摘要:
The invention relates to a novel process for the preparation of 17 .alpha.-hydroxy-20-oxopregnane derivatives of the general formula (I), ##STR1## wherein R.sub.1 means a hydroxy or an oxo group; andthe dotted lines optionally represent one or more additional valence bond(s), with the proviso that the dotted line in the 4-position and the dotted line in the 5-position cannot each simultaneously be an additional valence bond from steroids having 23,24-dinor-17(20)-dehydrocholan-22-oic -22-oic acid structure.According to the process of the invention a steroid derivative having 23,24-dinorcholan-22-oic acid structure, containing a double bond in 17(20)-position, is transformed to 17.alpha., 20-epoxy-23,24-dinorcholanoic acid, the latter is converted to a reactive acid derivative, which is then reacted with a salt-containing azide ion to yield a 17.alpha., 20-epoxy-23,24-dinorcholanoic acyl azide derivative and the azide obtained is reacted with a mineral or organic acid in an aqueous medium.
摘要:
The invention relates to the new 1-(3-chlorophenyl)-4-hydroxymethyl-7,8-dimethoxy-5H-2,3-benzodiazepine of formula (I) ##STR1## and pharmaceutically acceptable acid addition salts thereof, furthermore to a process for preparing these compounds.The compounds according to the invention possess valuable anxiolytic, antiaggressive and antidepressant effects and have at the same time favorable acute toxicity values, so they can be used to advantage in therapy.
摘要:
The invention relates to novel 9.alpha.-hydroxy-3-oxo-4,24(25)-stigmastadien-26-oic acid derivatives of the formula (I), ##STR1## wherein M stands for hydrogen, C.sub.1-4 alkyl or a pharmaceutically accteptable cation to a process for repairing these compounds and to compositions containing said compounds which exert an anti-hypercholesteremic effect.
摘要:
The invention relates to a process for the production of 9.alpha.-hydroxy-4-androstene-3,17-dione from natural sterols of plant or animal origin or from mixtures thereof by the submerged aerobic fermentation of an enzyme-deficient, sterol-de-grading microorganism in a nutrient medium containing utilizable carbon and nitrogen sources as well as mineral salts, and by isolating the product formed, which comprises transforming the sterol or sterol mixture with the culture of a 1,2-steroid-dehydrogenase deficient strain of new Mycobacterium roseum species which is able to degrade the side-chain of natural sterols, preferably with Mycobacterium roseum sp. nov. 1108/1 deposited at the National Collection of Agricultural and Industrial Microorganisms, Budapest, Hungary under the number NCAIM B (P) 000339, and by isolating and purifying the 9.alpha.-hydroxy-4-androstene-3,17-dione obtained.
摘要:
This invention relates to new peptide derivatives of the general formula (I) A-Xaa-Arg-H, wherein A represents a D- or L-isochroman-1-carbonyl, D- or L-isochroman-3-carbonyl group, furthermore an acyl group of the general formula: D- or DL-A'--CH(OH)--CO, wherein A' represents a phenyl, benzyl, 1-naphthyl, 1-naphthylmethyl, 2-naphthyl, 2-naphthylmethyl, 9-fluorenyl, benzhydryl, cyclohexyl, cyclohexylmethyl, 2-pyridyl, 3-pyridyl or 4-pyridyl group, and Xaa represents an L-prolyl or an L-pipecolinic acid residue, and Arg stands for an L-arginine residue, their acid addition salts formed with an organic or inorganic acid and pharmaceutical compositions containing the same. Furthermore the invention relates to a process for preparing them. The compounds of the invention have valuable therapeutic, particularly anticoagulant, properties.
摘要:
The invention relates to novel N-acyl-2,3-benzodiezapine derivatives of the general formula (I), their stereoisomers and acid-addition salts, pharmaceutical compositions containing them and a process for their preparation. In the general formula (I)R stands for a C.sub.1-6 alkanoyl group optionally substituted by a methoxy, cyano, carboxyl, amino, C.sub.1-4 alkylamino, di(C.sub.1-4 alkyl)amino, pyrrolidino, phthalimido or phenyl group, or by one or more halogen(s); or R is a benzoyl, cyclopropanecarbonyl, C.sub.1-5 alkylcarbamoyl or phenylcarbamoyl group; or R is absent when a double bond exists between the N(3) and C(4) atoms;R.sup.1 means hydrogen; or R.sup.1 is absent when a double bond exists between the N(3) and C(4) atoms;R.sup.2 means a C.sub.1-3 alkyl group; orR.sup.1 and R.sup.2 together stand for a methylene group and no double bond is present between the N(3) and C(4) atoms;R.sup.3 means hydrogen or a C.sub.1-4 alkanoyl group;R.sup.4 represents hydrogen; a C.sub.1-6 alkanoyl group optionally substituted by a methoxy, cyano, carboxyl, amino, C.sub.1-4 alkylamino, di(C.sub.1-4 alkyl)amino, pyrrolidino, phthalimido or phenyl group or by one or more halogen(s); as well as a benzoyl, palmitoyl, cyclopropanecarbonyl, C.sub.1-5 alkylcarbamoyl or phenylcarbamoyl group; andthe dotted lines represent valence bonds optionally being present, with the proviso that no double bond exists between the N(3) and C(4) atoms when both R.sup.3 and R.sup.4 stand for hydrogen.The compounds of the general formula (I) possess valuable central nervous system effects, particularly muscle-relaxant, anticonvulsive and neuroprotective action. Thus, they may be useful for the treatment of various diseases of central nervous system origin.
摘要:
The invention relates to novel N-acyl-2,3-benzodiazepine derivatives of the general formula (I), their stereoisomers and acid-addition salts, pharmaceutical compositions containing them and a process for their preparation. In the general formula (I), defined in this specification, a more complete description of the compounds may be found.The compounds of the general formula (I) possess valuable central nervous system effects, particularly muscle-relaxant, anticonvulsive and neuroprotective action. Thus, they may be useful for the treatment of various diseases of central nervous system origin.
摘要:
The present invention relates to a process for producing recombinant desulphatohirudin by means of culturing microorganisms.Concerning the codon usage of microorganisms the synthesized nucleotide sequences were joined downstream of and in reading frame with isolated promoters and signal sequences, subsequently the expression/secretion cassettes comprising the foregoing elements were inserted into plasmid DNAs allowing the cultivation of cells under selective culture conditions. E. coli, Saccharomyces and Streptomyces species were transformed with the said recombinant plasmids to biosynthesize the thrombin inhibitor desulphatohirudin HV-1 which was then isolated and identified.The thus-produced desulphatohirudin can be used to inhibit blood coagulation.
摘要:
The invention relates to novel N-acyl-2,3-benzodiezapine derivatives of the general formula (I), their stereoisomers and acid-addition salts, pharmaceutical compositions containing them and a process for their preparation. In the general formula (I)R stands for a C.sub.1-6 alkanoyl group optionally substituted by a methoxy, cyano, carboxyl, amino, C.sub.1-4 alkylamino, di(C.sub.1-4 alkyl)amino, pyrrolidino, phthalimido or phenyl group, or by one or more halogen(s); or R is a benzoyl, cyclopropanecarbonyl, C.sub.1-5 alkylcarbamoyl or phenylcarbamoyl group; or R is absent when a double bond exists between the N(3) and C(4) atoms;R.sup.1 means hydrogen; or R.sup.1 is absent when a double bond exists between the N(3) and C(4) atoms;R.sup.2 means a C.sub.1-3 alkyl group; orR.sup.1 and R.sup.2 together stand for a methylene group and no double bond is present between the N(3) and C(4) atoms;R.sup.3 means hydrogen or a C.sub.1-4 alkanoyl group;R.sup.4 represents hydrogen; a C.sub.1-6 alkanoyl group optionally substituted by a methoxy, cyano, carboxyl, amino, C.sub.1-4 alkylamino, di(C.sub.1-4 alkyl)amino, pyrrolidino, phthalimido or phenyl group or by one or more halogen(s); as well as a benzoyl, palmitoyl, cyclopropane-carbonyl, C.sub.1-5 alkylcarbamoyl or phenylcarbamoyl group; andthe dotted lines represent valence bonds optionally being present, with the proviso that no double bond exists between the N(3) and C(4) atoms when both R.sup.3 and R.sup.4 stand for hydrogen.The compounds of the general formula (I) possess valuable central nervous system effects, particularly muscle-relaxant, anticonvulsive and neuroprotective action. Thus, they may be useful for the treatment of various diseases of central nervous system origin.
摘要:
The invention relates to a new (3R)-3-amino-4-carboxybutyraldehyde derivatives of general formula(I) wherein X represents a C1-4 alkyloxycarbonyl, an optionally substituted phenyl-(C1-2 alkyloxy)-carbonyl, a C1-4 alkylcarbonyl or an optionally substituted phenyl-(C1-3 alkyl)-carbonyl group, n represents 1 or 0, Y represents, in the case when n=1, a tetrapeptide of general formula Y4-Y3-Y2-Y1, a tripeptide of general formula Y3-Y2-Y1 or a dipeptide of general formula Y2-Y1 or an amino acid residue of general formula Y1, or in the case when n=0, an &agr;-hydroxyacyl-tripeptide of general formula Q4-Y3-Y2-Y1, an &agr;-hydroxyacyl-dipeptide of general formula Q3-Y2-Y1 or an &agr;-hydroxyacyl-aminoacyl residue of general formula Q2-Y1; wherein Y1-Y4 represent a residue selected from the group of the following L- or D-amino acids: alanine, alloisoleucine, cyclohexyl-glycine, phenyl-alanine, glutamine, histidine, isoleucine, leucine, lysine, methionine, pipecolic acid, proline, tyrosine and valine; and Q2-Q4 represent an acyl group selected from the following &agr;-hydroxyacids of R or S configuration: 2-cycloheptyl-2-hydroxy-acetic acid, 2-cyclohexyl-2-hydroxyacetic acid, 3-cyclohexyllactic acid, 3-phenyllactic acid, 2-hydroxy-3-methylbutyric acid, 2-hydroxy-3-methylvaleric acid, mandelic acid or lactic acid, and salts thereof formed with organic or inorganic bases, and pharmaceutical compositions containing the same. The compounds of general formula (I) of the invention are valuable inhibitors of the interleukin-1&bgr; converting enzyme.