Abstract:
The present invention is concerned with the therapeutic composition comprising as an active ingredient a compound of the formula:(R.sub.1)(R.sub.2)Ar--Z--M--Ar.sub.1 (R.sub.3)(R.sub.4) Iand salts thereof;whereinAr and Ar.sub.1 are independently phenyl, naphthyl or a nitrogen, oxygen, or sulfur heterocyclic ring;Z is an alkylene chain containing from 1 to 5 carbon atoms in the principal chain and up to a total of 10 carbon atoms;M is oxygen, sulfur, or NR.sub.5 ;R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently H, lower alkyl, lower alkoxy, hydroxy, halo, trihalomethyl, hydroxy lower alkyl, carboxy, formyl, aryl, aryloxy, benzyloxy, lower alkanoyl, carboxy lower alkoxy, nitro, amino, lower alkylamino, dilower alkylamino, cyano, lower alkanoyloxy, carbamoyl, lower alkoxy-alkoxy, carbo-lower-alkoxy-alkoxy, or tetrahydropyranylmethyl; andR.sub.5 is hydrogen or lower alkyl.
Abstract:
An adsorptive separation process for separating ortho-nitrotoluene from a feed mixture comprising the ortho-isomer and at least one other isomer of nitrotoluene. The process comprises contacting the feed mixture with an adsorbent comprising a type X zeolite, containing at the exchangeable cationic sites cations of metals from Group IA or IIA of the Periodic Table of Elements, selectively adsorbing substantially all of the ortho-nitrotoluene to the substantial exclusion of the remaining isomers, removing the non-adsorbed portion of the feed mixture from contact with the adsorbent, and thereafter recovering high-purity ortho-isomer by desorption with nitrobenzene.
Abstract:
New hydroquinone ether compounds of formula I are described: ##STR1## wherein p is 1 or 2 and Q is 0 or 1, provided that p+q is 1 or 2, R is a residue of formula II ##STR2## and R.sub.o, R.sub.oo, R.sub.1, R.sub.2, R.sub.3, Q, n and k are as defined in the specification,The new compounds are useful e.g. as stabilizers in photographic material.
Abstract:
Dialkenyl diacetylenes, especially divinyl diacetylenes having liquid crystalline phases, are provided. In accordance with certain preferred embodiments, diacetylenes having liquid crystalline phases are provided which may be polymerized while in the liquid crystalline state to yield conjugated polymers. The processes for the polymerization of such liquid crystalline diacetylenes and for the elaboratiPortions of this work have been supported by the Defense Advanced Research Projects Agency, Grant No. DAAK-70-77-C-0045 (5-26502). The United States Government has certain rights in this invention.
Abstract:
A process for the preparation of cinnamic acid is provided by the present invention in which an optionally substituted benzaldehyde and alkali metal salt of carboxylic acid and/or alkali metal (bi) carbonate, as condensing agents, are heated up to a temperature of 100.degree.-220.degree. C. and thereafter there is introduced into the so heated mixture acetic anhydride in at least a stoichiometric amount based upon the amount of optionally substituted benzaldehyde employed. The process can be carried out by heating up a reaction mixture to 100.degree.-220.degree. C. which is free of acetic anhydride or one which contains acetic anhydride but less than a stoichiometric amount thereof based upon the amount of optionally substituted benzaldehyde.
Abstract:
A phosphorous acid or mixture of phosphorous acids is used as catalyst in the esterification reaction of phenol and carboxylic acids. Water is removed from the reaction zone in an efficient manner. An ester product of high purity and excellent color with minimal by-products is characteristically produced.
Abstract:
Compounds of formula (I): ##STR1## or a salt or acyl derivative thereof; whereinY is either --CH.dbd.N or ##STR2## R.sup.1 is hydroxy, halogen, (C.sub.1-4) alkyl, or (C.sub.1-4)alkoxy, R.sup.2 is a nitrogen-containing, basic substituent,R.sup.3 is hydrogen, hydroxy, halogen, (C.sub.1-4) alkyl, (C.sub.1-4) alkoxy or a nitrogen-containing, basic substituent, andR.sup.4 is hydrogen or hydroxy,are useful in treating diarrhoea and scours.
Abstract:
The present invention relates to 2-arylethyl ether or thioether derivatives represented by the following general formula [I]: ##STR1## wherein Ar stands for an aryl group, R.sup.1 stands for straight or branched chain alkyl group of 1 to 6 carbons, R.sup.2 stands for a hydrogen atom, or a methyl or ethyl group, R.sup.3 stands for a halogen atom, or a methyl or methoxyl group, R.sup.4 stands for a hydrogen or halogen atom, or a lower alkyl or lower alkoxy group, and n is an integer of 1 or 2 with the proviso that when n is 2, the groups R.sup.4 may be the same or different, and Y stands for an oxygen or sulfur atom, and also to processes for the preparation of these ethers or thioethers and a use of these ethers or thioethers.These compounds of the present invention have excellent insecticidal and acaricidal activities while the toxicity of these compounds are very low.
Abstract:
1,6-Dialkyl-3-substituted-4-nitrophenyl-4,7-dihydropyrazolo[3,4-b]pyridine-5-carboxylic acid esters as Ca blocker having potent antihypertensive and coronary vasodilating actions and useful in treatment of diseases in circulatory system such as angina pectoris, hypertension, cerebrovascular dysfunction, arrhythmia, etc. with no systole inhibitory action, prepared from nitrobenzylideneacetoacetic acid esters on reaction with 3-substituted-5-amino-1-alkylpyrazoles.
Abstract:
A method for the total synthesis of cyclosporins, in particular Cyclosporin A, cyclosporins produced in accordance with the method of the invention and novel intermediates, in particular novel [1S, 2R, 3R]- and [1R, 2S, 3S]-1-nitrilo-1-carbonyl-3-methyl-2-oxy-heptanes and -hept-5-enes, employed in the method of the invention.