Takeda Chemical Industries, Inc.

Yutaka Kuwada

Kanji Meguro

Hiroyuki Tawada

Hideaki Natsugari

Yoshiaki Sato

Takeshi Fugono

Takashi Sohda

Satoshi Horii

Nariakira Mizokami

Novel 2-methylcephalosporin derivatives and production thereof. These cephalosporin derivatives exhibit excellent antibacterial activities against gram-positive and gram-negative bacteria, thus being of value as a prophylactic or therapeutic agent for infections observed in man and animals.

Process for producing 2-methyl cephem-2-em and 2-methylcephem-3-em

The invention relates to 1-aminomethyl-6-phenyl-4H-s-triazolo[4,3-a][1,4]benzodiazepine compounds useful as sedatives, tranquilizers, anticonvulsants or hypnotics, and processes for their production.

Triazolobenzodiazepine derivatives

The present invention relates to pyrimidobenzodiazepine derivatives of the formula (I) and 2-(N-acetoacetal)aminobenzodiazepine derivatives of the formula (II), which compounds have the following formulas: ##STR1## wherein R.sup.1 represents a hydrogen atom or a lower alkyl group, R.sup.2 represents a hydrogen atom, a lower alkyl group or an aryl group, and rings A and/or B are unsubstituted or substituted by one or more of a halogen, nitro, trifluoromethyl, lower alkyl or lower alkoxy group; including the cases wherein the nitrogen atom at the 6-position of the compound (I) or the 4-position of the compound (II) may be in the form of N-oxide and wherein compound (I) may be in the form of a pharmaceutically acceptable acid addition salt thereof. The present invention also relates to a method of producing these compounds. The compounds (I) and (II) are useful as muscle relaxants, anticonvulsants, sedatives, tranquilizers, etc.

Benzodiazepine derivatives

Novel triazolobenzazepine derivatives of the formula ##STR1## (wherein R.sup.1 and R.sup.2 are hydrogen or alkyl, X is ##STR2## wherein R.sup.3 and R.sup.4 are hydrogen, alkyl, aryl or aralkyl, and R.sup.5 is hydrogen or alkyl), Z is --SR.sup.6, --S(O).sub.n R.sup.6 or --OR.sup.7 (wherein R.sup.6 and R.sup.7 are alkyl or aralkyl, and n is 1 or 2), and Ring A is unsubstituted or substituted with at least one of halogen, lower alkyl, lower alkoxy and trifluoromethyl, and their physiologically acceptable salts have excellent pharmacological activities and are useful as medicines such as muscle-relaxants, analgesics and antiinflammatory drugs.

Triazolobenzazepine derivatives

Thienopyridine derivatives of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and each is hydrogen, an alkyl, an aryl, an aralkyl or a halogen; R.sup.1 and R.sup.2 may, taken together, represent an alkylene group; X is hydrogen or an alkyl; Y is oxygen or sulfur; Z is phenyl which may optionally be substituted; R.sup.3 is hydrogen or an alkoxy; and R is a group of the formula: ##STR2## or of the formula: ##STR3## (wherein R.sup.4 is hydrogen, an acyloxy or a nucleophilic compound residue) or a pharmaceutically acceptable salt thereof are found to have activity against a broad spectrum of gram-positive and gram-negative bacteria, particularly against bacteria of the genus Pseudomonas .

Thienopyridine substituted cephalosporins

Benzodiazepine derivatives of the general formula ##STR1## where R.sub.1 is hydrogen or a hydrocarbon residue of 1-8 carbon atoms, R.sub.2 is hydrogen or lower alkyl and rings A and B are unsubstituted or substituted by nitro, trifluoromethyl, halogen, lower alkyl or lower alkoxy, the nitrogen atom in the 5-position being unsubstituted or substituted by an oxygen atom, useful as muscle relaxants, anticonvulsants, sedatives and tranquilizing agents, and processes for production thereof. Also provided are novel intermediates of the general formula ##STR2## where R.sub.2 has the above meaning, rings A and B are unsubstituted or substituted as above and the nitrogen atom in the 4-position is unsubstituted or substituted by an oxygen atom.

Compounds of the formula ##STR1## wherein R.sub.2 is lower alkyl and each of rings A and B is unsubstituted or substituted by a member selected from the group consisting of nitro, trifluoromethyl, halogen, alkyl and alkoxy, and processes for their preparation.

The title compounds are prepared by reacting a 3-amino-3,4-dihydro-4-hydroxy-4-phenylquinazoline with a reactive derivative of a halogenoacetic acid, reacting the resultant halogenoacetyl derivative with a weak acid, reacting the resultant 2-(3-halomethyl-s-triazol-4-yl)benzophenone with hydroxylamine and subjecting the resultant 2-(3-hydroxyamino-methyl-s-triazol-4-yl)benzophenone to dehydration to effect ring closure.

Methods for the production of 4H-s-triazolo[4,3-a][1,4]benzodiazepine

Novel thienopyridine-carboxylic acid derivatives, which are shown by the general formula ##STR1## wherein R.sup.1 represents hydrogen or a lower alkyl; R.sup.2 represents hydrogen, a lower alkyl or a halogen, or R.sup.1 and R.sup.2, taken together, may represent an alkylene to form a 5- or 6-membered ring with or without alkyl substituents; each of R.sup.4 and R.sup.5 represents hydrogen or a lower alkyl; and their pharmaceutically acceptable salts obtainable when R.sup.4 is hydrogen, which are useful medicines such as chemotherapeutic agents of bacterial infections.

Thienopyridine-carboxylic acid derivatives

There is disclosed a novel heterocyclic compound of the general formula: ##STR1## wherein each of R.sup.1 and R.sup.2 represents hydrogen atom, or an alkyl group which may be substituted by alkyl-substituted amino, hydroxy or alkoxy group, or R.sup.1 and R.sup.2 may form a heterocyclic ring together with the nitrogen atom adjacent thereto; R.sup.3 represents hydrogen atom or a lower alkyl group; P.sub.y represents a pyridyl group; B represents a lower alkylene group which may have lower alkyl group as a substituent; Y represents oxygen atom, sulfur atom or --NH-- group; and ring A is either unsubstituted or substituted by halogen atom, nitro, lower alkyl, lower alkoxy or polyhalo-lower alkyl group. This class of compounds is found to be useful as medicine in human and animal therapy, which act on the central nervous system, for example, muscle relaxants, anticonvulsants, sedatives, minor tranquilizers. There is also disclosed intermediates for the production of said compound.

Benzodiazepine carboxamides and pharmaceutical compositions with central

A benzodiazepine derivative of the general formula: ##STR1## wherein R.sub.1 represents a hydrogen atom, an alkyl group or a carboxyl group which may be esterified or amidated; R represents a hydrogen atom, an acyl group or a lower alkyl group, and each of the rings A and B is unsubstituted or substituted by halogen atom, nitro, lower alkyl, trifluoromethyl or lower alkoxy group, or its pharmaceutically acceptable acid addition salt is found to be useful as medicine in human and animal therapy, which acts on the central nervous system, e.g. muscle relaxants, anticonvulsants, sedatives, tranquilizers etc.

Benzodiazepine derivative and process for producing the same

A novel triazole derivative of the general formula (I): ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, represent alkyl group or aralkyl group and one of R.sup.1 and R.sup.2 may be hydrogen atom, or R.sup.1 and R.sup.2 form a heterocyclic ring together with the nitrogen atom adjacent thereto; R.sup.3 represents hydrogen atom or a hydrocarbon residue; R.sup.4 represents hydrogen atom or a lower alkyl group; Py represents a pyridyl group; and the ring A is either unsubstituted or substituted by halogen atom, nitro, alkyl, alkoxy or trifluoromethyl group, and pharmaceutically acceptable acid addition salts thereof are found to be useful as medicine in human and animal therapy, as these compounds act on the central nervous as for example, muscle relaxants, anticonvulsants, sedatives, minor tranquilizers, etc.

4-Pyridine carbonyl phenyl 1,2,4 triazoles

There is disclosed new thienodiazepine derivatives of the general formula: ##STR1## wherein R.sup.1 represents a carboxyl group which may be esterified or amidated; each of R.sup.2 and R.sup.3 represents hydrogen atom or a lower alkyl group, or R.sup.2 and R.sup.3 may bond to each other to form an alkylene group; R.sup.4 represents a phenyl group which may have substituent; and R represents hydrogen atom, an acyl group or an alkyl group, or its pharmaceutically acceptable acid addition salts. The above compounds are useful as medicine in human and animal therapy, which act on the central nervous system, for example, as muscle relaxants, anticonvulsants, sedatives, minor tranquilizers, etc.

Thienodiazepine derivatives

A novel heterocyclic compound of the general formula: ##STR1## wherein R.sup.1 represents hydrogen atom or a hydrocarbon residue; R.sup.2 represents hydrogen atom or a lower alkyl group; Py represents a pyridyl group; Y represents an ethylene or a trimethylene group which may have lower alkyl group as substituent; Z represents oxygen atom, sulfur atom or --NH-- groups; and the ring A is either unsubstituted or substituted by a halogen atom, nitro, alkyl, alkoxy or trifluoromethyl group, is found to be useful as medicine in human and animal therapy, as these compounds act on the central nervous system, as, for example, muscle relaxants, anticonvulsants, sedatives, minor tranquilizers, etc.

Heterocyclic compounds

Novel benzazepine derivatives of the formula ##STR1## wherein ring A is unsubstituted or substituted by halogen, nitro, alkyl, alkoxy or trifluoromethyl, R is hydrogen or alkyl which may be substituted, X is oxygen or sulfur and Y is -CH.sub.2 -CH.sub.2 - or -CH=CH-, and their pharmaceutically acceptable salts, exhibit excellent pharmacological activities such as analgetic and muscle relaxing activities.

Growing community of inventors

Ashiya, Japan

Yutaka Kuwada