Method to produce a kind of driamycin
It is an improved method to produce the bydrochloride of the compound. The raw material used is N-trifluoroacetyla driamgcin, it is first oxidized on the C-4'position to make the 4'-keto...
9a-aza-9a-homoerythromycin derivatives
Certain novel 9-deoxo-4"-deoxy-4"-amino-9a-aza-9a-homoerythromycin A derivatives; a method of treating a bacterial infection in a mammalian subject using the novel erythromycin A derivat...
Novel process for producing etoposide
The invention relates to the method of preparing etoposide (4'-demethyl epipodophyllotoxin-9-4,6-0-ethylidene-beta-D-pyranose). Compounds with the general formula of 4'-haloacetyl-4'-dem...
6
85104026
Prepn. of Bio-surface active agent
Under optimum culture conditions, with properly regulated metabolism and appeopeiate carbon and nitrogen ratio. Arthrobacter gives high yield of alginate sacharide esters. The latter can...
Improved process for preparation of 4'-deoxy-doxorubucin
The present invention concerns an improved process for preparation of 4'-deoxy doxorubucin from 4'-epi-N-trifluo roacetyl donorubucin as starting material. The latter is dissolved in anh...
9
91102374
Preparing method for ganglioside derivatives
The invention functional nurve ganglio-resin glycoside derivatives includes the ester group and acid amide group of the murve ganglio-resin glycoside ansd supper amidation group derivati...
10
91102649
Preparation method for ganglioside derivatives
The present invention relates to a novel functional ganglioside derivative comprising esters, amides and per-amiding derivative of ganglioside, the process for preparing the same and med...
11
85104937
Process for preparing ganglioside derivatives
The title compounds, which have new functions, comprise the esters, the amido compounds, and the peracyl derivatives of ganglioside. The invention relates the process for preparing the ...
Process for preparation of flavanone derivatives
The present flavanone derivatives (formula I) and their phosphates or other salts have anti-strain action. The phosphates and the salts produced from seacting with amino sugar antibiotic...
17
85108520
Preparation of haemostatic used in gynaecololgy and obstetrics
The haemostatic of this invention is produced by using a kind of plant belonged to the chonglou genus of lily family, especially dianchonglou, as the mian raw material. The glucosides (V...
18
85108388
Prepn. process for expectorant
The present invention relates to a kind of expectorant which is capable of affecting the rheological property of the expectoration and improving directly the ciliary movement. This expec...
19
85108244
Synthesis of 7-Halo-7-Deoxylincomycins Process for preparing clindamycin and analogs thereof by reacting lincomycin or an analog thereof with a dimethylformamide and an excess of thionyl halide.
Process for preparing glycoside This invention provides a novel compound having a formula. This invention also provides a process for preparing such a compound. The novel compound has excellent immunological activity.
25
86100178
Process for prepn. of glycoside derivatives Novel O-glycosidic compounds useful for therapy or prophylaxis of a wide variety of diseases, for diagnostic use or as research chemicals. Another object of the present invention is to pr...
26
86100608
Process for the preparation of antiviral agents A second-step virus binding receptor is found in nature on the surface of animal and plant cells. This receptor is thought to be needed for virus penetration into target cells. The second...
27
85109548
Process for preparating homodisaccharide hypoglycemic agents The invention describes homonojirimycin glycosides which active as inhibitors of carbohydrate digestive enzymes. The compounds are prepared by the reaction of an appropriately protected h...
Production of cytosine nucleosides A cytosine nucleoside is produced by reacting a peracylcytosine with a hydroxy-protected monosaccharide or a hydroxy-protected nucleoside whose base moiety is other than cytosine and, if ...
Conversion of uracil derivatives to cytosine derivatives A process is disclosed for producing a 4-O-sulfonyluracil derivative of the formula [wherein R1 is hydrogen, halogen, alkyl and alkoxy, R2 is glycosyl having protected hydroxyls; and -SO2...
34
86106828
Digestive tract contractile motion stimulant Disclosed are digestive tract contractile motion stimulants containing compounds, or salts thereof, represented by the following general formula(A). The compounds described above have an ...
Anti-oxidizing compounds, their production and use Novel compounds, D-glucosaccharoascorbic acid and a salt thereof, are disclosed. The compounds, which are prepared by treating 2-keto-D-glucaric acid or an 2,3-O-acetal or ketal thereof w...
37
86108259
Process for preparation of highly pure acarbose A purified acarbose which contains less than 10% by weight of sugar-like secondary components is obtained by column chromatograph of a solution of prepurified acarbose with a pH 4 to 7. T...
Sythetic method for sucrose fatty acid ester
This invention relates to a method to synthesis the sucrose fatty acid ester (abbrev. SE) in solvent. It is prepared through combining fatty acid with simple-alcohol into fatty acid este...
40
87100939
Composition and method for stabilization of dinucleotides A reduced dinucleotide, preferably nicotinamide adenine dinucleotide (NADH), is stabilized in an aqueous base liquid containing propylene glycol, boric acid and a buffer capable of buffer...
41
87100665
Separation of sagamicin by macroreticular polymeric adsorbant
The process is of separating sagamicin, micronomicin, Kw-1062 and XK-62-2 by means of macro reticular polymeric adsorbent. The art comprises such separation processes as feeding, elution...
42
87100536
Derivatives of erythromycylamine New 9-N-substituted derivatives of erythromycylamine, having the nucleus with superior oral activity against Gram-positive pathogens, are provided.
43
87100011
Production method of natrii gluconas
The present invention relates to the production method of natrii gluconas by using glucose as raw material and using catalytic oxidization method. The present invention uses mixed Pd-Pb ...
44
87102397
Improved process for preparing macrolide derivatives This invention provides an improvement in the process for preparing C-20-amino-substituted derivatives of the macrolide antibiotics of the tylosin type by reductively aminating the C-20 a...
45
87102371
Production of fatty acid ester of sucrose
By methyl esterification, synthesis, neutralization, separation, evaporation and two-steps purification, sucrose ester can be obtained by this invention. The total amount of the estersco...
46
87101874
Amino sugar carbonating agents and their preparation Amino sugar carbonating agents are prepared by reacting bicarbonate ions with the amino moiety of glucosamine or galactosamine in aqueous solution to form glucosamine bicarbonate or galac...
47
87101691
Carbocyclic purine nucleosides, their production and use A compound of the formula: wherein R is a hydroxyl group and Y is a purine base, which may be protected, and the salts thereof, which are useful as an antiviral agent.
48
87103731
Process for producing rutin
This rutin prodn. process is a chemical technology for extracting rutin from the buds of Chinese scholartree. The said technology is characterized by that: instead of milk of lime, aq. s...
Method of producing diacetone sorbose A method of producing diacetone sorbose by reacting alpha-sorbose with acetone in the presence of a ketal formation catalyst in acetone, which comprises: carrying out the reaction while c...
51
87103413
Sialic saccharide ceramide and process for preparing them This invention provides a novel compound expressed by the following formula (l) and a method of preparation thereof. The above novel compounds of present invention are useful as a tumor m...
52
87105304
Polycyclic ether antibioties A new acidic polycyclic antibiotic UK-61,689 has a formula or a pharmaceutically acceptable cationic salt thereof. The antibiotic and its cationic salts are active against a variety of mi...
Process for pyrimidine derivatives Compounds of the formula (1) and tautomers thereof, possess antiviral activity and can be used in the form of medicaments for the control and prevention of viral infections. They can be m...
Antiviral compounds The present invention relates to certain 5-substituted pyrimidine nucleosides and pharmaceutically acceptable derivatives thereof, in the treatment and prophylaxis of varicella zoster vir...
58
87107928
Process for preparing libecamycine similarity There are disclosed analogs of the antitumor agent, rebeccamycin, which possess antineoplastic properties against mammalian, particularly experimental animal, tumor systems. The compounds...
59
87107993
Method for preparation of compound correlating with ganglioside The present invention provides ganglioside-related compounds expressed by the following formula (I) (wherein R1 denotes a hydrogen atom or SiR3R4R5 (wherein R3 and R4 each denotes a methy...
60
87106556
Process for producing gynostemium pentaphylla saponin
This invention is a productive technology of the saponin of gynostemma-laxum. In the invention, a number of the whole gynostemma-laxums are cut into small pieces, then immersed into wate...
Immunoglobulin conjugates Immunoglobulin conjugates formed by reacting a difluoronucleoside with an immunoglobulin via an alkane dioic acid linking group.
64
88101000
Substituted alkylamides of teicoplania compounds The present invention relates to substituted amide derivatives of the antibiotic teicoplanin and related compounds, included the pseudoaglycones and aglycone thereof. The compounds of the...
Method of production of D-amino-galactose hydrochloride
D-aminogalactose hydrochloride, a biochemical reagent for the pathological and biochemical study of liver, is used for the duplication of hepatitis model. According to this invention car...
Method for preparing beta-D-phenyl-thioxyloside The present invention relates, by way of novel industrial products, to osides selected from the group consisting of: (i) the beta -D-phenylthioxylosides of the formula: in which R represe...
Preparation of selenide of carragheen
This invention covers the method of preparation of selenide of carragheen. The selenide of carragheen is a hydrosol form of carragheen which is formed after partial substitution of sulfu...
Improvement of antibiotic solvent extraction
This invention belongs to the field of antibiotic solvent extraction. In the current production of antibiotic, butyl acetate, ethyl acetate and butanol are usually used as solvents in so...
Porous wafer for segmented synthesis of biopolymers
A wafer for synthesizing biopolymers which includes a solid phase support material, a reaction chamber which receives and retains the support material and at least one inert porous mater...
Production of sodium salt of propyl mannuronate sulfuric ester
The present invention refers to a method for production of sodium salt of propyl mannuronate sulfuric ester. Sodium alginate is used as the basic raw material to make mannuronic acid thr...
80
88107673
Method of preparation of crystalline xylose
This invention concerns a method of preparation of crystalline xylose. The raw sugar cane bagasse is treated by water and after dehydration, the dehydiated product is hydrolyzed in prese...
81
88107721
Abstraction process for main component of Her ba Lysimachiae
Herba Lysimachiae is an effective herbal medicine in treating urolithiasis and cholelithiasis. A new process is adopted in this invention to extract and purify its main components flavon...
82
88107800
Manufacturing method of monoacetyl and diacetyl spiramycin
The product prepared by use of the said method is monoacetylspiramycin or diacetylspiramycin, but is not the mixture of them both. Under different reaction temp., reaction times and othe...
83
89100033
Method of making acetyl spiramycin
In the preparation process of acetyl foromacidin the N,N-dimethyamino pyridine is used as catalyst. The procedures include extracitng with ester, removing methyl alcohol and refining. Th...
84
89103634
Extraction of natural surfactants from sapindus mukorossi
This invention relates to a productive technology for extracting a natural surfactant, saponin, from the shell of sapindus mukorossi, including such operative processes as dry, hulling, ...
85
89103146
Luminide and macroluminide class of pharmaceuticals
A class of pharmaceutical can react directly with electron carrier or with active matter produced by electron transfer, thus producing molecules possessed of pharmacologic activity. Said...
Process for prepn. of S'-nucleotide from brewery waste yeast
The present invention refers to the prodn. of 5'-mononucleotide from brewery waste yeast. The present method makes the full break-down of yeast ribonucleic acid by increasing yeast concn...
Extraction of lincomycin from fermented liquid
This invention discloses a new solvent extraction system that can selectively extract lincomycin from weakly alkaline fermented liquid containing protein, pigment and other organic and ...
90
89105191
Preparation of copper gluconate crystals
This invention refers to the process for preparing of an organic compound. At present, it is main way for food and copper sulfate additive to supply the copper for human body. Copper glu...
Process and composition for purification of amphotericin B
A unique four-solvent system comprising methanol, dimethylformamide, methylene chloride and water is employed to provide an improved process for the purification and crystallization of a...
93
90101398
Method for solvent extraction of lincolnensin
This invention provides a solvent extracting process of lincolnensin. Wherein octanol is used as extracting agent. Octanol is insoluble with water, thus the loss of solvent is less. At s...
94
90101913
Method of abstracting "qidun" fruit-acid from plants
In this invention, olive acid is extracted from the plant containing triterpene that contains the olive acid. The extraction is completed through three steps: water extraction, hydrolysi...
95
90103875
Process for extraction of sweet stevia by ordinary resin
The invention relates to a process of extracting stevia glycoside from ordinary resin. The prior art includes soaking of dry stevia leaf, purifying, filtering, adsorption, desalting, dec...
96
90102874
Method for synthesis of butylamine kanamycin
The present invention refers to a method for synthesis of butylamine karamycin. The said method uses karamycin A sulphate or its base as starting material, tert. butyl 5-(4,6-dimethyl-2-...
97
90102873
Process for synthesis of antineoplastic medicine-etoposide
The present invention refers to a new process for synthesis of antineoplastic Etoposide (VP16-213). The said process is characterized by short reaction path, high yield, and low cost raw...
98
90103843
After-treatment of methyl glucoside
The present invention provides three methods for aftertreatment of methyl glucoside produced by direct reaction of starch and methanol in the presence of acid catalyst. It can increase p...
99
90104544
Method for deodoring stevioside
The procedures for deodoring sterioside are (a) Defating: stevioside is added with 2-5 times of petroleum ether and extracted with reflux, then filtered; (b) Modification: the filtered p...
100
90103099
Methof of manufacturing lactulose
For the manufacture of lactulose, an alkaline aqueous solution of lactose and borax is prepared and heated at a temperature above 80 deg.C. The lactulose is separated from the resulting ...
