Abstract: The objects of the present invention are:novel organoselenium compounds: aromatic diselenides and selenosulphides;the use of said novel compounds as antioxidant agents;pharmaceutical compositions containing them;a method of preparation of said novel compounds.

Abstract: This invention relates to compounds of formula (I) ##STR1## which are useful as modulators of D.sub.3 receptors, in particular as antipsychotic agents.

Abstract: A retroviral protease inhibiting compound of the formula: ##STR1## is disclosed.

Abstract: The invention encompasses the novel compound of Formula I as well as a method of treating cyclooxygenase-2 mediated diseases comprising administration to a patient in need of such treatment of a non-toxic therapeutically effective amount of a compound of Formula I. ##STR1## The invention also encompasses certain pharmaceutical compositions for treatment of cyclooxygenase-2 mediated diseases comprising compounds of Formula I.

Abstract: This invention relates to certain novel compounds and derivatives thereof, their synthesis, and their use as vitronectin receptor antagonists. The vitronectin receptor antagonist compounds of the present invention are .alpha.v.beta.3 antagonists, .alpha.v.beta.5 antagonists or dual .alpha.v.beta.3/.alpha.v.beta.5 antagonists useful for inhibiting bone resorption, treating and preventing osteoporosis, and inhibiting restenosis, diabetic retinopathy, macular degeneration, angiogenesis, atherosclerosis, inflammation and tumor growth.

Abstract: The present invention relates to certain substituted oxadiazole, thiadiazole and triazole peptoids which are useful as inhibitors of human neutrophil elastase (HNE) for the treatment of HNE-mediated processes implicated in conditions such as adult respiratory distress syndrome, septic shock and multiple organ failure. A series of studies also have indicated the involvement HNE in myocardial ischemia-reperfusion injury, emphysema. HNE-mediated processes are implicated in other conditions such as arthritis, periodontal disease, glomerulonephritis, dermatitis, psoriasis, cystic fibrosis, chronic bronchitis, atherosclerosis, Alzheimer's disease, organ transplantation, corneal ulcers, and invasion behavior of malignant tumors.

Abstract: Compounds of formula (I): ##STR1## wherein: R.sup.1 is methyl, ethyl, isopropyl or sec-butyl; X is carbonyl or methylene; Z is .dbd.C.dbd.(R.sup.2).sub.2 or .dbd.C.dbd.(CH.sub.2).sub.m, in which R.sup.2 is alkyl, and m is integer of from 2 to 5); n is 0 or 1; R.sup.3 is nitro, amino, alkylamino, dialkylamino, alkoxy, alkoxyalkoxy, or a group (iii), (iv), (v), (vi), (vii), (viii) or (ix): ##STR2## , wherein: R.sup.4 represents: alkyl; substituted alkyl; cycloalkyl having from 3 to 6 carbon atoms; substituted cycloalkyl; alkenyl; alkynyl; carbocyclic aryl; or heterocyclic; R.sup.5 is hydrogen atom or alkyl; R.sup.6 represents: hydrogen; alkyl; or cycloalkyl; R.sup.7 represents: alkyl; cycloalkyl; carbocyclic aryl; or aralkyl; or R.sup.6 and R.sup.7, together with the nitrogen atom to which they are attached, are fuised to form heterocyclic ring; Y is oxygen or sulfur; r is 1, 2 or 3; Q is methylene or carbonyl; R.sup.8 is: alkyl or carbocyclic aryl; R.sup.

Abstract: Angiotensin-II antagonists of the formula ##STR1## wherein R.sub.1 is, other than hydrogen and, inter alia, halogen, lower alkyl or cycloalkyl; R.sub.2 is, inter alia, optionally substituted benzimidazol-2-yl, 5,6,7,8-tetrahydro-imidazo?1,2-a!pyridin-2-yl, butanesultam-1-yl, imidazol-4-yl, and tetrahydobenzimidazol-2-yl; R.sub.3 is, inter alia, lower alkyl; and, R.sub.4 is an acidic group, such as carboxyl or tetrazolyl. An exemplary compound is: 4'-?(2-ethyl-4-methyl-6-(5,6,7,8-tetrahydroimidazo?1,2-a!pyridin-2-yl)-ben zimidazol-1-yl)-methyl!-biphenyl-2-carboxylic acid.

Abstract: A solid phase method for the synthesis of a plurality of differently substituted 2-methylenethiazoles with a wide variety of side-chain substituents as compounds of potential therapeutic interest. The 2-methylenethiazoles are prepared by acylation of a substrate-bound primary or secondary amine with cyanoacetic acid and reaction of the resulting cyanoacetamide with an isothiocyanate in the presence of a base. Alkylation with an appropriate alkyl halide under acidic conditions yields differently substituted, support-bound 2-methylene-2,3-dihydrothiazoles. These may be screened on the substrate or cleaved from the substrate and then screened in solution. The efficient synthesis of a wide variety of 2-methylenethiazoles using automated synthesis technology of the present method makes these compounds attractive candidates for the generation and rapid screening of diverse thiazole-based libraries.

Abstract: Compounds of the formula ##STR1## where m and n are integers 0 to 10 and m+n equals 0 to 10, (a) X is O or S(b) Z is a covalent bond; a monocyclic or polycyclic carbocycle ring moiety; or a monocyclic or polycyclic heterocyclic ring moiety containing one or more heteroatoms selected from O, S, or N;(c) Q is covalent bond; O; or S;(d) R is COOH, SO.sub.3 H, PO.sub.3 H.sub.2, or P(O)(OH)R.sup.4, wherein R.sup.4 is C.sub.1 -C.sub.8 alkyl;(e) R.sup.1, R.sup.2 and R.sup.5 are as defined in the claims.are useful in the treatment of calcium and phosphate elated disorders, such as arthritis and the like.

Abstract: Described herein are compounds of Formula (XX) and Formula (XXIV), shown below, and processes of making same. ##STR1## wherein p is 0 ##STR2## wherein p is 1, and Y is chlorine or bromine.

Abstract: Novel compounds are provided which are inhibitors of MTP and thus are useful for lowering serum lipids and treating atherosclerosis and related diseases, and have the structure ##STR1## including pharmaceutically acceptable salts thereof or prodrug esters thereof, wherein q is 0, 1 or 2;R.sup.x is H, alkyl, aryl or halogen;A is(1) a bond;(2) --O--; or(3) ##STR2## B is: ##STR3## and wherein L.sup.2, L.sup.1, R.sup.1, R.sup.2, R.sup.3, R.sup.3', R.sup.3a, R.sup.3b, R.sup.4, R.sup.4', R.sup.5, X, ##STR4## are as defined herein.

Abstract: The present invention provides a compound of formula (I) ##STR1## in which R.sub.1 represents a hydrogen atom or a (C.sub.1 -C.sub.4)alkyl group, R.sub.2 represents a hydrogen atom or a straight or branched (C.sub.1 -C.sub.4)alkyl group, R.sub.3 represents a straight or branched (C.sub.1 -C.sub.7)alkyl group, a group --(CH.sub.2).sub.n OCH.sub.3 (where n is 1, 2 or 3) or a group --CH.sub.2 O(C.sub.2 H.sub.4 O).sub.m CH.sub.3 (where m is 1, 2 or 3), R.sub.4 represents a hydrogen atom or a halogen atom, R.sub.5 represents a straight or branched (C.sub.1 -C.sub.4)alkyl group and A represents phenyl or heterocyclic group optionally substituted with one or more substituents independently chosen from halogen atoms and straight or branched (C.sub.1 -C.sub.4)alkyl, straight or branched (C.sub.1 -C.sub.4)alkoxy and trifluoromethyl groups, or a cyclo(C.sub.5 -C.sub.

Abstract: This invention relates to reactive derivatives of 2-(2-aminothiazol-4-yl)-2-methoxyimino acetic acid and 1H-tetrazol-1-acetic acid of the following general formula I, ##STR1## wherein R.sub.3 = ##STR2## as well as to use thereof in the manufacture of cephalosporin antibiotics such as cefotaxime, ceftriaxone and cefazolin.

Abstract: Amides having formula I: ##STR1## wherein E, X, R.sup.2 and R.sup.3 have the meanings given in the specification, and pharmaceutically acceptable salts and pharmaceutically acceptable in vivo hydrolysable esters thereof,which are useful in the treatment of urinary incontinence. Further provided are processes for preparing the aides and pharmaceutical compositions containing them.

Abstract: A method of synthesizing a compound having a 1,3-thiazolidin-4-one ring appended at the 2-position by a double bond to the active methylene position of a ketomethylene or malononitrile moiety, which comprises reacting the corresponding ketomethylene compound or malononitrile with an isothiocyanate in the presence of a base, reacting the resulting product with a haloacetic acid or haloacetic ester, followed by eliminating water or alcohol to form the 1,3-thiazolidin-4-one ring. A fragment necessary to complete a merocyanine, oxonol, hemicyanine, benzylidene, cinnamylidene or holopolar cyanine dye can be appended to the 1,3-thiazolidin-4-one ring to obtain the desired dye.

Abstract: A cyanoketone derivatives of the following formula (1) ##STR1## which are characterized by excellent herbicidal activity and effectiveness against a variety of broad leafed weeds, including barnyard grass, green foxtail, velvet leaf, livid amaranth and hairy beggar ticks.

Abstract: Heteroaromatic compounds of the formulae IA and IB ##STR1## where the dashed line is a double bond between the carbon atom and a Z atom, and the index and the substituents have the following meanings:R.sup.1alkyl, alkoxy, alkylaminoR.sup.2alkyl;Aa direct bond; alkylene, alkenylene, alkynylene; O, S, S-oxides, N and alkylene derivatives or oxime radicals thereofBhydrogen, halogen,alkyl, alkenyl, alkynyl; cycloalkyl, cycloalkenyl, cycloalkynyl, heterocyclyl, aryl, hetarylUCH.sub.2, CHCl, CHR.sup.2 or NOR.sup.2 ;Xhydrogen, cyano, nitro, halogen,alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, heterocyclyl, aryl, hetaryl; oxi- and thio derivatives thereof, carbonyl derivatives thereof, carbonyloxy derivatives thereof, amino derivatives thereof, oxime derivatives thereof,amino which may bear one or two of the abovementioned groups;m1 or 2,Yoxygen or sulfur;Z.sup.1 -Z.sup.2, Z.sub.3 -Z.sub.

Abstract: A retroviral protease inhibiting compound of the formula: ##STR1## is disclosed.

Abstract: The present invention provides a compound of the formula ##STR1## or a pharmaceutically acceptable salt thereof, which are useful in inhibiting protein farnesyltransferase and the farnesylation of the oncogene protein Ras or inhibiting de novo squalene production resulting in the inhibition of cholesterol biosynthesis, processes for the preparation of the compounds of the invention in addition to intermediates useful in these processes, a pharmaceutical composition, and to methods of using such compounds.

Abstract: Disclosed herein are cyanoketone derivatives of the following formula (1) ##STR1## such as 1-cyano-1-piperidinocarbonyl-3-[4-(2-chloro-4-trifluoromethylphenoxy)pheno xy]-2-butanone, 1-cyano-1-piperidinocarbonyl-3-[4-(3-chloro-5-trifluoromethyl-2-pyridyloxy )phenoxy]-2-butanone, 1-cyano-1-(N-methyl-N-dichlorophenyl)aminocarbonyl-3-[4-(2-quinoxalyloxy)p henoxy]-2-butanone, 1-cyano-1-(N,N-dibutyl)aminocarbonyl-3-[4-(3-chloro-5-trifluoromethyl-2-py ridyloxy)phenoxy-2-butanone, and the like, which are characterized by excellent herbicidal activity and effectiveness against a variety of gramineous weeds.

Abstract: A retroviral protease inhibiting compound of the formula: ##STR1## is disclosed wherein the terms R.sub.1, R.sub.2, R.sub.5, R.sub.6, Y, Y', m and n are herein defined.

Abstract: [Object]To provide a new 2,4-oxazolidinedione derivative possessing excellent hypoglycemic and hypolipidemic activities.[Constituent]A 2,4-oxazolidinedione derivative represented by the general formula: ##STR1## wherein X represents --CH.sub.2 --, --C(.dbd.O)--, --CH(OH)--, --C(.dbd.NOH)-- or --CH.dbd.CH--; R represents a hydrocarbon residue or heterocyclic group which may be substituted; n represents an integer from 0 to 5, and m represents an integer from 1 to 3; ....... represents a single or double bond; provided that n is an integer from 1 to 5 when X is --C(.dbd.O)--, or a pharmacologically acceptable salt thereof.

Abstract: This invention relates to compounds of Formula I and the stereoisomers and pharmaceutically acceptable salts thereof ##STR1## wherein R is alkyl, alkenyl, alkynyl, or (CH.sub.2).sub.m R.sup.3 where R.sup.3 is cycloalkyl and m is 1 or 2;R.sup.1 is alkyl;R.sup.2 is alkyl, aryl or aryl substituted with halogen or alkyl;R.sup.4 is alkyl;n is an integer from 1 to 5;p is an integer from 0 to 6;Y is NH, oxygen or sulfur; andZ is hydrogen, alkyl, alkoxy, NR.sup.6 R.sup.5 wherein R.sup.6 and R.sup.5 are independently hydrogen or alkyl, or SR.sup.7 wherein R.sup.7 is hydrogen, benzyl or alkyl.The compounds of Formula I are leukotriene B.sub.4 antagonists and are useful as anti-inflammatory agents and in the treatment of leukotriene B.sub.4 mediated conditions.

Abstract: Compounds having the structural formula ##STR1## wherein R is C.sub.1 -C.sub.6 alkoxy or C.sub.1 -C.sub.6 alkyl; R.sup.1 is fluorenyl, thienyl, pyridyl or thiazolyl, unsubstituted or substituted by one or more substituents selected from C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkylthio, halogen, C.sub.1 -C.sub.4 haloalkyl and nitro; and R.sup.2 is C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 cycloalkyl, C.sub.1 -C.sub.6 haloalkyl, C.sub.2 -C.sub.6 alkenyl, or C.sub.2 -C.sub.6 alkoxyalkyl. The compounds of this invention are effective for controlling mites and nematodes.

Abstract: .delta.-Amino-.gamma.-hydroxy-.omega.-aryl-alkanoic acid amides of formula I ##STR1## and the salts thereof, have renin-inhibiting properties and can be used as antihypertensive medicinal active ingredients.

Abstract: A retroviral protease inhibiting compound of the formula: ##STR1## is disclosed.

Abstract: The invention concerns a method for treating depression or senile dementia using a compound which acts selectively as an agonist of gamma aminobutyric acid (GABA) at GABA autoreceptors with the proviso that the compound is not fengabine and progabide.

Abstract: .beta.-Carboxy sulfonates of the formula ##STR1## wherein R.sub.1 is aryl, R.sub.3 and R.sub.4 are hydrogen or alkyl, Y is -O-, -S-, or -NR.sub.2 -, and R.sub.5 is alkyl or aryl are potent inhibitors of the enzyme acyl CoA:cholesterol acyltransferase (ACAT) and are thus useful for treating hypercholesterolemia and atherosclerosis.

Abstract: A compound of the formula ##STR1## wherein Ar is phenyl optionally substituted with at least one member of the group consisting of halogen, methylenedioxy, phenyl, phenoxy, --CF.sub.3 and alkyl, alkoxy and alkylthio of 1 to 6 carbon atoms, Z is selected from the group consisting of hydrogen, chlorine, --CF.sub.3 and alkyl, alkoxy and alkylthio of 1 to 6 carbon atoms, R.sub.1 and R.sub.2 are individually alkyl of 1 to 6 carbon atoms and the exocyclic double bonds independently have (E) or (Z) geometry having fungicidal activity and a process for their preparation.

Abstract: There are provided thienyl- and furylpyrrole compounds of formula I ##STR1## and their use for the control of insects and acarina. Further provided are compositions and methods comprising those compounds for the protection of plants from attack by insects and acarina.

Abstract: A retroviral protease inhibiting compound of the formula: ##STR1## is disclosed wherein R.sub.1, R.sub.2, R.sub.5, R.sub.6, Y.sub.m and Y'.sub.n are herein defined.

Abstract: Process for the preparation of compounds of the formula (I) ##STR1## in which R.sup.1, R.sup.2, R.sup.3, X and n have the meaning given in the description, by reacting acetates with carbon monoxide in the presence of a basic auxiliary, followed by alkylation. The products are intermediates for fungicidal acrylates.

Abstract: Bis-aryl amide and urea compounds of the general formula: ##STR1## wherein X is a divalent amide or urea substituent and Y is a nitrogen containing heterocycle, which compounds are inhibitors of platelet activating factor. Pharmaceutical compositions containing the compounds and methods of treating platelet activating factor associated conditions are also included.

Abstract: Fungicidal substituted acrylic esters of the formula ##STR1## in which R.sup.1 represents hydrogen, alkyl or alkenyl, or represents in each case optionally substituted aralkyl, aralkenyl, aryl or heteroaryl,R.sup.2 represents halogen, cyano, nitro, formyl, halogenoalkyl, alkoxyalkyl or alkylthioalkyl, or represents hydroximinoalkyl, alkoximinoalkyl, N-alkyliminoalkyl, N-aryliminoalkyl or N,N-dialkylhydrazonoalkyl, or represents alkoxy, alkylthio, halogenoalkoxy or halogenoalkylthio, or represents aryloxy or arylthio, or represents alkanoyl, alkoxycarbonyl, N,N-dialkylcarbamoyl or heterocyclylcarbonyl,R.sup.3 represents alkyl, or represents optionally substituted aralkyl,R.sup.4 represents dialkylamino or represents a radical --Z--R.sup.5,X represents oxygen or sulphur andY represents oxygen or sulphur or represents a radical ##STR2## where R.sup.5 represents alkyl or represents optionally substituted aralkyl,R.sup.

Abstract: Disclosed are compounds of Formula I useful in the treatment of cyclooxygenase mediated diseases such as pain, fever and inflammation of a variety of conditions including rheumatic fever, symptoms associated with influenza or other viral infections, common cold, low back and neck pain, dysmenorrhea, headache, toothache, sprains and strains, myositis, neuralgia, synovitis, arthritis, including rheumatoid arthritis degenerative joint diseases (osteoarthritis), gout and ankylosing spondylitis, bursitis, burns, injuries.

Abstract: Provided are certain aryl-substituted rhodanine derivatives, treatment methods and pharmaceutical formulations thereof.

Abstract: Bis-aryl amide and urea compounds of the general formula: ##STR1## wherein X is a divalent amide or urea substituent and Y is a nitrogen containing heterocycle, which compounds are inhibitors of platelet activating factor. Pharmaceutical compositions containing the compounds and methods of treating platelet activating factor associated conditions are also included.

Abstract: Compounds of formula I ##STR1## wherein X is oxygen or sulphur, W is CH or N, m is 0 or 1, and either a) n is 1 and Q is a non-aromatic heterocyclic ring of 3 to 10 ring atoms, containing one to three hetero atoms selected from oxygen, sulphur and nitrogen, which may be substituted and may be fused to another ring, with the proviso a) that if Q is thiazol-2-in-2-yl, it is substituted but not by methylene, and b) Q is not a six membered ring containing only two nitrogen atoms, or b) n is 0 or 1 and ##STR2## where R.sup.1 is alkyl, alkoxy or alkylthio, and R.sup.2 is heteroaryl, non aromatic heterocyclyl, optionally substituted cycloalkyl or optionally substituted alkyl containing at least 5 carbon atoms, phenyl substituted by one or more groups selected from halogen, optionally substituted alkyl, alkoxy, haloalkoxy, aryloxy, alkylthio and alkoxycarbonyl, and when R.sup.1 is alkyl or alkoxy, or, when W is nitrogen, R.sup.2 can also be unsubstituted phenyl, have pesticidal especially fungicidal activity.

Abstract: This invention is directed to compounds of formula (I) which are novel C3- or C5-acyl sulfonamide, carboxamic acid or tetrazolyl analogs of the Zaragozic acids. These compounds inhibit the enzyme squalene synthase and are useful as cholesterol lowering agents.

Abstract: 1,3-Oxazole and 1,3-thiazole compounds of formula I, and their pharmaceutically acceptable salts and prodrugs: ##STR1## wherein X represents oxygen or sulphur;R.sup.1 represents a non-aromatic azacyclic or azabicyclic ring system.

Abstract: 3,4-Diaryl-4,5-dihydro-1H-pyrazole compounds having a selected 5- or 6-membered aromatic heterocyclic moiety in the 4-position and an optionally substituted phenyl moiety in the 3-position, such as 4,5-dihydro-3-(4-fluorophenyl)-4-(5-trifluoromethyl-2-pyridinyl)-1H-pyrazo le were prepared as intermediates in the preparation of insecticidal 3,4,N-triaryl-4,5-dihydro-1H-pyrazole-1-carboxamide compounds. The 3,4-diaryl-4,5-dihydro-1H-pyrazole compounds can be prepared from appropriate 1,2-diarylethanone compounds by successive treatments with N,N,N',N'-tetramethyldiaminomethane in dichloromethane in the presence of acetic anhydride (to form a Mannich adduct) and hydrazine in the presence of a catalytic amount of trifluoroacetic acid.

Abstract: Water-soluble azlactone activated polyalkylene oxides having improved hydrolytic stability and conjugates of the azlactone activated polyalkylene oxides with biologically active nucleophiles are disclosed. Methods of forming and conjugating the activated polyalkylene oxides with biologically active nucleophiles are also disclosed.

Abstract: The invention concerns benzenesulphonamide derivatives of the formula I ##STR1## wherein R.sup.1 is (1-4C)alkyl, (3-4C)alkenyl or (3-4C)alkynyl;R.sup.2 and R.sup.3 together form --A.sup.2 --X.sup.2 --A.sup.3 -- which defines a ring having 5 or 6 ring atoms, wherein A.sup.2 and A.sup.3 each is (1-3C)alkylene and X.sup.2 is oxy, thio, sulphinyl or sulphonyl;A.sup.1 is a direct link to X.sup.1 or is (1-3C)alkylene;X.sup.1 is oxy, thio or imino;Ar is optionally substituted phenylene;R.sup.4 is (1-4C)alkyl, fluoro-(2-4C)alkyl or optionally substituted phenyl or a heterocyclic moiety;R.sup.5 is hydrogen or (1-4C)alkyl; andR.sup.6 is hydrogen, halogeno, trifluoromethyl, (1-4C)alkyl or (1-4C)alkoxy;or a pharmaceutically-acceptable salt thereof;processes for their manufacture; pharmaceutical compositions containing them and their use as 5-lipoxygenase inhibitors.

Abstract: Substituted phosphorothioate derivatives and pharmaceutical compositions thereof as potential antiradiation agents are disclosed.

Abstract: This invention relates to novel 3-substituted-2-oxindole derivatives which are inhibitors of prostaglandin H.sub.2 synthase, 5-lipoxygenase and interleukin-1 biosynthesis. The compounds of the invention are useful as inhibitors of prostaglandin H.sub.2 synthase and interleukin-1 biosynthesis, per se, and as analgesic, antiinflammatory and antiarthritic agents in the treatment of chronic inflammatory diseases This invention also relates to pharmaceutical compositions comprising said 3-substituted-2-oxindole derivatives; to methods of inhibiting prostaglandin H.sub.2 synthase and biosynthesis of interleukin-1; and to treating chronic inflammatory diseases in a mammal with said compounds. Further, this invention relates to certain novel carboxylic acids useful as intermediates in the preparation of the 3-substituted-2-oxindole derivatives of this invention and to a process for the preparation of the 3-substituted-2-oxindole derivatives.

Abstract: A photographic naphtholic coupler comprising a ballast free naphtholic coupler moiety containing a --CONH.sub.2 group in the 2- position and a ballasted coupling-off group in the 4- position enables good wash out of dye formed upon oxidative coupling from a photographic material during processing of such a photographic material. Such a naphtholic coupler is useful in photographic silver halide materials and processes.

Abstract: Amides having formula I: ##STR1## wherein E, X, R.sup.2 and R.sup.3 have the meanings given in the specification, and pharmaceutically acceptable salts and pharmaceutically acceptable in vivo hydrolysable esters thereof, which are useful in the treatment of urinary incontinence. Further provided are processes for preparing the amides and pharmaceutical compositions containing them.

Abstract: Novel heterocyclic compounds shown by the general formula ##STR1## or the pharmaceutically acceptable salts thereof useful as medicament in particular as antagonist of slow reacting substance of anaphylaxis (SRS-A).

Abstract: Fungicidal substituted acrylic esters of the formula ##STR1## in which R.sup.1 represents hydrogen, alkyl or alkenyl, or represents in each case optionally substituted aralkyl, aralkenyl, aryl or heteroaryl,R.sup.2 represents halogen, cyano, nitro, formyl, halogenoalkyl, alkoxyalkyl or alkylthioalkyl, or represents hydroximinoalkyl, alkoximinoalkyl, N-alkyliminoalkyl, N-aryliminoalkyl or N,N-dialkylhydrazonoalkyl, or represents alkoxy, alkylthio, halogenoalkoxy or halogenoalkylthio, or represents aryloxy or arylthio, or represents alkanoyl, alkoxycarbonyl, N,N-dialkylcarbamoyl or heterocyclylcarbonyl,R.sup.3 represents alkyl, or represents optionally substituted aralkyl,R.sup.4 represents dialkylamino or represents a radical --Z--R.sup.5,X represents oxygen or sulphur andY represents oxygen or sulphur or represents a radical ##STR2## where R.sup.5 represents alkyl or represents optionally substituted aralkyl,R.sup.