摘要:
Substituted aurones of formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are the same or different and can each represent hydrogen, halogen, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, C.sub.3-8 cycloalkyl, optionally substituted phenyl, C.sub.1-6 haloalkyl, amido, amino, cyano, hydroxy, nitro, C.sub.2-4 alkenyl, carboxyl, tetrazol-5-yl and --CH.dbd.CHCOOH; orwherein R.sup.1 and R.sup.2 taken together can represent a group of formula --CH.dbd.CH--CH.dbd.CH-- provided that at least one of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 is carboxyl, tetrazol-5-yl or --CH.dbd.CHCOOH;or a pharmaceutically-acceptable salt or ester thereof, are effective in the prophylactic chemotherapy of allergic conditions such as bronchial asthma.
摘要:
2-Substituted benzofurans which can be further substituted are prepared by known methods. Said compounds are useful as brighteners of high-molecular organic materials.
摘要:
A process for the catalytic oxidation of olefins to unsaturated aldehydes and acids and the ammoxidation of olefins to unsaturated nitriles in which the catalyst comprises a promoted, reduced, antimony oxide-molybdenum oxide-containing catalyst.
摘要:
Benzofuranes are obtained by intramolecular condensation of aromatic oxo compounds having an oxymethylene group in ortho position. The condensation is effected with strongly alkaline agents in solution or in an alkali metal hydroxide melt. The products are useful as scintilators and optical brighteners.
摘要:
This invention relates to substituted naphthalen compounds and their use in the synthesis of D-homosteroids. The latter compounds are useful as estrogenic agents in the treatment of laboratory and domestic animals.
摘要:
BENZOFURANS, BENZOTHIOPHENES, INDOLES, NAPHTHOFURANS AND BENZOFURANOBENZOFURANS WHICH ARE SUBSTITUTED BY 4VINYLPHENYL GROUPS WHEREIN THE 2-POSITION OF THE VINYL IS SUBSTITUTED BY A MONOVALENT AROMATIC RADICAL HAVING ONE TO THREE AROMATIC RINGS ARE OPTICAL BRIGHTENING AGENTS USEFUL FOR WHITENING AND BRIGHTENING NATURAL AND SYNTHETIC FIBERS, PAPERS, RESINS AND THE LIKE. THE COMPOUNDS ARE CONVENIENTLY PREPARED BY INTERACTING BENZOFURANS, BENZOTHIOPHENES, INDOLES, NAPHTHOFURANS OF BENZOFURANOBENZOFURANS WHICH ARE SUBSTITUTED BY A P-TOLYL GROUP, WITH AN AROMATIC ALDEHYDE OR PREFERABLY THE ANIL DERIVATIVE THEREOF.
摘要:
This invention relates to substituted naphthalenones and naphthalenediones useful in the synthesis of D-homosteroids. The latter steroids are useful as estrogenic agents in the treatment of laboratory and domestic animals.
摘要:
The invention refers to a class of new compounds as well as a new process for making these compounds. The new compounds correspond to the general formula WHEREIN A1 represents a heterocyclic ring system which (a) contains at least one five-membered to six-membered heterocyclic ring having at least one ring oxygen atom and/or one ring sulphur atom, (b) is free of ring nitrogen atoms and of hydrogen atoms which are replaceable by alkali metal, and (c) is bonded by a ring carbon atom to a ring carbon atom of B1, or has two adjacent ring carbon atoms in common with two adjacent ring carbon atoms of B1, and wherein furthermore (a) B1 denotes a benzene ring or a heterocyclic ring of aromatic character containing five to six ring members, with these rings being permitted to contain further condensed-on aromatic, heterocyclic or hydroaromatic fivemembered to six-membered rings, but preferably only one such ring, and (b) v denotes an integer from 1 to 2, and (c) wherein m denotes an integer from 1 to 4 in the case of a single bond between A1 and B1, and denotes the numbers 1 or 2 in the case of rings A1 and B1 being condensed with one another, and wherein E1 represents an aromatic carbocyclic or heterocyclic rings system containing five to six ring members, which may contain further condensed-on aromatic or hydroaromatic ring system of carbocyclic or heterocyclic nature, and may contain aromatic, araliphatic, cycloaliphatic, aliphatic or other non-chromophoric substituents, with the exception of methyl groups, which are capable of carbanion formation in the presence of alkali metal ions.
摘要:
The specification discloses benzofuran derivatives characterized by the formula: WHEREIN R represents a lower alkyl group, a phenyl group or a lower alkyl, lower alkoxy, dioxy-lower-alkylene, fluorine, chlorine, bromine or trifluoromethyl substituted phenyl group or a lower alkoxy substituted styryl group, R1 represents a hydrogen, fluorine, chlorine or bromine atom or a lower alkyl or lower alkoxy group, or together with R2 represents a benzo group, R2 represents a hydrogen, fluorine, chlorine or bromine atom or a lower alkyl or lower alkoxy group or provided R1 is a hydrogen atom, a nitro, amino, hydroxy, lower acyloxy, lower alkoxybenzoyloxy, lower dialkylamino or lower acylamino group, A represents an alkylene group containing not more than four carbon atoms, R3 represents a hydrogen atom or a lower alkyl group, R4 represents a lower alkyl, Beta -phenylethyl or benzyl group or NR3R4 represents a pyrrolidino, piperidino, hexamethyleneimino, morpholino, lower dialkylmorpholino, piperazino, lower alkyl piperazino, benzylpiperazino or tetrahydropyridino group, in the form of the free base or of a pharmaceutically acceptable salt thereof.