Abstract: There is disclosed a process of producing a 2-cyano-4-oxo-4H-benzopyran compound of the general formula (2): ##STR1## wherein R.sup.1 and R.sup.2 are independently hydrogen, halogen, hydroxy, C.sub.1 -C.sub.5 alkyl, C.sub.1 -C.sub.5 alkoxy, nitro or a group of the RCONH wherein R is C.sub.1 -C.sub.20 alkyl, phenyl, phenyl-substituted (C.sub.1 -C.sub.20) alkyl, phenyl (C.sub.1 -C.sub.20)alkoxyphenyl or (C.sub.1 -C.sub.20) alkoxyphenyl. This production process is characterized in that a carboxamide of the general formula (1): ##STR2## wherein R.sup.1 and R.sup.2 are each as defined above, is reacted with a dehydrating agent in the presence of a pyridine compound of the general formula (4): ##STR3## wherein A.sup.1 and A.sup.2 are independently hydrogen or C.sub.1 -C.sub.5 alkyl.

Abstract: This invention provides bicyclic heterocyclic derivatives and their pharmaceutically acceptable salts useful for the treatment of hypertension, urethral and lower urinary tract contractions, and other disorders. The compounds are also useful for binding .alpha..sub.1 -adrenergic and 5HT.sub.1A serotonergic receptors, in vitro or in vivo.

Abstract: The present invention relates to novel tocotrienols and tocotrienol-like compounds displaying biological activity. The tocotrienols and tocotrienol-like compounds of this invention may be conveniently obtained from biological sources or by chemical synthesis and may be used in pharmaceutical compositions, foodstuffs and dietary supplements. This invention also relates to the use of tocotrienols, tocotrienol-like compounds, and mixtures thereof, as hypocholesterolemic, antithrombotic, antioxidizing, antiatherogenic, antiinflammatory and immunoregulatory agents, or as agents useful to decrease lipoprotein (a) concentration in the blood or to increase feed conversion efficiency.

Abstract: The invention relates to amidinophenylalanine derivatives, to the synthesis of these compounds, to their use and to pharmaceutical compositions which contain these compounds which act as thrombin inhibitors.

Abstract: The invention relates to benzopyran leukotriene B.sub.4 (LTB.sub.4) antagonists and pharmaceutical compositions containing the compounds. The compounds inhibit the action of LTB.sub.4 and are therefore useful in the treatment of LTB.sub.4 induced illnesses such as inflammatory disorders.

Abstract: Processes, and intermediates, for use in preparing the compound of the formula ##STR1## The compounds of formula II are useful in the preparation of cis (+) N-trifluoromethylsulfonyl-3-[4-hydroxy-6-ArO-chroman-3-ylmethyl]-4-methoxy aniline compounds wherein Ar is defined below. The cis (+) N-trifluoromethylsulfonyl-3-[4-hydroxy-6-ArO-chroman-3-ylmethyl]-4-methoxy aniline compounds are useful for inhibiting the production of leukotrienes and/or blocking leukotriene receptors and in the prevention or treatment of asthma, arthritis, psoriasis, ulcers, myocardial infarction and related disease states in mammals.

Abstract: The present invention provides compounds of Formula I, ##STR1## or a pharmaceutically acceptable salt forms thereof, which are inhibitors of acyl-Coenzyme A: cholesterol O-acyltransferase (ACAT), pharmaceutical compositions containing such compounds, processes for the preparation of such compounds, and the use of such compounds as antihypercholesterolemic and/or antiatherosclerotic agents.

Abstract: Cyclohexanedione derivatives of the formula (I), ##STR1## wherein R.sup.1 is a C.sub.1 -C.sub.6 alkyl group, R.sup.2 is a C.sub.1 -C.sub.4 alkyl group, each of R.sup.3, R.sup.4 and R.sup.5 is independently hydrogen or a C.sub.1 -C.sub.4 alkyl group, and n is an integer of 0 to 2, or salts thereof exhibit high selectivity for corn, wheat and barley, and can control gramineous weeds and broad-leaved weeds at low dosages.

Abstract: This invention provides bicyclic heterocyclic derivatives and their pharmaceutically acceptable salts useful for the treatment of hypertension, urethral and lower urinary tract contractions, and other disorders. The compounds are also useful for binding .alpha..sub.1 -adrenergic and 5HT.sub.1A serotonergic receptors, in vitro or in vivo.

Abstract: Imine dyes useful in photographic materials have the formula ##STR1## wherein R.sup.1, E.sup.1, E.sup.2, L.sup.1, L.sup.2, L.sup.3,D and m are defined as in the specification.Solid particle dispersions of dyes of formula (I) that contain at least one base-ionizable functional group such as carboxy, sulfonamido, or sulfamoyl are useful as filter dyes in photographic elements.

Abstract: The invention relates to compounds selected from the group consisting of the formulas: ##STR1## wherein R.sup.2 and Ph are as described herein. These compounds are potent leukotriene B.sub.4 antagonists and are therefore useful in the treatment of inflammatory diseases.

Abstract: The present invention relates to a chromone derivative and an aldose reductase inhibitor comprising said compound as efective component, which is represented by the following formula: ##STR1## wherein R.sub.1 and R.sub.2 each represent a lower alkyl group, etc., R.sub.3 represents an oxygen atom, a sulfur atom, etc., R.sub.7 represents a phenyl group substituted or not substituted, etc., and R represents a hydrogen atom or a lower alkoxy group. The present compounds exhibit superior inhititory action on aldose reductase and are useful for the treatment of various complications of diseases in diabetes, such as cataract, retinopathy, keratopathy, nephropathy, and neuropathy.

Abstract: 2-Amino-4-oxo-4H-benzopyrans I ##STR1## (m=0, 1 or 2; R.sup.1 -R.sup.4 have the meanings stated in the description) and the salts of I, and herbicides which contain 2-(4-hetaryloxy)- and 2-(4-aryloxy)-phenoxyacetic acid derivatives and/or cyclohexenone derivatives as herbicidal active ingredients and 2-amino-4-oxo-4H-benzopyrans I' as antidotes.

Abstract: A compound of formula (I) possesses excellent potassium channel opening activity and is effective on various diseases arising from contractions of blood vessels, bronchial smooth muscles, etc., for example, ischemic heart diseases exemplified by angina pectoris, asthma, pollakisuria, sequela of subarachnoid hemorrhage, peripheral arterioinfarct, and so on. The compound has potent and long-lasting antihypertensive activity, with the onset of the action being slow, excellent activity in increasing renal blood flow, and high safety, and is therefore particularly useful as an antihypertensive. ##STR1## The substituents are as defined in the specification.

Abstract: The present invention is concerned with antiretroviral (e.g. anti HIV-1) compounds having the formula ##STR1## Pharmaceutical compositions containing said compounds of formula (I-a) or (I-b), and processes of preparing said compounds and compositions.

Abstract: Sigma binding site agents having the formula ##STR1## wherein A.sup.1, A.sup.2, A.sup.3, B, y and 2 are defined in the specification, W is halogen, which are novel intermediates useful in preparing the presently binding site agents.

Abstract: New cycloalkylalkylamines which are sigma-receptor ligands of formule (I) ##STR1## in which: R.sub.1 is H or lower alkyl; X and Y are H, OH, lower alkyl, lower alkoxy, halogen or nitrile; V.sub.1 and V.sub.2 together form a double bond attached to an oxygen atom or to a hydroxyimino radical, or are linked as an ethylenedioxy chain; A represents a valency bond, an oxygen atom, a methylene or an ethylene group; m is equal to 0, 1 or 2; n has the value of an integer from 1 to 5. Psychotropic drug which is also useful in gastroenterology.

Abstract: This invention provides certain 1,2,4,5 substituted benzene derivatives containing "acid" substituents derived from cyclic or heterocyclic moieties. These unique compounds are leukotriene B.sub.4 antagonists and formulations of these derivatives, and a method of using these derivatives for the treatment of conditions characterized by an excessive release of leukotrienes.

Abstract: This invention relates to alkanoic acid compounds having phenyl and heteroarylthio substituents which are useful as leukotriene antagonists, processes for the preparation thereof, and pharmaceutical compositions containing such compounds.This invention also relates to methods of treating diseases in which leukotrienes are a factor by administration of an effective amount of the above compounds or compositions.

Abstract: Carbamoyl and oxycarbonyl derivatives of biphenylmethylamines of structure I are angiotensin-II antagonists with balanced AT.sub.1 and AT.sub.2 activity useful in the treatment of hypertension and related disorders and ocular hypertension. ##STR1## where X is --O-- or --N(R.sup.7)--.

Abstract: A novel process for the preparation of aminochromans of the general formula: ##STR1## wherein R is a C.sub.1 -C.sub.4 alkyl group. In the process, a nitrochromanone of the general formula: ##STR2## is hydrogenated with hydrogen in the presence of a hydrogenation catalyst. The resultant aminochromanone (III) is reduced using zirconium oxide/isopropanol to the aminochromene (IV). The latter is finally hydrogenated with hydrogen in the presence of a hydrogenation catalyst to give the final product. The aminochromans are useful intermediates for the preparation of hypolipidaemic pharmaceuticals.

Abstract: The present invention provides tertiary and secondary amine compounds of the formula ##STR1## and the pharmaceutically acceptable salts thereof which are antagonists for alpha-2 adrenoreceptors and which inhibit serotonin (5-hydroxytryptamine, 5-HT) uptake.

Abstract: Sigma binding site agents having the formula ##STR1## which are useful to inhibit sigma binding site-induced activity, pharmaceutical compositions including these agents, and methods of using these agents to inhibit sigma binding site-induced activity in mammals. Also disclosed are novel intermediates useful in preparing the presently invented agents.

Abstract: Compounds of the formula ##STR1## wherein X is O or CH.sub.2 ;Y is O, --CH.sub.2 --CH.sub.2, --CH.dbd.CH--, --C.tbd.C--, or --OCH.sub.2 C.sub.6 H.sub.4 --;Z is --CH.sub.2 --CH.sub.2 --, --CH.dbd.CH-- or --C.tbd.C--;f, h, k, m and t, independently, are 0 or 1;n is an integer from 1 to 12;R.sup.1 is hydrogen, lower alkyl, lower alkenyl, cycloalkyl, or aralkyl; andA is B or --O--B, wherein B is a mono-, di- or tricyclic aromatic or heteroaromatic moiety substituted by the group --COR.sup.2, --(O).sub.t --(W).sub.s --COR.sup.2 or --(CH.dbd.CH).sub.p COR.sup.2 and which may also contain up to 4 additional substituents selected, independently, from the group consisting of halogen, cyano, lower alkyl, lower alkoxy, sulfonamido, alkanoyl, aroyl, --(Q).sub.k --(W).sub.s' --E or --(Q).sub.k --(W).sub.s" --C.sub.6 H.sub.4 --(W).sub.s'" --E, provided that no more than one of said substituents is --(Q).sub.k --(W).sub.s' --E or --(Q).sub.k --(W).sub.s" --C.sub.6 H.sub.4 --(W).sub.s'" --E, and wherein E is COR.sup.2 or R.

Abstract: A novel heterocyclic compound capable of lowering the uric acid levels in plasma and urine having the formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are independently hydrogen, lower alkyl, phenyl or substituted phenyl, or R.sup.1 and R.sup.2 may form a four- to eight-membered carbon ring together with the carbon atom to which they are attached; R.sup.3 is hydrogen or lower alkyl; R.sup.4 is one or two radicals selected from a group consisting of hydrogen, halogen, nitro, lower alkyl, phenyl, substituted phenyl, --OR.sup.5 and --SO.sub.2 NR.sup.6 R.sup.6' ; R.sup.5 is hydrogen, lower alkyl, phenyl-substituted lower alkyl, carboxymethyl or ester thereof, hydroxyethyl or ether thereof, or allyl; R.sup.6 and R.sup.6' are independently hydrogen or lower alkyl; R.sup.

Abstract: Pesticidal substituted oxime ethers of the formula ##STR1## in which R represents in each case unsubstituted or substituted alkyl, cycloalkyl, aryl or heterocyclyl andX represents nitrogen or a CH group.

Abstract: The (3S,4R)-isomer of a compound of formula (E) is disclosed.

Abstract: The present invention relates to novel oxabicyclo ether derivative compounds, compositions containing these ether derivative compounds, and methods of using these compounds or compositions to control the growth of undesired vegetation. More particularly, the present invention relates to a variety of compounds, compositions, and methods of using them which are herbicidally active on a wide variety of weed species and exhibit safety to rice, cereals or broadleaf crops.

Abstract: Novel chroman derivatives of the formula I ##STR1## in which X is O or NR.sup.11,Z is CH.sub.2, O, S or CHHal,R.sup.1 and R.sup.5 are each A,R.sup.2 is H or A,R.sup.1 and R.sup.2 together are also alkylene having 3-6 C atoms,R.sup.3 is OH or OAc,R.sup.4 is H,R.sup.3 and R.sup.4 together are also a bond,R.sup.6 and R.sup.7 are each H, A, HO, AO, CHO, ACO, ACS, HOOC, AOOC, AO--CS, ACOO, A--CS--O, hydroxyalkyl, NO.sub.2, NH.sub.2, NHA, NA.sub.2, CN, F, Cl, Br, I, CF.sub.3, ASO, ASO.sub.2, AO--SO, AO--SO.sub.2, AcNH, AO--CO--NH, H.sub.2 NSO, HANSO, A.sub.2 NSO, H.sub.2 NSO.sub.2, HANSO.sub.2, A.sub.2 NSO.sub.2, H.sub.2 NCO, HANCO, A.sub.2 NCO, H.sub.2 NCS, HANCS, A.sub.2 NCS, ASONH, ASO.sub.2 NH, AOSONH, AOSO.sub.2 NH, ACO-alkyl, nitro-alkyl, cyanoalkyl, A--C(.dbd.NOH) or A--C(.dbd.NNH.sub.2),R.sup.8 and R.sup.9 are each H or A or together are .dbd.O or .dbd.S,R.sup.10 is H, Hal, CHO or CH.sub.2 OH,R.sup.11 is H, A, Ac or CH.sub.

Abstract: Non-peptidyl compounds characterized generally as chromonyl/chromonylalkyl-N-terminal cycloalkoxy-C-terminal amino hydroxy .beta.-amino acid derivatives are useful as renin inhibitors for treatment of hypertension. Compounds of particular interest are of the formula ##STR1## wherein R.sub.1 is selected from ##STR2## wherein each of Y and Z is independently selected from hydrido, chloro, fluoro, methoxy and dimethylamino; wherein n is a number selected from zero through four, inclusive; wherein each of R.sub.2 and R.sub.4 is independently selected from hydrido and methyl; wherein R.sub.3 is methyl or ethyl; wherein R.sub.5 is cyclohexylmethyl; wherein R.sub.6 and R.sub.7 are taken together to form a partially saturated or fully saturated heterocyclic ring containing five to eight ring members with one or two ring members being oxygen atoms and the remaining ring members being carbon atoms, and which heterocyclic ring may be optionally substituted with lower alkyl; or a pharmaceutically-acceptable salt thereof.

Abstract: A process is disclosed for the preparation of (.+-.)-6-cyano-3,4-dihydro-2,2-dimethyl-trans-4-(2-oxo-1-pyrrol idino)-2H-1-benzopyran-3-ol of the Formula (VI) ##STR1## from 4-cyanophenol of the Formula (I) ##STR2## which comprises reacting 4-cyanophenol of the Formula (I) with isoprene, followed with bromination and dehydrobromination steps with formation of intermediates to react with 2-pyrrolidone resulting in obtaining the compound of the Formula (VI).

Abstract: This invention relates to LTD.sub.4 antagonists of the formula: ##STR1## or pharmaceutically acceptable salts thereof, wherein R.sup.1 is methyl, phenyl, ##STR2## wherein X.sub.1 and X.sub.2 may be the same or different and are members of the group consisting of hydrogen, --Cl, --Br, --CF.sub.3, --NH.sub.2, --NO.sub.2, or alkyl of 1-3 carbon atoms; m is 1 to 9; n is 1 to 5; V is --CH(OH)--, or --CH.sub.2 --; W is hydrogen or alkyl of 1-6 carbon atoms; Y is hydrogen or --COCH.sub.3 provided that when W is hydrogen Y is not hydrogen; both Z moieties are --CHO, --COOR.sup.2, --COR.sup.3, --CH(OR.sup.4)--CH.sub.2 OR.sup.4, or CH.sub.2 OR.sup.4 with the exception that when one Z moiety of Formula I is COOR.sup.2, the other Z moiety may be COR.sup.3 ;R.sup.2 is hydrogen, a pharmaceutically acceptable cation, straight or branched chain alkyl having 1-6 carbon atoms, --CH.sub.2 --CH(OR.sup.5)--CH.sub.2 --OR.sup.5, CH(CH.sub.2 OR.sup.5).sub.2 with the proviso that when Z is --COOR.sup.2, the R.sup.

Abstract: A compound of the following formula: ##STR1## wherein: R.sub.1 and R.sub.2 is hydrogen or C.sub.1-4 alkyl or R.sub.1 and R.sub.2 together are C.sub.2-5 polymethylene; R.sub.3 is hydroxy, C.sub.1-6 alkoxy or C.sub.1-7 alkylcarbonyloxy; R'.sub.4 is ethyl, isopropyl, t-butyl or cyclopentyl, and R.sup.1.sub.6 is hydrogen or C.sub.1-6 alkyl.

Abstract: Non-peptidyl compounds characterized generally as chromonyl/chromonylalkyl-N-terminal amino hydroxy .beta.-amino acid derivatives are useful as renin inhibitors for treatment of hypertension. Compounds of particular interest are of the formula ##STR1## wherein R.sub.1 is selected from ##STR2## wherein each of Y and Z is independently selected from hydrido, chloro, fluoro, methoxy and dimethylamino; wherein Q is oxygen atom; wherein n is a number selected from zero through four, inclusive; wherein each of R.sub.2 and R.sub.4 is independently selected from hydrido and methyl; wherein R.sub.3 is methyl or ethyl; wherein R.sub.5 is cyclohexylmethyl; wherein R.sub.6 is hydroxy; and wherein R.sub.7 is isobutyl or ethyl; or a pharmaceutically-acceptable salt thereof.

Abstract: A polysaccharide derivative prepared by replacing a part or the whole of hydrogen atoms of hydroxyl and/or amino groups of a polysaccharide with one or more atomic groups represented by the following formula (1), (2) or (3) is new and useful for the separation of optical isomers: ##STR1## wherein the number of carbon atoms constituting R is 1 to 30 and R is a group having at least one asymmetric center.

Abstract: Amine represented by the following formula (1), or their acid addition salts or their quaternary ammonium salts. ##STR1## The amines of formula (1) or their pharmaceutically acceptable acid addition salts or quaternary ammonium salts are useful for the treatment and prevention of heart diseases of animals, particularly arrhythima, myocardial infarction, angina pectoris and heart failure and psychoneurological diseases.

Abstract: Novel aromatic amine derivatives of specific structure are useful intermediates for herbicides. The aromatic amine compounds have the structure shown by formula [I]: ##STR1## wherein Ar and A are as defined herein.

Abstract: A compound having the formula (I): ##STR1## wherein A is --CH.sub.2 --, --O--, or --S--; R.sup.1 is CH.sub.3 or OCH.sub.3 ; R.sup.2 is hydroxy or carboxy which may be optionally esterized or amidated; R.sup.3 is H or a lower alkyl; and n is 0 or an integer of 1 to 6 or a pharmaceutically acceptable salt thereof.

Abstract: The present invention provides an industrially valuable method for preparing an optically active 3,4-dihydro-3,4-epoxy-2H-1-benzopyran compound which is useful as a starting material for an optically active benzopyran compound with antihypertensive, coronary blood flow-increasing activities and the like, and also provides a diastereometric ester compound with a 3-halo-4-hydroxy-2H-1-benzopyran compound which is useful as an intermediate for said epoxy compound.

Abstract: Compounds of the formula ##STR1## in which: Z represents a halogen or a cyano, acetyl, trifluoroacetyl, nitro, C.sub.1 -C.sub.4 alkylthio, carboxyl, phosphono, dialkoxyphosphonyl or alkoxycarbonyl group, the alkylthio and alkoxy groups containing from 1 to 3 carbon atoms;R.sub.1 denotes a hydroxyl group and R.sub.2 represents hydrogen, or R.sub.1 and R.sub.2 taken together form an additional bond between the carbon atoms by which they are carried; andR.sub.3 representsa group NH--X--R.sub.4, in which X denotes a direct bond or an SO.sub.2 group and R.sub.4 represents a phenyl group which is unsubstituted or monosubstituted or disubstituted by a halogen, a nitro group, a C.sub.1 -C.sub.4 group, a trifluoromethyl group, an amino group, a group --N(Alk).sub.2, a group --COOAlk or a group OAlk, Alk denoting a C.sub.1 -C.sub.4 Alkyl group;a group --S--R.sub.5, in which R.sub.5 represents a C.sub.1 -C.sub.4 alkyl group, a C.sub.3 -C.sub.

Abstract: Novel chroman derivatives of the formula I ##STR1## in which R.sup.1 to R.sup.6 and Z have the meanings given in Patent Claim 1, and their salts show effects on the cardiovascular system and can be used for the treatment or prophylaxis of cardiac insufficiency, angina pectoris, high blood pressure, incontinence and alopecia.

Abstract: The invention relates to chroman derivatives of the formula I ##STR1## in which R.sup.1 is A,R.sup.2 is OA,R.sup.3 is OH,R.sup.4 is H, orR.sup.3 and R.sup.4 together are a bond,R.sup.5 is a 2-oxo-1,2-dihydro-1-pyridyl or 2-oxo-2,3-dihydro-4-pyrodyl radical which is optionally monosubstituted by A,R.sup.6 is CN,R.sup.7 and R.sup.8 are each H,Z is O, NH or a bond, andA is alkyl having 1-6 C atoms,or a physiologically acceptable salt thereof.

Abstract: The present invention relates to novel bicyclo ether derivatives, to compositions containing them, and to their method of use especially to control the growth of undesired vegetation in rice.

Abstract: Substituted six-membered benzo-fused heterocycles of the formula (I) ##STR1## in which: X=0, NH, S.fwdarw.(O).sub.n (n=0 or 2);R.sub.1 is phenyl, phenyl substituted by methoxy, hydroxy, chlorine, fluorine, diethylaminoethoxy, phenoxy, 2-methyl-4-thiazolyl, 2-amino-4-thiazolyl, phenyl, amino, nitro, terbutyl, carboxymethyl, acetamido, dimethyltriazenyl, benzoyl, hexyl, undecyl, trifluoromethyl, carbamoyl; or R.sub.1 is trifluoromethyl, pyridyl-2,pyridyl-4;R.sub.2 is H, methoxy, hydroxy; orR.sub.1 and R.sub.2 are --CH.dbd.CH--CH.dbd.CH--;R.sub.3 and R.sub.4 are methoxy, hydroxy, fluorine or form a fused benzene ring;CR.sub.5 R.sub.6 R.sub.7 is carboxymethyl, --CH.sub.2 --PO.sub.3 H,--CH.sub.2 --PO(oET).sub.2, 4-methylpiperazinyl, aminomethyl,3-4-5-trimethoxyphenylaminomethyl, acetyl, bromoacetyl, hydroxyethyl, acetoxyethyl, mercaptomethyl, acetylthiomethyl, methoxy-carbopnylthiomethyl, --CH--CONH.sub.2, ##STR2## substituted thiazolyl, subsituted furanone, imidazo(1,2-a)pyridinyl, indolizinyl, or R.sub.4 and R.

Abstract: Described are alkyl-substituted tetra- or hexahydrobenzopyran derivatives defined according to one of the generic structures: ##STR1## wherein Z is a moiety in the alternative either ##STR2## wherein in the moiety having the structure: ##STR3## R' is methyl or ethyl and in the moiety having the structure: ##STR4## one of the dashed lines is a carbon-carbon double bond and each of the other of the dashed lines represent carbon-carbon single bonds; wherein R.sub.1 and R.sub.2 taken separately represent hydrogen or C.sub.1 -C.sub.3 lower alkyl (with the proviso that R.sub.1 and R.sub.2 are not both hydrogen) or R.sub.1 and R.sub.2 taken together complete a C.sub.5 or C.sub.

Abstract: New benz[b]pyranes and pyranopyridines of formula I, ##STR1## wherein the significances of substituents V, T, W, R.sub.3 to R.sub.5, R.sub.9, R.sub.10, m, X, Y and Z are given in claim 1 and their N-oxides and their salts and their use in the treatment of raised blood pressure in the treatment of vascular disorders and other disorders in which a reduction in tension of the smooth muscles is therapeutically useful, as well as in the treatment of hair loss and baldness. Further the compounds are useful in the treatment of asthma and obstructive disorders of the respiratory system as well as in the prophylactic treatment of obstructive or inflammatory airways disease, for example asthma, as well as novel pharmaceutical compositions comprising said K.sup.+ channel activators suitable for such use.

Abstract: The present invention provides an industrially valuable method for preparing an optically active 3,4-dihydro-3,4-epoxy-2H-1-benzopyran compound which is useful as a starting material for an optically active benzopyran compound with antihypertensive, coronary blood flow-increasing activities and the like, and also provides a diastereomeric ester compound with a 3-halo-4-hydroxy-2H-1-benzopyran compound which is useful as an intermediate for said epoxy compound.

Abstract: Fused pyridazine compounds ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are the same or different and respectively hydrogen, a halogen, hydroxy, nitro, amino, cyano, trifluoromethyl, and alkyl, an alkoxy or an alkanoylamino; one of R.sub.a and R.sub.b is a group of the formula--O--Y--NR.sup.5 R.sup.6wherein R.sup.5 and R.sup.6 are the same or different and respectively hydrogen, an alkyl, a phenylalkyl or a substituted phenylalkyl or a group forming a heterocycle together with the adjacent nitrogen atom and Y stands for a straight- or branched-chain alkylene which may have hydroxy group as a substituent on the chain, and the other is hydrogen, or both of R.sub.a and R.sub.b are the same or different and respectively a group of the formula--O--Y--NR.sup.5 R.sup.6wherein R.sup.5 and R.sup.6 are of the same meanings as defined above; W is .dbd.CH-- or .dbd.N; X is CH.sub.2, S, SO, SO.sub.

Abstract: Described are alkyl-substituted tetra- or hexahydrobenzopyran derivatives defined according to one of the generic structures: ##STR1## wherein Z is a moiety in the alternative either ##STR2## wherein in the moiety having the structure: ##STR3## R' is methyl or ethyl and in the moiety having the structure: ##STR4## one of the dashed lines is a carbon-carbon double bond and each of the other of the dashed lines represent carbon-carbon single bonds; wherein R.sub.1 and R.sub.2 taken separately represent hydrogen or C.sub.1 -C.sub.3 lower alkyl (with the proviso that R.sub.1 and R.sub.2 are not both hydrogen) or R.sub.1 and R.sub.2 taken together complete a C.sub.5 or C.sub.6 cycloalkyl moiety; and uses thereof in augmenting or enhancing the aroma of perfume compositions, colognes and perfumed articles including but not limited to solid or liquid anionic, cationic, nonionic or zwitterionic detergents, fabric softener compositions, fabric softener articles, hair preparations, cosmetic powder and perfumed polymers.

Abstract: A compound of the formula: ##STR1## where in x-y is --CO--CH.sub.2 --, --COCR.sup.10-, --CHOHCHR.sup.8-, --CH.dbd.CR.sup.8 -- or ##STR2## and R.sup.9 is various, R.sup.1 and R.sup.8 are alkyl, R.sub.2 is H or alkyl and R.sup.1 and R.sup.2 are alkylene, are disclosed as useful as intermediates for cardiovascular agents.