722 Novel 2-nitromethylidene/2-cyanimino/2-nitro-imino-pyrrolidines and piperidines...
Dissociation or salt compounds of formula (I), wherein A is an unsubstituted or substituted aromatic or non-aromatic, monocyclic or bicyclic heterocyclic radical wherein a ring nitrogen a...
75 94191644 Photochromic naphthopyran compounds
A naphthopyran compound of general formula (I) wherein R1 represents a group of the formula -NR2R3 wherein each of R2 and R3, which may be the same or different, independently represents ...
76 94192113 4-arylisoindole analgesics
The 4-arylisoindoles of the formula (I)are effective analgesics including stereoisomers and pharmaceutically acceptable salts thereof, wherein (II) is (III), (IV) or (V); with the proviso...
77 94191664 Heterocyclic derivatives as platelet aggregation inhibitors
Compounds of formula (I) and metabolically labile esters and amides thereof, and pharmaceutically acceptable salts thereof, in which R
78 94103439 Substituted 1-aryltriazolinones
The invention relates to novel substituted 1-aryltriazolinones of the general formula (I). The invention also concerns preparation method and their intermediates,and their use as herbicid...
79 00101036 Process for preparation of amino-triazine
The present invention relates to a process for the preparation of aminotriazine derivatives of the formula I by the solvolysis of compounds of the formula II in the presence of gaseous hy...
80 94103365 Novel cephalosporin derivatives and processes for preparation thereof
The present invention relates to novel cephalosporin derivatives or pharmaceutically acceptable non-toxic salts used as antibiotics. Wherein in the chemical formula, R' is a hydrogen or ...
81 94103369 Method for preparing tetrahydro-carbazolone derivative
The process for peparing a medical heterocyclic compound, tetrahydro-carbazolone derivative features simple method, shorter preparing period and mild reaction condition.
82 94103732 Sulfonamido heterocyclic thrombin inhibitors
The invention provided a kind of thrombin inhibitor sulfonamido heterocycle having structure as shown, it includes all its stereo isomer and salt, where symbols n, G, R, R1, R2, R3 and R...
83 94192237 7-azabicyclo-[2,2,1]-heptane and-heptene derivatives as analgesics and anti-inf...
7-Azabicyclo[2,2,1]-heptane and -heptene derivatives with analgesic or anti-inflammatory activity are disclosed that can be administered to a mammal, including a human, to treat pain and ...
84 94191728 Heterocyclic derivatives in the treatment of ischaemia and related diseases
Novel substituted piperidines and piperazines or the pharmaceutically acceptable acid addition salts thereof, are calcium and/or sodium channel antagonists useful for treating mammals hav...
85 94103416 Drug composition for curing dysmnesia and dementia and its preparing method
The present invention provides a medicine composition for curing benign dysmnesia, encephalic organic disturbance and dementia and its preparation method. Said composition contains huper...
86 94191705 Pyrazole derivative
Pyrazole compounds of formula [1] and their tautomers and salts: [1] (wherein R1 is an alkyl group, etc.; R2 is a carboxyl group, etc.; R3 is a halogen atom, an alkyl group, a phenyl grou...
87 94112112 Thiophene containing substituting fluoroalkoxyl group and fluoroalkyl-ether and...
The structure formula of the substituting thiophene compound is shown as figure, where n denotes integer of 0-2, m denotes integer of 1-3, and is prepared byreaction of 3-bromothiophene ...
88 94191850 Indole derivatives as 5-H1-like agonists for use in migraine
Compounds of formula (I), pharmaceutically acceptable salts thereof, and pharmaceutically acceptable solvates (including hydrates), wherein R
89 94104204 Method for preparation of 4-hydroxy coumarin
The method for preparation of 4-hydroxy-coumarin is that the intramolecular cleisen condensation reaction is conducted by using methyl acetyl-salciylate as raw material, liquid paraffin ...
90 94191870 3-halo-3-heteroaryl carboxylic acid derivatives, methods of preparing them and ...
The invention discloses 3-Halo-3-hetarylcarboxylic acid derivatives having the formula I in which R is a formyl group, a group CO2H or a radical which can be hydrolyzed to COOH, and the r...
91 94191867 3-(hetero)aryl carboxylic acid derivatives, methods of preparing them and inter...
The invention concerns 3-(Hetero)aryl carboxylic acid derivatives of formula (I) in which R is a formyl group, a CO2H group or a group which can be hydrolysed to give a COOH group and the...
92 94191807 10,11-methanodibenzosuberane derivaties used as chemosensitizing agents
10,11-Methanodibenzosuberane derivatives, i.e., the compounds of formula (I), wherein A is -CH2-CH2-, -CH2-CHR
93 94191773 1,5-benzodiazepine derivatives having CCK antagonistic or agonistic activity
Novel benzodiazepine compounds of formula (1) which exhibit agonistic activity for CCK-A receptors enabling them to modulate the hormones gastrin and cholecystokinin (CCK) in mammals for ...
94 94191871 3-(hetero)aryloxy(thio) carboxylic acid derivatives, method of preparing them a...
3-(Het)aryloxy(thio)carboxylic acid derivatives of the formula I where R1 is hydrogen, COOH or a radical which can be hydrolyzed to give COOH; R2 and R3 are each halogen, alkyl, haloalkyl...
95 94192149 Thioindole pyperidinyl derivatives used as antalgics
The invention is related to derivatives of formula (I), their addition salts and their therapeutic use, namely as drugs with antalgic properties.
96 94195129 Dimethylfurancarboxanilide derivative
A dimethylfurancarboxanilide derivative of general formula wherein R1 and R2 may be the same or different from each other and each represent hydrogen, C2-C6 alkyl, C3-C6 cycloalkyl, C3-C...
97 94192180 Herbicidal (4-substituted pyridyl)-3-carbinols
(4-substituted pyridyl)-3-carbinols of formula (I), wherein R is hydrogen, or an acyl, alkyl or carbamyl group exhibit desirable preemergent and postemergent herbicidal activity. Also dis...
98 94112129 Protein and polypeptide mercapto-polyglycol (PEG) reagent
The PEG reagent, N-maleimide amino n-caproic acid-mPEG ester, is used for modifying solubility, stability and immunogen nature of protein and polypeptide and also for preparing medical P...
99 94191934 Risperidone pamoate
The invention relates to a compound which is a pamoate acid addition salt of risperidone, compositions comprising the same and processes for preparing said compound and compositions.
100 94191925 4-aryl-4-hydroxy-tetrahydropyrans and 3-aryl-3-hydroxy-tetrahydrofurans as 5-li...
The invention concerns ether derivatives of the formula I Q1-X-Ar-Q2I wherein Q1 is an optionally substituted 9-, 10- or 11-membered bicyclic heterocyclic moiety containing one or two nit...
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