Abstract:
The present invention relates to a novel process for the preparation of 2-(2,4-dichlorophenoxy)-phenylacetic acid a compound having useful anti-inflammatory properties. The process comprises reacting a 2-halo-phenylacetic acid or a salt thereof under basic conditions in the presence of metallic copper with 2,4-dichlorophenol or a salt thereof.
Abstract:
Oxothia compounds, especially 2-oxo-2,3-dihydro-benzo[b]-thiophene compounds of the formula ##STR1## in which Ph represents an optionally substituted 1,2-phenylene radical, X represents oxygen or sulphur, R.sub.1 represents an organic radical bonded via a carbon atom and R.sub.2 denotes hydrogen or an optionally substituted hydrocarbon radical of aliphatic character, and their salts are useful as peripheral analgetics and/or as antiphlogistic uricosuric and/or thrombolytic agents.
Abstract:
Thioformamidophosphono-acetates are prepared by reacting an isocyano compound of the formula C=N--CH.sub.2 --X.sub.1 in the presence of a base with a compound of the formula R.sub.o --X.sub.2, in which compounds one of the groups X.sub.1 and X.sub.2 represents a protected carboxyl group of the formula --C(=O)--OR.sub.1 and the other a disubstituted phosphono group of the formula --P(.fwdarw.O)(OR).sub.2, and wherein R.sub.o represents a reactive etherified or esterified hydroxyl group, and adding hydrogen sulphide on to the isocyano group of the phosphono-isocyano-acetate formed as an intermediate.
Abstract:
The 2-substituted 5-chlorimidazoles of general formula: ##STR1## are new intermediate products for the production of antihypertensive pharmaceutical agents or of herbicidal compounds. A process for the production of these intermediate products as well as a new process for the further reaction of 2-substituted 5-chlorimidazoles of general formula I, wherein R.sub.1 is hydrogen, to the 2-substituted 5-chlorimidazole-4-carbaldehydes of general formula: ##STR2##
Abstract translation:2-取代的5-氯咪唑,其通式如下:图1是生产抗高血压药剂或除草化合物的新中间产物。 制备这些中间体产物的方法以及通式I的其它R 1为氢的2-取代的5-氯咪唑与2-取代的5-取代的5-氯咪唑-4-碳醛进一步反应的新方法 公式: II
Abstract:
A process for the production of 2-substituted 5-chlorimidazole-4-carbaldehydes of the general formula: ##STR1## wherein R is hydrogen, an alkyl group, and alkenyl group, a cycloalkyl group, a benzyl group, a phenyl group or an aryl group. These compounds form important intermediate products for the production of antihypertensive pharmaceutical agents or herbicidal compounds.
Abstract:
A process for the production of 4,5,6,7-tetrahydrothieno-[3,2-c]-pyridines of the formula: ##STR1## Thus, in the case of a 4-oxo-3-piperidine-3-carboxylic acid ester of the formula: ##STR2## an allyl group is introduced in the 3 position, the ester function in the 3 position is removed, the resultant compound of the formula: ##STR3## is ionized, reduced to the corresponding aldehyde of the formula: ##STR4## and with H.sub.2 S/HCl in the presence of a metal halide is cyclized to the end product. The synthesized compounds have antithrombotic action.
Abstract:
The present invention relates to a novel polymeric carrier, a process for its production and its use for the preparation of peptides and their intermediates. The process comprises reacting chloromethylated polystyrene (cross-linked with divinylbenzene) with a 4-hydroxy-2-substituted-benzyl alcohol (linker), attaching .alpha.-amino acids with amino and side-chain protection to the carrier thus obtained, and building up a peptide according to the method known in the field of solid phase peptide synthesis (SPPS). The method allows removal of intermediates or final products under extremely mild acidic conditions giving products in high state of purity and yield. The 2-substituent consists of an electron donating group, such as methoxy.
Abstract:
2-Penem-3-carboxylic acid compounds of the formula ##STR1## in which R.sub.1 represents hydrogen, an organic radical bonded by a carbon atom to the ring carbon atom or an etherified mercapto group andR.sub.2 represents hydroxy or a radical R.sub.2.sup.A forming together with the carbonyl grouping --C(.dbd.O)-- a protected carboxyl group, 1-oxides thereof, as well as salts of such compounds having salt-forming groups, in racemic and optically active form, processes for their preparation, pharmaceutical compositions containing such compounds, and their use as antibiotics, and intermediates and their processes which are useful in the production of the compounds of the formula I.
Abstract:
Oxothia compounds, especially 2-oxo-2,3-dihydro-benzo[b]thiophene compounds of the formula ##STR1## in which Ph represents an optionally substituted 1,2-phenylene radical, X represents oxygen or sulphur, R.sub.1 represents an organic radical bonded via a carbon atom and R.sub.2 denotes hydrogen or an optionally substituted hydrocarbon radical of aliphatic character, and their salts are useful as peripheral analgetics and/or as antiphlogistic uricosuric and/or thrombolytic agents.
Abstract:
Thioformamidophosphono-acetates are prepared by reacting an isocyano compound of the formula C.dbd.N--CH.sub.2 --X.sub.1 in the presence of a base with a compound of the formula R.sub.o --X.sub.2, in which compounds one of the groups X.sub.1 and X.sub.2 represents a protected carboxyl group of the formula --C(.dbd.O)--OR.sub.1 and the other a disubstituted phosphono group of the formula --P(.fwdarw.O) (OR).sub.2, and wherein R.sub.o represents a reactive etherified or esterified hydroxyl group, and adding hydrogen sulphide on to the isocyano group of the phosphono-isocyano-acetate formed as an intermediate.