Abstract:
What are disclosed are pyrrolidinylsulfamoylbenzoic acid compounds of the formula ##STR1## in which R.sup.1 and R.sup.2 denote C.sub.1 -C.sub.4 alkyl and one of the radicals R.sup.1 or R.sup.2 may be hydrogen, R.sup.3 and R.sup.3' denote hydrogen or C.sub.1 -C.sub.4 alkyl or together denote a C--C linkage, R.sup.4 and R.sup.4' denote hydrogen, halogen, CF.sub.3, alkyl or C.sub.1 -C.sub.2 alkoxy, hydroxy, amino or dimethylamino in the various positions of the aryl nucleus, or together denote 3,4-methylenedioxy, R.sup.5 and R.sup.6 denote hydrogen, C.sub.1 -C.sub.4 alkyl or benzyl, Ar denotes phenyl or a 5-membered or 6-membered heteroaromatic ring containing a O, S or N atom and X is omitted or denotes oxygen, sulfur, NH, or CH.sub.2, and their pharmaceutically acceptable salts with bases or acids. The compounds and salts have a salidiuretic action and can be used for the treatment of edematous diseases.
Abstract:
The invention provides thienylbenzoic acid derivatives of the formula I ##STR1## in which R.sup.1 is an alkyl radical having from 1 to 3 carbon atoms, a phenyl, thienyl or furyl radical optionally substituted by halogen, CF.sub.3, CH.sub.3 or OCH.sub.3 ; R.sup.2 is hydrogen, halogen or CH.sub.3 ; R.sup.3 is hydrogen or alkyl having from 1 to 4 carbon atoms or benzyl; and n is 1 or 2; and the pharmaceutically tolerable salts thereof with acids or bases.
Abstract:
5-Sulfamoylbenzoic acids substituted in 4-position by various substituents and in 3-position by a cyclic amino group having sali-diurectic properties, and a process for their manufacture.
Abstract:
Cephem derivatives of the general formula ##STR1## in which the R.sub.2 O group is in the syn-position, a process for their manufacture and pharmaceutical formulations which are active against bacterial infections and contain these compounds.
Abstract:
A process is disclosed for preparing 5-sulfamoylbenzoic acid derivatives substituted in 4-position by various substituents and in 3-position by a cyclic amino group and having sali-diuretic properties. Novel intermediate compounds are also disclosed.
Abstract:
Novel stable crystalline hydrate of D form of the syn isomer of sodium 3-acetoxymethyl-7-[2-(2-amino-4-thiazolyl)-2-methoxyimino-acetamido]-ceph-3-eme-4-carboxylate having the formula ##STR1## which has excellent antibiotic activity against both gram negative and gram positive bacteria and a process for its preparation.
Abstract:
Cephem derivatives of the formula ##STR1## in which R.sup.1 denotes hydrogen or low-molecular alkoxy, R.sup.2 denotes hydrogen, optionally substituted alkyl, phthalide or a cation, X denotes sulfur, oxygen or CH.sub.2 and A denotes hydrogen, alkoxy, halogen or a group --CH.sub.2 Y, in which Y represents hydrogen, acyloxy, alkoxy, optionally substituted carbamoyloxy or a group --SR.sup.3, in which R.sup.3 can represent acyl, alkyl or an optionally substituted 5-membered or 6-membered heterocyclic structure are disclosed as valuable antibiotics which are well suited for combating Gram-positive and in particular Gram-negative infections and also have an unexpectedly good action against penicillinase-forming staphylococci.
Abstract:
Salidiuretically-active 3-pyrrolo-5-sulfamoylbenzoic acids having a methylphenoxy or chlorophenoxy group substituted in the 4-position, and alkyl esters thereof, are disclosed, as are methods of making and using the same.
Abstract:
The present invention relates to a new process for the preparation of 6-aminopenicillanic acid and 7-amino-cephalosporanic acid derivatives by treating the corresponding acylamino derivatives with phosphinic acid chlorides, reacting the mixed acid anhydrides so obtained with agents forming imidohalides, converting the imido halides into iminoethers and hydrolysing them.
Abstract:
A heat exchanger for cooling a hot gas that contains solid particles, comprising heat exchanger tubes through which the hot gas flows, with the tubes being surrounded by a casing, and with ends of the tubes being welded, via weld seams, into bores of respective tube plates disposed at the ends of the casing. A protective layer coats the end face of the gas inlet side tube plate, an inner wall of the bores, the weld seams, and an inlet region of the heat exchanger tubes. The protective layer comprises a metallic adhesive layer, a high temperature and erosion resistant ceramic layer, and a high temperature and erosion resistant metal layer disposed between the adhesive layer and the ceramic layer.