Abstract: The present invention is directed to a compound represented by the following formula (I), ##STR1## and a linker for peptide synthesis using the above compound. When the linker of the present invention is used for the solid-phase peptide synthesis, it is possible to synthesize those peptides which are sensitive to acid and difficult to synthesize by conventional methods. Also, side reactions can be prevented, and the desired product is produced at a high purity because cleavage can be achieved under milder conditions or in shorter times. In other words, efficient peptide synthesis is possible.

Abstract: A polyimide comprising a requisite structural unit having one or more recurring structural units of the formula: ##STR1## such as the structural units of the formula ##STR2## Further, the present invention relates to a novel aromatic diamine which has a perfluoro radical and can be used as a raw material monomer of the polyimide, and a process for preparing the same.The polyimide can have an extremely low dielectric constant and is colorless, transparent and excellent in processability and heat resistance.

Abstract: An electrophotographic photoconductor is composed of an electroconductive substrate and a photoconductive layer formed thereon, the photoconductive layer includes a dipyrenylamine derivative of formula (I): ##STR1## wherein R represents an alkyl group with 1 to 12 carbon atoms, which may have a substituent, or an aryl group which may have a substituent. Novel dipyrenylamine derivatives of formula (I), in which R is -ph-(R.sup.4)n, wherein, ph is a phenyl group, R.sup.4 is hydrogen, an unsubstituted or substituted alkyl group having 1 to 12 carbon atoms, an unsubstituted or substituted alkoxyl group having 1 to 12 carbon atoms, n is an integer of 1 to 5, and when n is 2 to 5, R.sup.4 may be the same or different, which are for use in the photoconductive layer of the electrophotographic photoconductor, are synthesized.

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

Abstract: An electrophotographic photoconductor comprising an electroconductive support, and a photoconductive layer formed thereon comprising at least one tertiary amine compound having a condensed polycyclic hydrocarbon group of formula (I): ##STR1## wherein A.sup.1 and A.sup.2 each independently represent an unsubstituted or substituted alkyl group or aryl group, and Ar represents an unsubstituted or substituted condensed polycyclic hydrocarbon group. Furthermore, novel tertiary amine compounds having a condensed polycyclic hydrocarbon group are disclosed.

Abstract: A pyrenylamine derivative having an unsaturated bond of formula (I), which can be employed as an organic photoconductive material for use in electrophotography: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, W, l, m, n j and k are specifically defined the specification, an aldehyde compound of formula (II), which is an intermediate for preparing the pyrenylamine derivative: ##STR2## and methods of producing the pyrenylamine derivative and the aldehyde compound are disclosed.

Abstract: Polyamines endowed with chain extension activity for formulations such as polyureas and polyurethanes are disclosed, which have the general formula: ##STR1## wherein n is 0-1000; R.sub.1 =R.sub.2, and R.sub.1 and R.sub.2 are from the group --CH.sub.2 --CH.sub.2 --; --CH.sub.2 --C(CH.sub.3)H--; and --C(CH.sub.3)H--CH.sub.2 --; and R.sub.3 and R.sub.4 are each independently selected from the group consisting of H, --CH.sub.3, --CH.sub.2 CH.sub.3, --CH.sub.2 OH, and --CH.sub.2 --CH.sub.2 --OH.

Abstract: The present invention relates to a process for the preparation of benzothioxanthene dyestuffs and cyclisation of 3-(2'-aminophenylthio)-benzanathrones wherein the diazotisation and cyclisation are carried out simultaneously in polar, aprotic solvent in the presence of water.

Abstract: [2,2]paracyclophane compounds having formula (I): ##STR1## wherein R.sup.1 and R.sup.2 independently represent an alkyl group having 1 to 4 carbon atoms, which may have a substituent, or an aryl group which may have a substituent, provided that R.sup.1 and R.sup.2 may not be a methyl group at the same time, and methods of producing the same are disclosed. These compounds are useful as an effective photoconductive component for an electrophotographic photoconductor which is composed of an electroconductive support and a photoconductive layer formed thereon.

Abstract: Tetrahydronaphthaleneamine derivatives having the formula ##STR1## wherein R, R', R.sub.1 and R.sub.2 are as defined herein, are novel calcium channel blockers.

Abstract: Compounds of formula I ##STR1## are useful as herbicides, effective against dicotyledonous weeds.

Abstract: This invention relates to novel derivatives of tetralin, to the processes for their preparation, to their use as aminopeptidase inhibitors and to their end-use application as immunomodulators and as analgesic agents.

Abstract: A hydroxy arylamine compound is disclosed represented by the formula: ##STR1## wherein: m is 0 or 1,Z is selected from the group consisting of: ##STR2## n is 0 or 1, Ar is selected from the group consisting of: ##STR3## R is selected from the group consisting of --CH.sub.3, --CH.sub.2 H.sub.5, --C.sub.3 H.sub.7, and --C.sub.4 H.sub.9,Ar' is selected from the group consisting of: ##STR4## X is selected from the group consisting of: ##STR5## s is 0, 1 or 2, the dihydroxy arylamine compound being free of any direct conjugation between the --OH groups and the nearest nitrogen atom through one or more aromatic rings. The dihydroxy arylamine compound may be employed in an electrophotographic imaging member and the member may be used in an electrophotographic imaging process.

Abstract: ar-(Hydrocarbylthio)aromatic amines, such as (alkylthio) anilines, are prepared by heating one or more other ar-(hydrocarbylthio)aromatic amines in the presence of a catalyst, such as aluminum chloride, to redistribute the hydrocarbylthio groups with little or no co-formation of secondary or tertiary amines. The amine starting material is one or more primary aromatic amines having at least one free ring position and at least one hydrocarbylthio substituent in a ring position other than a meta-position.

Abstract: The present invention relates to compounds of formula (I)ArCH.sub.2 R.sup.1 (I)or a monomethyl or a monoethyl ether thereof (the compound of formula (I) including these ethers may contain no more than 30 carbon atoms in total); ethers, esters thereof; acid addition salts thereof; wherein Ar is a chrysene or substituted chrysene ring system; R.sup.1 contains not more than eight carbon atoms and is a group ##STR1## wherein m is 0 or 1;R.sup.5 is hydrogen;R.sup.6 and R.sup.7 are the same or different and each is hydrogen or C.sub.1-3 alkyl optionally substituted by hydroxy;R.sup.8 and R.sup.9 are the same or different and each is hydrogen or C.sub.1-3 alkyl; ##STR2## is a five- or six-membered saturated carbocyclic ring; R.sup.10 is hydrogen, methyl or hydroxymethyl;R.sup.11, R.sup.12 and R.sup.13 are the same or different and each is hydrogen or methyl;R.sup.14 is hydrogen, methyl, hydroxy, or hydroxymethyl.

Abstract: The present invention relates to compounds of formula (I)ArCH.sub.2 R.sup.1 (I)or a monomethyl or a monoethyl ether thereof (the compound of formula (I) including these ethers may contain no more than 30 carbon atoms in total); ethers, esters thereof; acid addition salts thereof; wherein Ar is a chrysene or substituted chrysene ring system; R.sup.1 contains not more than eight carbon atoms and is a group ##STR1## wherein m is 0 or 1; R.sup.5 is hydrogen;R.sup.6 and R.sup.7 are the same or different and each is hydrogen or C.sub.1-3 alkyl optionally substituted by hydroxy;R.sup.8 and R.sup.9 are the same or different and each is hydrogen or C.sub.1-3 alkyl;--C--C-- is a five- or six-membered saturated carbocyclic ring;R.sup.10 is hydrogen, methyl or hydroxymethyl;R.sup.11, R.sup.12 and R.sup.13 are the same or different and each is hydrogen or methyl;R.sup.14 is hydrogen, methyl, hydroxy, or hydroxymethyl.

Abstract: Cyclic polyamide oligomers are prepared by the reaction of various spirobiindane diamines, including spirobiindane bisphenol bis-aminophenoxy ethers, with dicarboxylic acid chloride such as isophthaloyl chloride. The oligomer compositions may be converted to copolyamides by reaction with lactams in the presence of basic reagents.

Abstract: The present invention relates to compounds of formula (I)ArCH.sub.2 R.sup.1 (I)or a monomethyl or a monoethyl ether thereof (the compound of formula (I) including these ethers may contain no more than 30 carbon atoms in total); ethers, esters thereof; acid addition salts thereof; wherein Ar is an anthracene or substituted anthracene ring system; R.sup.1 contains not more than eight carbon atoms and is a group ##STR1## wherein m is 0 or 1;R.sup.5 is hydrogen;R.sup.6 and R.sup.7 are the same or different and each is hydrogen or C.sub.1-3 alkyl optionally substituted by hydroxy;R.sup.8 and R.sup.9 are the same or different and each is hydrogen or C.sub.1-3 alkyl; ##STR2## is a five- or six-membered saturated carbocyclic ring; R.sup.10 is hydrogen, methyl or hydroxymethyl;R.sup.11, R.sup.12 and R.sup.13 are the same or different and each is hydrogen or methyl;R.sup.14 is hydrogen, methyl, hydroxy, or hydroxymethyl.

Abstract: The present invention relates to compounds of formula (I)ArCH.sub.2 R.sup.1 (I)or a monomethyl or a monoethyl ether thereof (the compound of formula (I) including these ethers may contain no more than 30 carbon atoms in total); ethers, esters thereof; acid addition salts thereof; wherein Ar is a fluoranthene or substituted fluoranthene ring system; R.sup.1 contains not more than eight carbon carbon atoms and is a group ##STR1## wherein m is 0 or 1;R.sup.5 is hydrogen;R.sup.6 and R.sup.7 are the same or different and each is hydrogen or C.sub.1-3 alkyl optionally substituted by hydroxy;R.sup.8 and R.sup.9 are the same or different and each is hydrogen or C.sub.1-3 alkyl;--C--C-- is a five- or six-membered saturated carbocyclic ring;R.sup.10 is hydrogen, methyl or hydroxymethyl;R.sup.11, R.sup.12 and R.sup.13 are the same or different and each is hydrogen or methyl;R.sup.14 is hydrogen, methyl, hydroxy, or hydroxymethyl.

Abstract: Certain phenalenone and benzphenalenone fluorescent compounds are useful in biomedical studies and analytical determinations. These compounds are particularly useful in assays for living organisms, e.g. microorganisms, carried out at a pH of 9 or less. For these determinations, the compounds can be attached to reducible compounds which will subsequently release the fluorescent moiety upon reduction. In the presence of an electron transfer agent, the reducible compounds are easily reduced by a microorganism.

Abstract: The present invention relates to novel biologically active tricyclic compounds, of the general formula I: ##STR1## and salts thereof, in which R.sub.1 represents hydrogen, alkyl of 1-6 carbon atoms, an optionally substituted aralkyl group or an acyl group,R.sub.2 represents hydrogen, alkyl (1-6 C), or an optionally substituted aralkyl group, orR.sub.1 +R.sub.2 together with the nitrogen atom represent a heterocyclic 5- or 6-membered ring, p1 X and Y each represent hydrogen, hydroxy, halogen, alkyl or alkoxy of 1-6 carbon atoms, nitro, CF.sub.3 or an acyloxy group, andthe dotted line signifies an optional extra bond.The compounds of the general formula I have valuable anti-depressant activity without a sustained influence on appetite.

Abstract: The present invention relates to compounds of formula (I)ArCH.sub.2 R.sup.1 (I)or a monomethyl or monoethyl ether thereof (the compound of formula (I) including these ethers may contain no more than 30 carbon atoms in total); ethers, esters, thereof; acid addition salts thereof; wherein Ar is a C.sub.15-18 fused tetracarbocyclic ring system containing 3 or 4 aromatic rings or a C.sub.17-22 fused pentacarbocyclic ring system containing 4, or 5 aromatic rings, or a substituted derivative thereof; the ring system Ar should be planar or deviate only slightly from planarity. Thus, the ring system contains a maximum of two non-aromatic carbon atoms which may be in the same ring, in which case they are adjacent, or in different rings;Ar is not perylene, fluoranthene, chrysene, pyrene, or triphenylene;R.sup.1 contains not more than eight carbon atoms and is a group ##STR1## wherein m is 0 or 1;R.sup.5 is hydrogen;R.sup.6 and R.sup.7 are the same or different and each is hydrogen or C.sub.

Abstract: The present invention relates to compounds of formula (I)ArCH.sub.2 R.sup.1 (I)or a monomethyl or monoethyl ether thereof (the compound of formula (I) including these ethers may contain no more than 30 carbon atoms in total); ethers, esters, thereof; acid addition salts thereof; wherein Ar is a C.sub.15-18 fused tetracarbocyclic ring system containing 3 or 4 aromatic rings or a C.sub.17-22 fused pentacarbocyclic ring system containing 4, or 5 aromatic rings, or a substituted derivative thereof; the ring system Ar should be planar or deviate only slightly from planarity. Thus, the ring system contains a maximum of two non-aromatic carbon atoms which may be in the same ring, in which case they are adjacent, or in different rings;Ar is not perylene, fluoranthene, chrysene, pyrene, or triphenylene;R.sup.1 contains not more than eight carbon atoms and is a group ##STR1## wherein m is 0 or 1; R.sup.5 is hydrogen;R.sup.6 and R.sup.7 are the same or different and each is hydrogen or C.sub.

Abstract: The present invention relates to compounds of formula (I)ArCH.sub.2 R.sup.1 (I)or a monomethyl or monoethyl ether thereof (the compound of formula (I) including these ethers may contain no more than 30 carbon atoms in total); ethers, esters, thereof; acid addition salts thereof; wherein Ar is a C.sub.15-18 fused tetracarbocyclic ring system containing 3 or 4 aromatic rings or a C.sub.17-22 fused pentacarbocyclic ring system containing 4, or 5 aromatic rings, or a substituted derivative thereof; the ring system Ar should be planar or deviate only slightly from planarity. Thus, the ring system contains a maximum of two non-aromatic carbon atoms which may be in the same ring, in which case they are adjacent, or in different rings;Ar is not perylene, fluoranthene, chrysene, pyrene, or triphenylene;R.sup.1 contains not more than eight carbon atoms and is a group ##STR1## wherein m is 0 or 1; R.sup.5 is hydrogen;R.sup.6 and R.sup.7 are the same or different and each is hydrogen or C.sub.

Abstract: The present invention relates to compounds of formula (I)ArCH.sub.2 R.sup.1 (I)or a monomethyl or a monoethyl ether thereof (the compound of formula (I) including these ethers may contain no more than 30 carbon atoms in total); ethers, esters thereof; acid addition salts thereof; wherein Ar is a fluoranthene or substituted fluoranthene ring system; R.sup.1 contains not more than eight carbon carbon atoms and is a group ##STR1## wherein m is 0 or 1;R.sup.5 is hydrogen;R.sup.6 and R.sup.7 are the same or different and each is hydrogen or C.sub.1-3 alkyl optionally substituted by hydroxy;R.sup.8 and R.sup.9 are the same or different and each is hydrogen or C.sub.1-3 alkyl; ##STR2## is a five- or six-membered saturated carbocyclic ring; R.sup.10 is hydrogen, methyl or hydroxymethyl;R.sup.11, R.sup.12 and R.sup.13 are the same or different and each is hydrogen or methyl;R.sup.14 is hydrogen, methyl, hydroxy, or hydroxymethyl.

Abstract: The present invention relates to compounds of formula (I)ArCH.sub.2 R.sup.1 (I)or a monomethyl or a monoethyl ether thereof (the compound of formula (I) including these ethers may contain no more than 30 carbon atoms in total); ethers, esters thereof; acid addition salts thereof; wherein Ar is an anthracene or substituted anthracene ring system; R.sup.1 contains not more than eight carbon carbon atoms and is a group ##STR1## wherein m is 0 or 1;R.sup.5 is hydrogen;R.sup.6 and R.sup.7 are the same or different and each is hydrogen or C.sub.1-3 alkyl optionally substituted by hydroxy;R.sup.8 and R.sup.9 are the same or different and each is hydrogen or C.sub.1-3 alkyl;--C--C-- is a five- or six-membered saturated carbocyclic ring;R.sup.10 is hydrogen, methyl or hydroxymethyl;R.sup.11, R.sup.12 and R.sup.13 are the same or different and each is hydrogen or methyl;R.sup.14 is hydrogen, methyl, hydroxy, or hydroxymethyl.

Abstract: The present invention relates to compounds of formula (I)ArCH.sub.2 R.sup.1 (I)or a monomethyl or a monoethyl ether thereof (the compound of formula (I) including these ethers may contain no more than 30 carbon atoms in total); ethers, esters thereof; acid addition salts thereof; wherein Ar is a chrysene or substituted chrysene ring system; R.sup.1 contains not more than eight carbon atoms and is a group ##STR1## wherein m is 0 or 1;R.sup.5 is hydrogen;R.sup.6 and R.sup.7 are the same or different and each is hydrogen or C.sub.1-3 alkyl optionally substituted by hydroxy;R.sup.8 and R.sup.9 are the ame or different and each is hydrogen or C.sub.1-3 alkyl; ##STR2## is a five- or six-membered saturated carbocyclic ring; R.sup.10 is hydrogen, methyl or hydroxymethyl;R.sup.11, R.sup.12 and R.sup.13 are the same or different and each is hydrogen or methyl;R.sup.14 is hydrogen, methyl, hydroxy, or hydroxymethyl.

Abstract: The present invention relates to compounds of formula (I)ArCH.sub.2 R.sup.1 (I)or a monomethyl or a monoethyl ether thereof (the compound of formula (I) including these ethers may contain no more than 30 carbon atoms in total); ethers, esters thereof; acid additon salts thereof; wherein Ar is a perylene or substituted perylene ring system; R.sup.1 contains not more than eight carbon carbon atoms and is a group ##STR1## wherein m is 0 or 1;R.sup.5 is hydrogen;R.sup.6 and R.sup.7 are the same or different and each is hydrogen or C.sub.1-3 alkyl optionally substituted by hydroxy;R.sup.8 and R.sup.9 are the same or different and each is hydrogen or C.sub.1-3 alkyl; ##STR2## is a five- or six-membered saturated carbocyclic ring; R.sup.10 is hydrogen, methyl or hydroxymethyl;R.sup.11, R.sup.12 and R.sup.13 are the same or different and each is hydrogen or methyl; R.sup.14 is hydrogen, methyl, hydroxy, or hydroxymethyl.

Abstract: The present invention relates to compounds of formula (I)ArCH.sub.2 R.sup.1 (I)or a monomethyl or a monoethyl ether thereof (the compound of formula (I) including these ethers may contain no more than 30 carbon atoms in total); ethers, esters thereof; acid addition salts thereof; wherein Ar is a chrysene or substituted chrysene ring system; R.sup.1 contains not more than eight carbon atoms and is a group ##STR1## wherein m is 0 or 1;R.sup.5 is hydrogen;R.sup.6 and R.sup.7 are the same or different and each is hydrogen or C.sub.1-3 alkyl optionally substituted by hydroxy;R.sup.8 and R.sup.9 are the same or different and each is hydrogen or C.sub.1-3 alkyl, ##STR2## is a five- or six-membered saturated carbocyclic ring; R.sup.10 is hydrogen, methyl or hydroxymethyl;R.sup.11, R.sup.12 and R.sup.13 are the same or different and each is hydrogen or methyl;R.sup.14 is hydrogen, methyl, hydroxy, or hydroxymethyl.

Abstract: The present invention describes the finding of potent antiinflammatory properties in 2,3-didemethylcolchicine and its analogs.

Abstract: The present invention relates to new tricyclic compounds of the formula: ##STR1## having valuable CNS and cardiovascular properties.

Abstract: A process for the acylation of halo- or trihalomethylbenzenes, wherein a halo- or trihalomethylbenzene is reacted with a carboxylic acid, a precursor or a derivative thereof in the presence of boron trifluoride in an amount such that the absolute pressure of the boron trifluoride within the reaction vessel exceeds 1 bar, and in the presence of hydrofluoric acid as a solvent. The resultant products are useful as intermediates in the synthesis of compounds having a phytosanitary (e.g., herbicidal) or pharmaceutical activity.

Abstract: o-Aminophenol derivatives are described represented by the formula (I) ##STR1## wherein R represents --NH.sub.2 or --NH--CO--R.sup.6 ; R.sup.1 and R.sup.2 which may be the same or different, each can represent an alkyl group or an aromatic group, or R.sup.1 and R.sup.2 together can form a ring; or R.sup.1, R.sup.2 and R.sup.3 together can form a ring ; R.sup.3 represents hydrogen, an alkyl group or an aromatic group; R.sup.4 can represent an alkyl group or an aromatic group; R.sup.5 can represent an alkyl group, an alkoxy group, an alkylthio group, an arylthio group, a halogen atom or an acylamino group; and n is 0, 1 or 2; R.sup.6 represents an alkyl group or an aromatic group; and R.sup.4 and R.sup.5 together can form a heterocyclic ring, R.sup.1 and R.sup.4 together can form a heterocyclic ring, or R.sup.1 and R.sup.5 together can form a ring; and R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5.sub.n have a total of 7 or more carbon atoms.

Abstract: The present invention relates to novel biologically active tricyclic compounds of the general formula: ##STR1## and salts thereof, in whichR.sub.1 and R.sub.2 stand for hydrogen, alkyl or alkenyl, an optionally substituted aralkyl group or an acyl group orR.sub.1 +R.sub.2 together with the nitrogen atom represent a heterocyclic 5- or 6-membered ring, andX and Y stand for hydrogen, hydroxy, halogen, alkyl or alkoxy of 1-6 carbon atoms, nitro, trifluoromethyl or an acyloxy group,which compounds have valuable biological activities, particularly anorectic activity.

Abstract: Compositions useful as visible sensitizers for photopolymerizable compositions, the sensitizers being .alpha., .beta.-unsaturated ketones formed by condensing the acetyl or diacetyl derivative of 9,10-dihydro-9,10-ethano(or propano)anthracene with a p-dialkylaminobenzaldehyde; and the photopolymerizable compositions comprising monomer, sensitizer, and initiator, with or without a binder.

Abstract: Nitrogen-containing compositions made by condensing a nitro phenol with an organic amino compound having at least one hydrogen atom directly bonded to a nitrogen or oxygen atom are useful as additives for lubricants and fuels. A specific embodiment comprises compositions made by reacting nitro phenols having hydrocarbyl substituents of up to 750 aliphatic carbon atoms with alkylene polyamines.