摘要:
Die Erfindung betrifft ein neues und verbessertes Verfahren zur Herstellung von Ceftriaxondinatriumsalz-hemiheptahydrat der Formel I
bei dem man das 7-Amino-3-{[(2,5-dihydo-6-hydroxy-2-methyl-5-oxo- as -triazin-3-yl)thio]methyl}-3-cephem-4-carbonsäure-dinatriumsalz mit einem reaktiven 2-(2-Aminothiazol-4-yl)-2- syn -methoxy-iminoessigsäure-Derivat wie 2-Benzothiazolyl-thioester in einer wäßrigen Lösung und in Anwesenheit eines geeigneten inerten organischen Lösungsmittels wie Aceton, bei einer Temperatur zwischen 0 °C und 40 °C, insbesondere bei Raumtemperatur umsetzt und anschliessend die gewünschte Verbindung in sehr reiner Form und in hoher Gesamtausbeute isoliert. Ceftriaxon ist ein Cephalosporin-Antibiotikum dritter Generation zur parenteralen Anwendung und ein wertvolles Mittel zur Behandlung von schweren Infektionen.
摘要:
There is disclosed a thermoreversible gel as a liquid pharmaceutical carrier for a galenic formulation having improved thermo-rheological properties and with a gelling temperature interval between about 25°C and 37°C, which comprises
a) 10 to 30 wt.% of block copolymers of α-hydro-ω-hydroxypoly(oxyethylene)/poly(oxypropylene)/poly(oxy-ethylene) (Poloxamer) of the formula wherein a is at least 2 and b is at least 15 and the total portion of hydrophilic polyethylene units amounts to from 20 to 90 wt.% of the copolymer having a molecular weight from 1000 to above 16000; b) 0.01 to 5 wt.% of carboxyvinyl polymer (carbomer) having a molecular weight from 1 x 10⁶ to 4 x 10 ⁶; c) such an amount of a pharmaceutically acceptable base as necessary for adjusting the pH to a value between 4 and 8; d) 20 to about 85 wt.% of water, and e) optionally usual auxiliary agents.
There is also disclosed a liquid galenic formulation containing a therapeutically active amount of an active substance and a thermoreversible gel as a liquid pharmaceutical carrier, the active substance being selected from the group consisting of β-lactamic antibiotics and other antibacterial agents, chemotherapeutics, antiinfectives, topical anesthetics, anti-inflammatory and analgesic agents, antifungal agents, coronary vasodilators, antiviral agents, miotics and anticholinergics, mydriatic agents, antiglaucoma agents, antihistaminics, biogenic peptides and cosmetic agents. At room temperature, such a formulation is in the sol form, which is converted into a gel form at a temperature about the body temperature and thus the application onto eye, skin and mucous membranes of the body cavities as well as the improved biopharmaceutical usefulness are made possible.
摘要:
The present invention discloses a simple one-step process of coating by means of melt granulation for effective masking of bitterness, and a new, patient-friendly oral pharmaceutical formulation suitable also for diabetics, which at the same time also enables variations in the rate and site of the release of the active component.
摘要:
An improved process of synthesis of 5-methoxy-2-[(4-methoxy-3,5-dimethyl-2-pyridyl)methyl]sulfinyl-1H-benzimidazole (omeprazole) by oxidation of 5-methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridyl)methyl]thio]benzimidazole with 3-chloroperoxybenzoic acid in ethyl acetate wherein omeprazole is poorly soluble, at a temperature between -10 °C and 5 °C is disclosed. The second step is a purification of the crude product by dissolution and reprecipitation of the final product.
摘要:
There is disclosed a process for the preparation of compounds having ACE inhibitory action of formula (1) wherein R has the meanings as in claim 1, wherein the stereospecific amino acid N-[1-(S)-ethoxycarbonyl-3-phenylpropyl]-L-alanine is carboxylically activated with a thionyl chloride derivative wherein at least one chlorine atom is replaced by the residue of a heterocylic ambident compound such as imidazole, benzimidazole, 2-methylimidazole or triazole, especially chlorothionylimidazole or thionyldiimidazole, in the presence of an organic solvent to the intermediate novel compound A or to the intermediate novel compound B and the obtained intermediate compound is reacted with an amino acid, preferably in the monosilylated form, most preferably in the disilylated form. Disclosed are also novel compounds useful as starting materials or intermediates in the present process.
摘要:
The present invention belongs to the field of pharmaceutical industry and relates to novel monoclonal antibodies and fragments thereof which are bound to the available surface of a human recombinant TNF-α, TNF-α analogues and TNF-α soluble receptors p55 and p75. Further, the invention relates to stable hybridoma cell lines, which lines are capable of producing such monoclonal antibodies, to a process for the preparation thereof and to pharmaceutical preparations containing them. The invention also relates to a method for the quantitative determination of human TNF-α, free or complexed with soluble TNF-α receptors p55 and p75, and to a kit used therefor. By hitherto disclosed monoclonal antibodies and reagents developed therefrom, it has not been possible to simultaneously determine free TNF-α and its soluble receptors p55 and p75 as well as complexes thereof. Another object of the invention is also the TNF-α analogue TNF-α Cys95His107His108Cys148, which in a complex with TNF-α soluble receptors, is used as an antigen for immunization of mice.
摘要:
Novel heterocyclic acyldipeptides of formula (I) wherein Z represents an oxygen or sulphur atom or a -CH2- group; R1 represents hydrogen, a straight or branched chain 1-4C alkyl, cycloalkyl, cycloalkylalkyl, trifluoromethyl or benzyl group; R2 represents hydrogen, a straight or branched chain 1-4C alkyl, cycloalkyl, alkylcycloalkyl, dialkylaminoalkyl, acylaminoalkyl or benzyl group; R3 represents hydrogen, a straight or branched chain 1-12C alkyl or trifluoromethyl group; R4 and R5, which are identical or different, represent an OR6 or NHR6 group, wherein R6 is hydrogen, a straight or branched chain 1-18C alkyl or benzyl group; Y represents a -CH2-, =CH- or =N- group; A represents a -(CH2)3- group when Y is -CH2-, the two rings being trans-condensed, or a (a) or (b) group, wherein R7 represents H, F, Br, Cl, a straight or branched chain 1-4C alkyl, 1-4C alkoxy, trifluoromethyl, nitro, amino, alkylamino or dialkylamino group, when Y is =CH- or =N-; are prepared by reacting the corresponding heterocyclic carboxylic acid with the corresponding dipeptides using common reagents for the formation of the peptide bond. The heterocyclic acyldipeptides of formula (I) and their pharmaceutically acceptable salts are useful as active compounds in medicaments having immunostimulatory and antitumour activity.
摘要:
Die Erfindung betrifft ein neues und verbessertes Verfahren zur Herstellung von Ceftriaxondinatriumsalz-hemiheptahydrat der Formel I
bei dem man das 7-Amino-3-{[(2,5-dihydo-6-hydroxy-2-methyl-5-oxo- as -triazin-3-yl)thio]methyl}-3-cephem-4-carbonsäure-dinatriumsalz mit einem reaktiven 2-(2-Aminothiazol-4-yl)-2- syn -methoxy-iminoessigsäure-Derivat wie 2-Benzothiazolyl-thioester in einer wäßrigen Lösung und in Anwesenheit eines geeigneten inerten organischen Lösungsmittels wie Aceton, bei einer Temperatur zwischen 0 °C und 40 °C, insbesondere bei Raumtemperatur umsetzt und anschliessend die gewünschte Verbindung in sehr reiner Form und in hoher Gesamtausbeute isoliert. Ceftriaxon ist ein Cephalosporin-Antibiotikum dritter Generation zur parenteralen Anwendung und ein wertvolles Mittel zur Behandlung von schweren Infektionen.
摘要:
Novel inclusion complexes of racemic 1,4-dihydropyridines and enantiomers thereof of the formula
wherein R represents a phenyl group, substituted with nitro, trifluoromethyl, difluoromethoxy group or with one or two halo atoms (especially chlorine), R₁ and R₂, if the same, represent methyl groups and if one of them has the meaning of a 2-aminoethoxymethyl or cyano group, the other represents a methyl group, R₃ and R₄, if different, stand each time for a hydrogen, linear or branched C₁-C₆-alkyl, 2-methoxyethyl, 1-(phenylmethyl)-3-piperidinylphenyl, styryl, furyl, piperidino, 4-diphenylmethyl-1-piperazinylethyl, 5-phenyl-3-pirazolyloxy, 1-phenyl-methyl-3-pyrrolidinyl group or a group of the formula
or, if the same, stand each time C₁-C₄ alkyl group, and of acid addition salts thereof with methyl-β-cyclodextrin, hydroxy-ethyl-β-cyclodextrin or hydroxypropyl-β-cyclodextrin, with the exception of inclusion complexes of racemic dihydropyridines with HP-β-CD, or, in case of amlodipine and enantiomeric nicardipine, also with β-cyclodextrin, are disclosed. Whilst inclusion complexes of racemic dihydropyridines with the cited cyclodextrins are prepared in a well-known manner disclosed in the literature, enantiomerically pure dihydropyridines and inclusion complexes thereof with cyclodextrins are prepared in a novel way by means of preparative column chromatography. The invention also relates to a pharmaceutical formulation containing novel inclusion complexes and to the use thereof as calcium antagonists for the treatment of hypertension, angina pectoris and cerebrovascular disorders.
摘要:
A new inclusion complex of ibuproxam with beta-cyclodextrin is described, which is prepared by adding ibuproxam to a boiling aqueous solution of beta-cyclodextrin, stirring the reaction mixture at the boiling temperature, cooling to a temperature of 0° to 5°C and isolating the title complex. The analgesic, antipyretic and antiinflammatory propeties of the inclusion complex of ibuproxam with beta-cyclodextrin are equivalent to those of ibuproxam alone, but owing to its better water-solubility the complex can be more easily formulated into pharmaceutical forms.