Abstract: A preventing and treating agent for heart failure is disclosed, which comprises a compound represented by formula (I): ##STR1## wherein R represents an imidazolyl group, a thiazolyl group or a pyridyl group; n represents 1 or 2; and m represents an integer of from 1 to 4, or a pharmaceutically acceptable salt thereof as an active ingredient.

Abstract: A topical preparation containing, as an active ingredient, 9-fluoro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-2,3-dihydro-7H-pyrido[ 1,2,3][1,4]-benzoxazine-6-carboxylic acid or a salt thereof.

Abstract: A sulfated polysaccharide DS4152 useful as an angiogenesis inhibitor or antitumor agent is provided selectively. As the sodium salt, it has the following physicochemical characteristics. Molecular weight by the gel filtration method: 29,000.+-.3,000. Elemental analysis: C: 24.42-25.76%, H: 3.34-3.98%, N: 0.51-0.89%, S: 10.6-11.7% and P: 0.77-1.06%. Sugar and protein contents: Sugar content (%): 57.+-.3 (by phenol sulfuric acid method; standard: galactose). Protein content (%): 1.+-.0.5 (by the Lowry-Folin's method; standard: bovine serum albumin). Specific rotatory power [.alpha.].sub.D.sup.25 : -37.degree..+-.1.degree. (0.5% aq. solution). Characteristic absorption bands in infrared absorption spectrum: 1240, 840 (shoulder), 810 (cm.sup.-1 ; KBr).

Abstract: Novel tricyclic triazolopyrimidine compounds represented by formula (I) shown in the specification and physiologically acceptable salts thereof are disclosed. These compounds have an excellent anti-allergic activity and are useful for treatment and prophylaxis of allergic diseases.

Abstract: The invention relates to a process for producing a (.+-.)-3-alkyl-3,4-dihydro-2H-[1,4]benzoxazine derivate of formula (II) by stepwise racemization procedure. ##STR1## The invention further provides a process for optical resolution through the formation of a salt between a (.+-.)-benzoxazine compound and an optically active form of camphor-10-sulfonic acid. Without requiring the conventional expensive resolution reagents, this process not only assures production of an optically active isomer of compound (II) in high purity but also permits reuse of the optical resolution reagent.

Abstract: An agent for treatment and prevention of asthma comprising 2-[2-phenyl-2-(2-pyridyl)]ethyl-2-imidazoline or a salt thereof as an active ingredient is disclosed.

Abstract: A novel therapeutic agent for skin ulcers comprising as its active component adenosine-3',5'-cyclic phosphate or a derivative thereof, and a method for the treatment of skin ulcers by using the agent.The therapeutic agent is prepared into various forms such as emulsions, ointments and creams, and is externally applied to the affected part.

Abstract: Novel 4-oxoguinoline-3-carboxylic acid derivatives having the formula ##STR1## wherein X.sup.1 represents a halogen or hydrogen atom, X.sup.2 represents a halogen or hydrogen atom, X.sup.3 represents a halogen atom, and R.sup.1, R.sup.2 and R.sup.3 each represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and physiologically acceptable salts thereof, are disclosed. These compounds have excellent antibacterial activity against gram-positive and gram-negative bacteria and beneficial pharmacokinetic properties.

Abstract: A benzopyran derivative represented by formula ##STR1## wherein: R.sub.1 and R.sub.2 each represents a hydrogen atom, a lower alkyl group, a substituted or unsubstituted cyclic alkyl group, a mono- or di-lower alkylamino group, a substituted or unsubsituted cyclic amino group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group;Y.sub.1 and Y.sub.2 each represents a hydrogen atom, a lower alkyl group, a halogen atom or a trihalomethyl group;Z represents a caroxyl group, a lower alkoxy-carbonyl group, a tetrazolyl group, a hydroxyl group or --CONR.sub.3 R.sub.4 wherein R.sub.3 and R.sub.4 each represents a hydrogen atom or a lower alkyl group;n represents an integer of from 1 to 6; andthe bond between the 2- and 3-positions represents a single bond or a double bond;provided that a combination wherein Y.sub.1, Y.sub.2, and R.sub.2 each represents a hydrogen atom, R.sub.

Abstract: Novel cephalosporin derivatives and salts thereof are disclosed. These compounds exhibit excellent antimicrobial activity against a wide variety of Gram-negative and Gram-positive bacteria and also have other excellent characteristics as a medicine such as stability and low toxicity. These compounds can be administered in a form of subcutaneous, intravenous or intramuscular injections.

Abstract: This invention relates to a novel influenza vaccine comprising a complex of HANA antigen and an MDP derivative.The novel vaccine is prepared by mixing an influenza HANA antigen and at least one MDP derivative in a suitable medium; solubilizing the resulting mixture with a surface active agent capable of being removed by dialysis, the solubilization being conducted in the presence or absence of cholesterol, lecithin and dicetyl phosphate or a mixture thereof; and then removing the surface active agent therefrom by dialysis to obtain an influenza vaccine comprising artificial vesicle-like particles of a complex of HANA antigen and MDP derivative, where the MDP derivative forms a membrane of the particle (corresponding to the lipid membrane of natural influenza virus particle) on the surface of which there exists the HANA antigen being bonded to the MDP derivative so as to form the complex.

Abstract: A pyranoindolizine derivative represented by the following general formula (I): ##STR1## wherein R means a hydrogen atom or hydroxyl group and Q denotes >C.dbd.O or ##STR2## with a proviso that Q is other than >C.dbd.O when R is a hydrogen atom. Its preparation process is also described.

Abstract: Benzocycloalkane derivatives of the formula (I) ##STR1## wherein: Z represents a methylene group or an ethylene group, either one of R.sup.1 and R.sup.2 represents --(CH.sub.2).sub.m --COOR.sup.3 and the other represents ##STR2## wherein R.sup.3 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, n represents an interger of 1 to 6 and m represents an interger of 0 to 5, and the physiologically acceptable salts thereof; having a strong and selective inhibition activity of thromboxane A.sub.2 synthesis.

Abstract: An agent for treatment and prevention of nephritis comprising at least one imidazoquinazoline compound represented by formula ##STR1## wherein R.sub.1 represents a dialkylamino group having 1 to 6 carbon atoms in each alkyl moiety, or an unsubstituted or substituted cyclic amino group; and R.sub.2 represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms, or a salt thereof as an active ingredient.

Abstract: A method for treating and preventing retinopathy which comprises administering a therapeutically effective amount of 2-(2-phenyl-2-(2-pyridyl))ethyl-2-imidazoline or a pharmaceutically acceptable salt thereof to a patient having retinopathy is disclosed.

Abstract: A method for producing liposomes which comprises mixing liposome membrane components with a water-soluble non-volatile solvent and, then, dispersing the mixture in an aqueous medium. The pharmaceutically acceptable liposome preparation as a drug delivery system can thus be produced with efficiency on an industrial scale.

Abstract: Muramyldipeptide active ester derivatives represented by the formula: ##STR1## wherein R.sub.1 represents a straight or branched chain fatty acid residue having 2 to 30 carbon atoms; R.sub.2 represents an active ester residue; and "Acyl" represents an acyl group having 2 to 6 carbon atoms. These compounds are applicable as haptens for the immunotherapy and exhibit antitumor activity.

Abstract: Muramylpeptide active ester derivatives represented by the formula: ##STR1## wherein R.sub.1 represents a hydrogen atom or a fatty acid residue having from 2 to 10 carbon atoms; --COR.sub.2 represents an active ester group; R.sub.3 represents a fatty acid residue having from 1 to 10 carbon atoms; X represents an alanine, N-methylalanine or valine residue; "Acyl" represents a fatty acid residue having from 2 to 6 carbon atoms; and n represents an integer of from 1 to 6. These compounds are applicable as haptens for the immunotherapy and exhibit antitumor activity.

Abstract: Benzocycloalkane derivatives of the formula (I) ##STR1## wherein: Z represents a methylene group or an ethylene group, either one of R.sup.1 and R.sup.2 represents --(CH.sub.2).sub.m --COOR.sup.3 and the other represents ##STR2## wherein R.sup.3 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, n represents an interger of 1 to 6 and m represents an interger of 0 to 5, and the physiologically acceptable salts thereof; having a strong and selective inhibition activity of thromboxane A.sub.2 synthesis.

Abstract: Novel triazolopyrimidine compounds represented by the formula (I) and physiologically acceptable salts thereof are disclosed. These compounds have an excellent anti-allergic activity in oral administration and are useful for treatment and prophylaxis of allergic diseases such as bronchial asthma, allergic gastro-intestinal disorders, allergic rhinitis, hay fever, urticaria and the like.