Abstract: Carrier compounds, compositions, and dosage unit forms therefor which are useful in the delivery of active agents are provided. The present invention provides a compound having the formula: ##STR1## or a salt thereof, wherein the compound may be used in a composition or dosage unit form for delivery of at least one active agent, including a peptide, mucopoly-saccharide, carbohydrate, of a lipid. Methods of administration and preparation of the compounds and compositions of the invention are provided as well, including oral administration. Further, the compositions of the invention may be prepared by mixing at least one active agent, at least one carrier compound, and, optionally, a dosing vehicle.

Abstract: Compounds of the formula ##STR1## in which R.sup.1 and R.sup.2 are as defined in the specification, and non-toxic metabolically labile ester and amides thereof are useful as modulators of metabotropic glutamate receptor function.

Abstract: The present invention relates to mixtures of .alpha.-amino acids and/or derivatives thereof and cyclopentane-.beta.-amino acids and/or derivatives thereof, dipeptides of the abovementioned .alpha.-amino acids and cyclopentane-.beta.-amino acids and mixtures of the abovementioned mixtures and dipeptides which have an improved tolerability in warm-blooded animals compared with the pure cyclopentane-.beta.-amino acids.

Abstract: Arylaminomethylenecamphor derivatives of the formula (1) ##STR1## where the C.dbd.C double bond is in the Z or E configuration, and the variables have the following meanings:R.sup.1 H, CH.sub.3,R.sup.2 H, C.sub.1 -C.sub.6 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, C.sub.2 -C.sub.6 -alkenyl, C.sub.3 -C.sub.8 -cycloalkenyl, aryl or substituted aryl,R.sup.3 H, C.sub.1 -C.sub.6 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, aryl, substituted aryl, C.sub.1 -C.sub.6 -alkoxy, C.sub.1 -C.sub.8 -acyl,Ar aryl, substituted aryl, hetaryl or substituted hetaryl,are used as sunscreen agents, especially in cosmetic and pharmaceutical formulations.

Abstract: Compounds of the formula ##STR1## in which X represents a bond, S, SO or SO.sub.2 ; and R is as defined in the specification are useful as modulators of metabotropic glutamate receptor function.

Abstract: A new type of yellow dyes with general formula Q-CO--CO--X is disclosed. They can be used in photographic materials as antihalation dyes, acutance dyes or filter dyes. Preferably they are incorporated in UV sensitive contact materials for pre-press applications.

Abstract: The process according to the invention for the preparation of enantiomerically pure cyclopentane-.beta.-amino acids of the general formula (I) ##STR1## in which A and D have the meanings given in the description, is characterized in that meso-dicarboxylic acid anhydrides are first converted by asymmetric alcoholysis with allyl alcohols and in the presence of a chiral amine base present in enantiomerically pure form, in inert solvents, via the intermediate enantiomerically pure salt stage, into the enantiomerically pure dicarboxylic acid monoesters, in a further step these dicarboxylic acid monoesters are intermediately converted, in the sense of a Curtius rearrangement by reaction with azides, into the corresponding acid azides, and are subsequently converted into the corresponding rearranged isocyanates and the isocyanates are then reacted with allyl alcohols to give the compounds of the general formula (VII), and finally the cyclopentane-.beta.

Abstract: A compound of the formula ##STR1## wherein R.sup.1 is hydrogen, lower alkyl, phenyl-lower alkyl, lower alkanoyl or benzoyl, and each phenyl in the phenyl-lower alkyl and the benzoyl is unsubstituted or substituted by halogen, lower alkyl or alkoxy; R.sup.2 represents a carboxyl or a carboxyl which is converted into an ester, an amide or a hydroxamic acid; R.sup.3 represent a lower alkyl; R.sup.4 represents a lower alkyl; A.sup.1 represents a lower alkylene which is unsubstituted or substituted by a phenyl and the phenyl is unsubstituted or substituted by halogen, lower alkyl or a lower alkoxy; A.sup.2 represents a lower alkylene; A.sup.3 represents a lower alkylene; and Z represents a sulfur or an oxygen. The compounds have inhibitory effects on LTA.sub.4 hydrolase and are useful for treating rheumatic diseases, psoriasis, inflammatory intestinal diseases, gout and cystic fibrosis.

Abstract: An aromatic compound of the formula (I): ##STR1## specifically, for example, 3-??(4-carboxyphenyl)methyl!valeramido!-4-dimethylaminobenzoic acid 4'-methylpiperazide, or a salt thereof, and a pharmaceutical composition comprising said aromatic compound or pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier or diluent which provides sufficiently effective alleviation of renal dysfunction without affecting blood pressure at a low blood concentration.

Abstract: This invention relates to nitrogen-containing aromatic 5-membered ring-condensed benzazepine derivatives represented by the general formula (I) ##STR1## (symbols in the formula have the following meanings; ring B: a nitrogen-containing aromatic 5-membered ring having at least 1 nitrogen atom and optionally one oxygen or sulfur atom, which may optionally have substituent(s), R.sup.1 and R.sup.2 : these may be the same or different from each other and each represents a hydrogen atom, a halogen atom, a lower alkyl group, an amino group which may optionally be substituted by lower alkyl group(s), or a lower alkoxy group,A: a single bond; a group represented by the formula --NHCO--(CR.sup.3 R.sup.4).sub.n --,n: 0 or an integer of from 1 to 3,R.sup.3 and R.sup.4 : these may be the same or different from each other and each represents a hydrogen atom, a lower alkyl group (provided that R.sup.3 and R.sup.

Abstract: Carrier compounds and compositions therewith which are useful in the delivery of active agents are provided. Methods of administration and preparation are provided as well.

Abstract: Aniline derivatives useful as antihyperglycemic agents, pharmaceutical compositions comprising the aniline derivatives and methods for their use are described. The aniline derivatives are useful for the treatment of insulin-dependent diabetes mellitus (IDDM or Type I) and non-insulin dependent diabetes mellitus (NIDDM or Type II).

Abstract: Diphenylheteroalkyl derivatives of the formula I ##STR1## where A and R.sup.1 -R.sup.6 have the meanings specified in the description, and the preparation thereof are described.The substances are suitable for controlling diseases and as cosmetic agents.

Abstract: Novel compounds ##STR1## wherein R.sup.1 to R.sup.13 are independently selected from C.sub.2 -C.sub.4 linear and branched alkyls, H, NH.sub.2, CH.sub.3, OR.sup.14, fluorine, chlorine, iodine, NO.sub.2, CF.sub.3, NHCOCH.sub.3, NHCOOtBu, NHR.sup.15, NR.sup.16 R.sup.17 and phenyl, for use as immunosuppressive agents to prevent or significantly reduce graft rejection in organ and bone marrow transplantation are described. The novel compounds can also be used as an immunosuppressant drug for T-lymphocyte mediated autoimmune diseases, such as diabetes, and may be useful in alleviating psoriasis and contact dermatitis. Additionally, the novel compounds can be used for antiproliferation and gene therapy.

Abstract: A benzene derivative of the formula (I): ##STR1## wherein R.sup.1 is hydrogen, C.sub.1-6 -alkyl, C.sub.1-6 -haloalkyl, --NH.sub.2, --NHR.sup.21 ; R.sup.2 is hydroxyl, --OR.sup.22, three- to seven-membered saturated cycloaliphatic amino optionally interrupted by one or more nitrogen, oxygen or sulfur atoms, --NHR.sup.23, --N(R.sup.24).sub.2, --NH.sub.2 ; R.sup.4 is hydrogen, C.sub.1-6 -alkyl, or --C(.dbd.O)R.sup.25 ; R.sup.7 is --CO--, --SO.sub.2 --; R.sup.8 is --CO--, single bond; R.sup.12 is --R.sup.11 --R.sup.5 ; R.sup.11 is --N(R.sup.5)--, --NH--, --O--, --N(R.sup.26)--, --N(C(.dbd.O)R.sup.27)--, --N(C(.dbd.O)NH.sub.2)--, --N(C(.dbd.O)NHR.sup.28)--; R.sup.13 is hydrogen, C.sub.1-6 -alkyl, C.sub.1-6 -haloalkyl, --NHC(.dbd.O)(CH.sub.2).sub.m C.sub.6 H.sub.5, --NHC(.dbd.O)R.sup.29, --NHC(.dbd.O)CH(C.sub.6 H.sub.5).sub.2, --NH.sub.2, --NHR.sup.30, --(CH.sub.2).sub.n C.sub.6 H.sub.5 ; Z is C, CH, N; A is CH, N; R.sup.5 is hydrogen, --CH.sub.2 C.sub.6 H.sub.4 COOH, --CH.sub.2 C.sub.6 H.sub.4 COOR.sup.31, --CH.

Abstract: The present invention is concerned with compounds of formula (I) ##STR1## wherein Ar is a mono- or bicyclic aromatic group optionally containing one or two heteroatoms independently selected from nitrogen, oxygen and sulphur, said group being optionally substituted by one or more atoms or groups independently selected from halogen, nitro, amino, --NRR.sup.1 where R and R.sup.1 are independently selected from hydrogen, C.sub.1-8 alkyl and C.sub.1-8 alkanoyl, cyano, carboxyalkoxy, alkoxycarbonylalkoxy, C.sub.1-8 alkyl (including cycloalkyl and cycloalkylalkyl), C.sub.1-8 alkoxy (including cycloalkoxy and cycloalkylalkoxy), C.sub.

Abstract: Abstract of the Disclosure: Diphenylheteroalkyl derivatives of the formula I ##STR1## where A and R.sup.1 -R.sup.6 have the meanings specified in the description, and the preparation thereof are described.The substances are suitable for controlling diseases and as cosmetic agents.

Abstract: Modified amino acid compounds useful in the delivery of active agents are provided. Methods of administration and preparation are provided as well.

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: A method of combating pests which comprises applying to such pests or to a pest habitat a pesticidally effective amount of a substituted 2-cyclohexen-1-yl-amine derivative of the formula ##STR1## and addition products thereof with acids and metal salts. Most of the compounds are new.

Abstract: The present invention relates to a compound of formula I ##STR1## or a nontoxic pharmaceutically acceptable salt, physiologically hydrolyzable ester or solvate thereof, in whichX is --O--CO--, --NH--CO--, --CS--NH--, --CO--O--, --CO--NH--, --COS--, --SCO--, --SCH.sub.2 --, --CH.sub.2 --CH.sub.2 --, --C.tbd.C--, --CH.sub.2 --NH--, --COCH.sub.2 --, --NHCS--, --CH.sub.2 S--, --CH.sub.2 O--, --OCH.sub.2 --, --NHCH.sub.2 -- or --CR.sup.5 .dbd.CR.sup.6 --;R.sup.m and R.sup.k are independently hydrogen, halogen, C.sub.1-6 alkyl, hydroxy, C.sub.1-6 alkyloxy or nitro;n is zero or one;R.sup.4 is --(CH.sub.2).sub.t --Y, C.sub.1-6 alkyl, or C.sub.3-6 cycloalkyl;R.sup.1 is --CO.sub.2 Z, C.sub.1-6 alkyl, CH.sub.2 OH, --CONHR.sup.y, or CHO;R.sup.2 and R.sup.3 are independently hydrogen or C.sub.1-6 alkyl;R.sup.a and R.sup.b are independently hydrogen or C.sub.1-6 alkyl; but when n is one, R.sup.a and R.sup.

Abstract: Disclosed are (1) a method for preparing an aromatic secondary amino compound which comprises reacting an N-cyclohexylideneamino compound in the presence of a hydrogen moving catalyst and a hydrogen acceptor by the use of a sulfur-free polar solvent and/or a cocatalyst, and(2) a method for preparing an aromatic secondary amino compound which comprises reacting cyclohexanone or a nucleus-substituted cyclohexanone, an amine and a nitro compound corresponding to the amine in a sulfur-free polar solvent in the presence of a hydrogen moving catalyst, a cocatalyst being added or not added. In a further aspect, a method is provided for the preparation of aminodiphenylamine by reacting phenylenediamine and cyclohexanone in the presence of a hydrogen transfer catalyst in a sulfur-free polar solvent while using nitroaniline as a hydrogen acceptor.

Abstract: The present invention relates to a process for the preparation of 2,5-di-phenylamino-terephthalic acid and its dialkyl esters of the formula ##STR1## in which R is a hydrogen atom or a methyl or an ethyl group, by reaction of a succinic acid dialkyl ester with a sodium alcoholate in xylene, treatment of the resulting 2,5-dihydroxy-cyclohexadiene-1,4-di-carboxylic acid dialkyl ester with acid and aniline, dehydrogenation of the resulting 2,5-di-phenylamino-dihydro-(3,6)-terephthalic acid dialkyl ester by means of oxygen, if appropriate hydrolysis of the 2,5-di-phenylamino-terephthalic acid dialkyl ester formed and liberation of the 2,5-di-phenylamino-terephthalic acid from the di-sodium salt formed. The 2,5-di-phenylamino-dihydro-(3,6)-terephthalic acid dialkyl ester is reacted with pure oxygen in the presence of an alkali metal ion and/or an alkaline earth metal ion. This significantly decreases undesirable impurities.

Abstract: A fused benzeneoxyacetic acid derivative of the formula (I): ##STR1## A is --COW, --NR.sup.4 --Y or --Z--NR.sup.4 --CONR.sup.2 R.sup.3 ; and salts thereof possess an agonistic on PGI.sub.2 receptor, so it is useful for prevention and/or treatment of thrombosis, arteriosclerosis, ischemic heart diseases, gastric ulcer and hypertention.

Abstract: Certain compounds have been synthesized and found to be effective inhibitors of phospholipase A.sub.2 (PLA.sub.2), and thereby useful in the treatment of intestinal cholesterol absorption and the disease states arising therefrom, such as hypercholesterolemia and coronary artery disease.

Abstract: The present invention provides novel ring-substituted 2-amino-1,2,3,4-tetrahydronaphthalenes and 3-aminochromanes which exhibit binding activity at the serotonin 1A receptor.

Abstract: Compounds of Formula 1 bind to the opioid receptors: ##STR1## wherein R.sub.1 is a group of the formula ##STR2## where W is --(CH.sub.2).sub.a -- (where a is 0, 1, or 2), --O--, --NH--, --S--, --SO--, or --SO.sub.2 --, and Ar is phenyl, phenyl-alkyl, phenyl substituted with 1-3 halo, nitro, lower alkyl, hydroxy, amino, alkylamino, dialkylamino, and/or hydroxy-lower alkyl groups, and n is 0, 1, 2, 3, or 4;R.sub.2 and R.sub.3 are each independently H, lower alkyl, or ##STR3## where X is H, OH, lower alkyl, or lower alkoxy, and p is 0, 1, 2, or 3; R.sub.4 is ##STR4## where m is 0, 1, 2, or 3, and R is 1-3 halo, nitro, lower alkyl, hydroxy, amino, alkylamino, dialkylamino, and/or hydroxy-lower alkyl groups;R.sub.5 is cycloalkyl, bicycloalkyl, or tricycloalkyl; andR.sub.6, R.sub.7, R.sub.8, and R.sub.9 are each independently H or lower alkyl.

Abstract: Triarylamino-based dinitrile and dicarboxylic acid monomers as represented by the formula: ##STR1## wherein Z is --CN or --COOH and R is selected from the group consisting of --H, --CH.sub.3, --N(CH.sub.3).sub.2 and --OH.

Abstract: The invention provides N-acyl-N-phenylmaleamic acid derivatives represented by the general formula I!, a method of producing the same, and a herbicide containing the same as the effective components, ##STR1## wherein X and Y each individually represent hydrogen atoms or halogen atoms, R.sup.1 represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a lower alkoxyalkyl group or a lower alkoxycarbonylalkyl group, R.sup.2 represents a lower alkyl group, a halogenated lower alkyl group or a substituted or unsubstituted phenyl group, R.sup.3 represents a hydrogen atom or a lower alkyl group, and R.sup.4 represents a hydroxyl, a lower alkoxy group, a lower alkenyloxy group, a lower alkynyloxy group, a lower alkoxyalkoxy group, a benzyloxy group or a lower alkoxycarbonylalkoxy group. This herbicide which is very useful can be widely applied to upland, paddy field, orchard, turf, forest, non-crop land, etc., and is not harmful to crops.

Abstract: Compounds of the formula ##STR1## having retinoid like biological activity.

Abstract: This invention relates to novel 4-(3,4-dioxocyclobuten-1-yl)chromenes and dihydronaphthalenones and 3-(3,4-dioxocyclobuten-1-yl)indenes and salts thereof having smooth muscle relaxing activity, to their use in the treatment of hypertension as well as for treatment of peripheral vascular disease, congestive heart failure, disorders involving excessive smooth muscle contraction of the urinary tract such as incontinence or of the gastrointestinal tract such as irritable bowel syndrome, asthma, and hair loss and to pharmaceutical compositions containing an invention compound. The present invention discloses compounds represented by the formula (I): ##STR1## wherein: R.sub.1 and R.sub.2, independent from each other, are selected from the following: C.sub.1-6 perfluoroalkoxy, C.sub.1-6 perfluoroalkyl, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, hydroxyl, C.sub.1-6 alkoxycarbonyl, nitro, cyano, halogen, C.sub.1-6 alkylsulfonamido, C.sub.1-6 perfluoroalkylsulfonamido, amino, C.sub.1-6 acylamino, C.sub.

Abstract: R.sub.3, R.sub.4 and R.sub.5, each represents a hydrogen or halogen atom (at least one of R.sub.3, R.sub.4 and R.sub.5 being other than hydrogen or halogen); optionally substituted amino; optionally halogenated or hydroxylated alkyl, alkoxy, alkylalkoxy or alkylthio; or R.sub.3 and R.sub.4 (in the 3- and 4-positions) can together form a single divalent radical with 3 or 4 members containing 1 or 2 non-adjacent oxygen atoms; are useful as agricultural fungicides.

Abstract: The compounds of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are, independently, hydrogen, straight or branched chain alkyl or mono- or bi-cyclic alkyl;A is a substituted phenyl group containing one or two substituents selected from cyano, nitro, alkyl, perfluoroalkyl, alkoxy, perfluoroalkoxy, amino, alkylamino, dialkylamino, sulfamyl, alkylsulfonamido, arylsulfonamido, alkylcarboxamido, arylcarboxamido, alkylsulfone, perfluoroalkylsulfone, arylsulfone, chloro, bromo, fluoro, iodo, 1-imidazolyl or carboxyl; or a pharmaceutically acceptable salt thereof, are smooth muscle relaxants.

Abstract: Compound of formula (I): ##STR1## in which: R.sub.1 represents halogen, or hydroxy, alkyl, alkoxy, cyano, amino, mercapto, alkylthio or phenoxy,R.sub.2 and R'.sub.2 represent two hydrogen when the ring is unsaturated, or alternatively identical or different, represent hydrogen or halogen, or hydroxy, alkyl, alkoxy, cyano, amino or oxo when the ring is saturated,R.sub.3 represents any one of the following groups: ##STR2## in which: m represents 1, 2 or 3,X represents oxygen or sulfur or N-R, R.sub.5 or R.sub.6, which are identical or different, represent hydrogen or alkyl or trifluoromethyl or form (C.sub.3 -C.sub.6) cycloalkyl,n represents 0, 1 or 2,R.sub.7 represents hydroxy, alkoxy, amino, or --O--CH.sub.2 --CO--NRR',R.sub.4 represents hydrogen or halogen or alkyl, alkoxy or trihaloalkyl.

Abstract: A process is reported for the preparation of bis(amidocarboxylic acid) involving reacting an ester with an aminocarboxylate compound, the latter being formed from lactams or aminocarboxylic acids and salts thereof. The ester and aminocarboxylate compound are present in a weight ratio of about 1:1 to about 1:4, and reaction is conducted in a mono- or polyhydric alcohol solvent.

Abstract: Di(aromatic) compounds corresponding to the following formula: ##STR1## in which: Ar represents either ##STR2## n=1 or 2 or: ##STR3## X represents a divalent radical, Z represents O, S or a divalent radical,and R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 represent a hydrogen atom or various organic radicals, and the salts of the compounds of formula (I) when R.sub.1 is a carboxylic acid function.Use in human and veterinary medicine and in cosmetics.

Abstract: Carboxylic acid derivatives of the formula: ##STR1## are provided, which are useful for treatment of androgen dependent diseases.

Abstract: Process for the preparation of 2,5-di(phenylamino)terephthalic acid and dialkyl esters thereof in high purity.The invention relates to a process for the preparation of dialkyl 2,5-di(phenylamino)terephthalates of the formula (I) ##STR1## in which R is a hydrogen atom or a methyl group and R' is a methyl group or ethyl group, by dehydrogenation (oxidation) of the corresponding dialkyl 2,5-di(phenylamino)-3,6-dihydroterephthalate with oxygen, which comprises blanketing with oxygen a solution or suspension of the dialkyl 2,5-di(phenylamino)-3,6-dihydroterephthalate in aromatic hydrocarbons in a stirred vessel, circulating this reaction mixture via a spraying device, so that the sprayed reaction mixture is distributed over the reaction mixture present in the stirred vessel, the sprayed reaction mixture being mixed with the circulating gas.The process has the advantage of a short reaction time, combined with favorable space-time yields and simplicity in terms of apparatus.

Abstract: An ecologically and economically improved process for the preparation of 2,5-di-phenylamino-terephthalic acid and its di-alkyl esters of the formula (1) ##STR1## in which R is a hydrogen atom or a methyl group and R' is a hydrogen atom or a methyl or ethyl group.

Abstract: A fused benzenoxyacetic acid derivative of the formula (I): ##STR1## and salts thereof possess an agonistic on PGI.sub.2 receptor, so it is useful for prevention and/or treatment of thrombosis, arteriosclerosis, ischemic heart diseases, gastric ulcer and hypertention.

Abstract: The invention provides dental cement compositions and methods of using them for binding hard tooth material, metal and ceramic. The cement compositions include polymerizable acid reactive ethylenically unsaturated monomers, and a source of cations reactive therewith, to further crosslink the resulting polymer. The cements have superior adhesion to tooth without separately acid etching dentin or enamel. Compositions of are useful as dental luting cements, liners, bases and restoratives.

Abstract: Compounds of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, n, m, o, p and q are as hereinafter set forth, and, when R.sub.2 is hydrogen, pharmaceutically acceptable salts thereof with bases, are described. The compounds of formula 1 are potent inhibitors of phospholipases A.sub.2 (PLA.sub.2 's) and are therefore useful in the treatment of inflammatory diseases, such as psosiasis, inflammatory bowel disease, asthma, allergy, arthritis, dermatitis, gout, pulmonary disease, myocardial ischemia/reperfusion, and trauma induced inflammation, such as spinal cord injury.

Abstract: This invention relates to a method for retarding plant growth by applying to the plant an effective amount of a malonic acid derivative compound. This invention also relates to novel malonic acid derivative compounds and processes for the preparation thereof.

Abstract: Styrene derivatives of the formula ##STR1## and an electrophotographic photoconductor comprising an electroconductive support material and a photosensitive layer comprising at least one styrene derivatives of the same formula are disclosed, in which Ar represents an unsubstituted of substituted phenyl group or an unsubstituted or substituted styryl group, R represents hydrogen, a lower alkyl group or an unsubstituted or substituted phenyl group, and A is selected from the group consisting of ##STR2## wherein R.sup.1 represents a lower alkyl group or a lower alkoxy group, R.sup.2 and R.sup.3 each represent a lower alkyl group, an aralkyl group, or an unsubstituted or substituted phenyl group.

Abstract: An improved process for preparing mono-condensation derivatives of adipic acid with fewer steps and better purity is disclosed. In particular, this process comprises: (a) forming relatively concentrated and pure cyclic monomeric adipic anhydride by depolymerization and concentration starting from polymeric adipic anhydride; and (b) adding a condensation reactant having an active hydrogen, e.g., a primary or secondary amine, to said cyclic monomeric adipic anhydride to form the corresponding mono-condensation derivative of adipic acid.

Abstract: The synthesis of enamines in aqueous media and a process for the preparation of memory enhancing 9-amino-1,2,3,4-tetrahydracridines are described.

Abstract: Benzocyclobutene-1,2-dichlorides, -bromides and -iodides which are substituted in the benzene ring are accessible in good yields and short reaction times by reacting substituted 1,2-(dichloromethyl or dibromomethyl)-benzenes with NaI in acetonitrile as the solvent. They can be used together with dienophils, for example 1,4-quinones, in Diels-Alder reactions.

Abstract: This invention relates to a synthesis method favorable for the industrial production of a benzoic acid derivative having a retinoid activity of the general formula: ##STR1## wherein the derivative can be obtained by a simple procedure in safety with high yield.Specifically, this invention relates to a synthesis method characterized in that only one vessel is needed for several reactions in the different steps of subjecting acetanilide as a starting material, which is readily available and safe to handle, to Friedel-Crafts reaction with 2,5-dimethyl-2,5-dichlorohexane; subjecting the thus obtained compound to acyl exchange reaction with monomethyl ester terephthalic chloride, followed by hydrolysis; and recrystallizing from a mixture of methanol and water.Moreover, the crystals in novel form obtained by the synthesis method of this invention are suitable for formulation, because the amount of solvents remaining therein after recrystallization is small and the grain size thereof is uniform.

Abstract: A process for the preparation of 2,5-di(phenylamino)terephthalic acid and its dialkyl esters of formula (I): ##STR1## in which R is a hydrogen atom or a methyl group and R' is a hydrogen atom or a methyl or ethyl group.

Abstract: A process for the preparation of a polycyclic dye of the Formula (1): ##STR1## by reacting a substituted acetic acid of the Formula (2): ##STR2## with a compound of the Formula (3): ##STR3## and oxidation of the intermediate leuco compound to dehydrogenate the peripheral heterocyclic rings whereinY is an optionally substituted aromatic or heteroaromatic radical;Ring A is unsubstituted or is substituted by from one to five groups;Z is --NR.sup.1 R.sup.2 ;R.sup.1 and R.sup.2 are each independently H or are independently selected from optionally substituted alkyl, alkenyl, cycloalkyl, aralkyl, aryl and heteroaryl; orR.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached form a heterocyclic ring; orR.sup.1 and R.sup.2 each independently together with the nitrogen to which they are attached and the adjacent carbon atom of Ring B form a heterocyclic ring; andX.sup.1 and X.sup.