Abstract:
Described is a method for the preparation of renin inhibitors such as aliskiren, and intermediates useful therein. The method introduces a nitrogen-containing intermediate such as a lactone of formula (8). with R4 being a branched C3—6 alkyl. In the preparation of the lactone, or related intermediates, a desired stereochemical configuration can be controlled by starting from a chiral aldehyde satisfying formula (10).
Abstract:
The invention relates to new butane acid derivatives comprising a cyanide group, pharmaceutical compositions containing said butane acid derivatives and the use of said butane acid derivatives in the production of pharmaceutical compositions for treating various illnesses.
Abstract:
N-Phenyl-2-cyano-3-hydroxycrotonamide derivatives and their use as pharmaceuticals having an immunomodulatory property. The use of N-phenyl-2-cyano-3-hydroxycrotonamide derivatives of the formula I ##STR1## in which R.sup.1 is a hydrogen atom or (C.sub.1 -C.sub.4)-alkyl, R.sup.2 is CN, CX.sub.3, WCX.sub.3, W(CH.sub.2).sub.n CX.sub.3, NO.sub.2, (CH.sub.2).sub.n CX.sub.3, or halogen, in which X is halogen, W is an oxygen or sulfur atom and n is an integer from 1 to 3, R.sup.3 is (C.sub.1 -C.sub.4)-alkyl, (C.sub.3 -C.sub.6)-cycloalkyl, CN or --CO--R.sup.4, in which R.sup.4 is (C.sub.1 -C.sub.4)-alkyl or (C.sub.3 -C.sub.6)-cycloalkyl, and/or their physiologically tolerable salts, for the treatment of rheumatic diseases, autoimmune diseases, and of rejection reactions of the organ recipient to the transplanted organ, is described.
Abstract:
An ester is caused to act on a 2-substituted-3-hydroxycarboxylic acid ester as a racemate in the presence of hydrolase under substantially anhydrous conditions to effect a transesterification resulting in the resolution.The compound thus resolved is converted to an optically active 2,6-cis-2,5,6-substituted-1,3-dioxan-4-one and the resulting compound is recrystallized to give optically active 5,6-anti-2,5,6-substituted-1,3-dioxan-4-one and 5,6-syn-2,5,6-substituted-1,3-dioxan-4-one. Thus an optically active compound having plural chiral centers.Further, an optically active 2,5,6-substituted-1,3-dioxan-4-one obtained by transesterification and recrystallization is reacted with an alcohol to produce an optically active 2-substituted-3-hydroxycarboxylic acid ester.
Abstract:
An improved process for the preparation of trans-6- 2-(substituted-pyrrole-1-yl)alkyl!pyran-2-ones by a novel synthesis is described where .alpha.-metalated N,N-disubstituted acetamide is converted in seven operations to the desired products, and specifically, a process for preparing (2R-trans)-5-(4-fluorophenyl)-2-(1-methylethyl)-N, 4-diphenyl-1- 2-(tetrahydro-4-hydroxy-6-oxo-2H-pyran-2-yl)ethyl!-1H-pyrrole-3-carboxamide, as well as other valuable intermediates used in the processes and prodrugs which are bioconverted to hypolipidemic and hypocholesterolemic agents and pharmaceutical compositions of the same.
Abstract:
A dendritic structure includes a core and repeating units, wherein the repeating units comprise units of the type ABxCy, wherein x is 2, 3, or 4, wherein y is 1, 2, or 3, wherein C is selected from the group consisting of azides and alkynes, and wherein every repeating unit is bound to at least one other unit with at least one bond selected from the group consisting of the group consisting of an ester, an amide, a thioether, an ether, a urethane, an amine, and an imine. Advantages include that a “one-pot” growth of the dendritic structure is possible. It is possible to have more functional groups in a dendritic structure. It is possible to add different functional groups simultaneously both to an inner layer and to an outer layer in a dendritic structure.
Abstract:
Cooling compounds are provided having the formula: wherein, m is 0 or 1, Y and Z are selected independently from the group consisting of H, OH, C1-C4 straight or branched alkyl, and a C1-C4 straight or branched alkoxy, X is (CH2)n—R, where n is 0 or 1 and R is a group with non-bonding electrons, with the provisos that: (a) when Y and Z are H, X is not F, OH, MeO or NO2 in the 4-position and is not OH in the 2 or 6-position (b) when Y or Z is H then X, Y and Z are such that (i) the groups in the 3- and 4-positions are not both OMe, (ii) the groups in the 4- and 5-positions are not both OMe, (iii) the groups in 3- and 5-positions are not OMe if the group in the 4-position is OH, and (iv) the groups in the 3- and 5-positions are not OH if the group in the 4-position is methyl.
Abstract:
An improved process for the preparation of trans-6-[2-(substituted-pyrrole-1-yl)alkyl]pyran-2-ones by a novel synthesis is described where .alpha.-metalated N,N-disubstituted acetamide is converted in seven operations to the desired products, and specifically, a process for preparing (2R-trans)-5-(4-fluorophenyl)-2-(1-methylethyl)-N,4-diphenyl-1-[2-(tetrahydro-4-hydroxy-6-oxo-2H-pyran-2-yl)ethyl]-1H-pyrrole-3-carboxamide, as well as other valuable intermediates used in the processes and prodrugs which are bioconverted to hypolipidemic and hypocholesterolemic agents and pharmaceutical compositions of the same.
Abstract:
A compound selected from the group consisting of a compound of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms and alkenyl and alkynyl of 2 to 6 carbon atoms, R.sub.2 is hydrogen or alkyl of 1 to 3 carbon atoms, Y is selected from the group consisting of ##STR2## Z.sub.1 and Z.sub.2 are individually selected from the group consisting of hydrogen, halogen, --NO.sub.2, --CN and alkyl of 1 to 3 carbon atoms, R.sub.3 is hydrogen or alkyl of 1 to 3 carbon atoms, m is an integer from 0 to 6, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are individually selected from the group consisting of hydrogen, halogen, --CN, --NO.sub.2, alkyl, alkylthio and alkoxy of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, --COR.sub.10, --(CH.sub.2).sub.n --CX.sub.3, --O--(CH.sub.2).sub.n CX.sub.3 and --S--(CH.sub.2).sub.n --CX.sub.3, R.sub.10 is selected from the group consisting of hydrogen, alkyl of 1 to 6 carbon atoms and cycloalkyl of 3 to 6 carbon atoms, n is an integer from 0 to 3, X is halogen or R.sub.6 and R.sub.7 together form --O--CH.sub.2 --O-- and their non-toxic, pharmaceutically acceptable salts with a base having anti-inflammatory and immunomodulatory activity.
Abstract:
An ester is caused to act on a 2-substituted-3-hydroxycarboxylic acid ester as a racemate in the presence of hydrolase under substantially anhydrous conditions to effect a transesterification resulting in the resolution.The compound thus resolved is converted to an optically active 2,6-cis-2,5,6-substituted-1,3-dioxan-4-one and the resulting compound is recrystallized to give optically active 5,6-anti-2,5,6-substituted-1,3-dioxan-4-one and 5,6-syn-2,5,6-substituted-1,3-dioxan-4-one. Thus an optically active compound having plural chiral centers.Further, an optically active 2,5,6-substituted-1,3-dioxan-4-one obtained by transesterification and recrystallization is reacted with an alcohol to produce an optically active 2-substituted-3-hydroxycarboxylic acid ester.