Abstract: A medicament for treatment of cancer comprising a compound represented by the following general formula (I) or a physiologically acceptable salt thereof:

Abstract: A medicament for treatment of cancer comprising a compound represented by the following general formula (I) or a physiologically acceptable salt thereof: Ar1—S—R1—S—Ar2 wherein R1 represents a nonmetal bridging group; Ar1 and Ar2 independently represent a group selected from the group consisting of an aryl group which has, on its ring, one to three hydroxyl groups optionally substituted with a monovalent group and said aryl group may have one to three substituents other than hydroxyl group on its ring; and a heteroaryl group which has, on its ring, one to three hydroxyl groups optionally substituted with a monovalent group, and said heteroaryl group may have one to three substituents other than hydroxyl group on its ring.

Abstract: A medicament for treatment of cancer comprising a compound represented by the following general formula (I) or a physiologically acceptable salt thereof:

Abstract: A thermal recording material comprising a support having thereon at least one layer containing an electron donating colorless dye, an electron accepting compound and a diaryloxyalkane derivative represented by the following general formulae (I) to (III)Ar.sup.1 O (CH.sub.2).sub.n OAr.sup.2 (I)Ar.sup.2 O--W--OAr.sup.3 (II)Ar.sup.2 OR--X--ROAr.sup.3 (III)wherein Ar.sup.1 represents an aryl group having at least one substituent selected from the group consisting of an alkoxyl group containing 2 or more carbon atoms, an alkoxycarbonyl group containing 3 or more carbon atoms, an aryloxyl group, an aryloxycarbonyl group, an alkenyl group containing 2 or more carbon atoms, an aryl group containing 4 or more carbon atoms an acyloxyl group containing 2 or more carbon atoms, a fulorine atom, a bromine atom, a carboxyl group, an alkylenedioxy group, a cycloalkyl group and a hydroxyl group; Ar.sup.2 and Ar.sup.

Abstract: A 2-diazo-1,2-quinone compound having a substituent group containing an alkyl group which is substituted by at least one fluorine atom is described. This compound has a capacity to change its polarity when exposed to light. The invention also provides an image forming material in which the invention compound is added to at least one of laminated layers. When these laminated layers are exposed to light, the adhesiveness of the compound-containing layer to its adjoining layer is reduced effectively due to the polarity-changing ability of the compound, thus making the easy delamination of the layers possible. This compound is applicable to many instances in which image receiving sheets are used, such as the formation of a multi-color image by a transfer method (a color proof, for example) and the preparation of a printing plate of the delamination development type.

Abstract: A recording material which comprises a support having provided thereon capsules containing a photosensitive diazonium salt, and a polymerizable coupler. The recording material can give a predetermined hue when light, pressure, heat and the like are applied alone or in combination. The main advantages of the recording material are that a specific hue can be selected safely, mixing of colors can be avoided, desensitization problem does not occur and a fixed image can be obtained.

Abstract: Disclosed is a novel recording material comprising an electron-providing colorless dye and an electron-accepting compound. The electron-accepting compound is represented by the following formula (1): ##STR1## wherein X represents a hydrogen atom, a halogen atom, a hydroxyl group, a carboxyl group, an alkoxycarbonyl group, an alkyl group, an alkoxy group, an allyl group, an aryl group, an aralkyl group or a cycloalkyl group; Ar represents an arylene group containing two to five benzene rings, an arylene group condensed with two to five benzene rings or a bisarylene group in which arylene groups are connected to each other via a divalent group; and R represents a hydrogen atom, an alkyl group, an aralkyl group or an aryloxyalkyl group. The invention also relates to the compounds of formula (1).

Abstract: A 2-diazo-1,2-quinone compound having a substituent group containing an alkyl group which is substituted by at least one fluorine atom is described. This compound has a capacity to change its polarity when exposed to light. The invention also provides an image forming material in which the invention compound is added to at least one of laminated layers. When these laminated layers are exposed to light, the adhesiveness of the compound-containing layer to its adjoining layer is reduced effectively due to the polarity-changing ability of the compound, thus making the easy delamination of the layers possible. This compound is applicable to many instances in which image receiving sheets are used, such as the formation of a multi-color image by a transfer method (a color proof, for example) and the preparation of a printing plate of the delamination development type.

Abstract: A polymerizable phenol compound represented by the formula (I): ##STR1## wherein X represents a hydrogen atom, an alkyl group, a halogen atom, an alkylsulfonyl group, a hydroxyl group or a substituted or unsubstituted phenyl group; Y represents a hydrogen atom, a hydroxyl group, an alkoxy-carbonyl group, a halogen atom, an alkyl group, an alkyl-sulfonyl group, an alkoxy group, an alkanoyloxy group, an acryloyloxy group or a methacryloyloxy group; Z represents --COO--, --O--, --SO.sub.2 -- or --SO.sub.2 NH--; R represents a divalent linkage group having an --O--, --S--, --SO.sub.2 --, --CO--, --NH--, or a cyclic structure; and P represents an acryloyloxy group or a methacryloyloxy group.

Abstract: A 2-diazo-1,2-quinone compound having a substituent group containing an alkyl group which is substituted by at least one fluorine atom is described. This compound has a capacity to change its polarity when exposed to light. The invention also provides an image forming material in which the invention compound is added to at least one of laminated layers. When these laminated layers are exposed to light, the adhesiveness of the compound-containing layer to its adjoining layer is reduced effectively due to the polarity-changing ability of the compound, thus making the easy delamination of the layers possible. This compound is applicable to many instances in which image receiving sheets are used, such as the formation of a multi-color image by a transfer method (a color proof, for example) and the preparation of a printing plate of the delamination development type.

Abstract: A hydroxybenzenesulfone compound represented by the following formula (I): ##STR1## wherein all symbol are defined in the specification, and a process for producing the compound is disclosed. Further, a process for producing a hydroxybenzenesulfone compound having an alcoholic hydroxyl group and represented by the following formula (III): ##STR2## wherein all symbols are defined in the specification, comprising the step of oxidizing a hydroxyalkylthiophenol compound having an alcoholic hydroxyl group is disclosed. Furthermore a process for producing a compound represented by the following formula (IV): ##STR3## wherein all symbols are defined in the specification, comprising the step of reacting a hydroxyalkylthiophenol compound with an acrylic acid halide or a methacrylic halide in a polar solvent is disclosed.

Abstract: A heat-sensitive recording material comprising a support having provided thereon a heat-sensitive color forming layer containing a colorless or slightly colored electron donating dye precursor and an electron accepting compound capable of forming color by the reaction with the electron donating dye precursor, wherein the heat-sensitive color forming layer contains a 1-alkoxyphenoxy-2-aryloxypropane. The recording material exhibits high sensitivity and satisfactory preservation stability.

Abstract: A heat-sensitive recording material is disclosed, which comprises a support having provided thereon a transparent heat-sensitive layer comprising color former-containing microcapsules and at least one color developer, wherein the color developer contains a compound represented by formula (I): ##STR1## wherein R represents a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, or a phenyl group; Ar represents a substituted or unsubstituted aryl group; and n is an integer of from 2 to 10.The heat-sensitive recording material provides a heat-sensitive layer having high sensitivity and good transparency.

Abstract: An image-forming material and an image recording method for using the same are disclosed. The image-forming material comprises microcapsule and a reducing agent which is present outside of the microcapsules, wherein the microcapsules contain (a) a leuco dye capable of oxidatively developing a color, (b) a photo-oxidizing agent, and (c) a phenolic compound. The image-forming material exhibits excellent image reproducibility, preservability before use, and image preservability.

Abstract: A recording medium comprising at least one electron donating colorless dye and at least one electron accepting compound, wherein the electron accepting compound is a salicylic acid compound represented by formula (I): ##STR1## wherein R represents a divalent group; X and Y, which may be the same or different, each represents a hydrogen aotm, an alkyl group, an aryl group, an alkoxy group, or a halogen atom; and Z represents a hydrogen atom, a carboxyl group, an alkyl group, an aryl group, an alkoxy group, or a halogen atom, or a metal salt thereof.

Abstract: A heat-sensitive recording material comprising a support having thereon a recording layer containing an electron-donating colorless dye and an electron-accepting compound, wherein the electron-accepting compound is selected from salicylic acid derivatives having an acyl group, a substituted amino group, an aryloxymethyl group, an alkoxy group or an aryloxy group, or metal salts thereof, and hydroxynaphthoic acid derivatives having an alkyloxy group or metal salts thereof, the recording layer further containing a metal compound in an amount of from about 0.05 to about 10 mols per mol of the electron-accepting compound.

Abstract: A 5-hydroxy-N-substituted indole derivative and the process for producing the indole derivative are described the indole derivative is produced by a process comprising reacting a phenol derivative having an unsaturated double bond in the m-position with a diazonium salt.

Abstract: A process for preparing a zinc salt of a salicylic acid compound which comprises reacting a salicylic acid compound and/or an alkali metal salt thereof with a zinc compound, wherein the reaction is carried out in a mixture of water and an organic solvent, and wherein the organic solvent has a water solubility of not more than 0.1 g/100 g water at 25.degree. C. and in which the zinc salt has a solubility of not less than 10 g/100 g organic solvent at 25.degree. C. The process achieves improved workability in collection of the product and improved yield and purity of the product.

Abstract: A heat-sensitive recording material is disclosed, which comprises a support having thereon a heat-sensitive recording layer comprising a diazo compound and a coupler precursor compound, said coupler precursor compound being capable of forming a compound having an ability of coupling with said diazo compound upon heating.

Abstract: A heat-sensitive recording material is disclosed. The material comprises a support having provided thereon a recording layer containing one or more diazo compound, a coupling component, and at least one thiohydroquinone derivative as a sensitizing agent.