Abstract: The present invention for a disk drive is a damping feature applied to the contact area between the flexible circuit and the pivot housing, reducing the resonance energy transferred from the flexible circuit to the pivot housing. This invention reduces the direct energy transfer from the flexible circuit to the pivot house by applying a damping feature as embodied by damping material on the flexible circuit or pivot housing at the point at which they make contact or by adding a damper to the flexible circuit re-routing tip area between the pivot housing and the flexible circuit. The damping feature absorbs the resonance energy from the flexible circuit to the damping feature material and reduces the energy transferred from the flexible circuit to the pivot housing.

Abstract: A housing providing for improved windage characteristics in a disc drive, the housing having a multiple bypass configured to receive and direct fluid flow away from a rotating disc pack assembly. The housing further includes a shroud to contain some fluid flow with the disc pack assembly.

Abstract: The enantiomers of methyl 4-(2-chloro-4-fluorphenyl)-2-(3,5-difluoro-2-pyridinyl)-6-methyl-1,4-dihydro-5-pyrimidinecarhoxylate can be separated with the aid of (−)-camphanic acid.

Abstract: The invention relates to a process and intermediates for the preparation of enantiomerically pure cycloalkanoindolecarboxylic acids and azaindolecarboxylic acids and pyrimido[1,2a]indolecarboxylic acids and their activated derivatives, characterized in that the tolyl acetic acid is first esterified with a chiral alcohol, then diastereoselective substitution at &agr;-carbon atoms is carried out and this product is halogenated in the tolyl group and then reacted with appropriate cycloalkanoindoles, cycloalkanoazaindoles or pyrimido[1,2a]indoles. It is possible by this method to prepare specifically, in high purity, the enantiomerically pure carboxylic acids which are intermediates for valuable medicaments.

Abstract: A housing providing for improved windage characteristics in a disc drive, the housing having a multiple bypass configured to receive and direct fluid flow away from a rotating disc pack assembly. The housing further includes a shroud to contain some fluid flow with the disc pack assembly.

Abstract: The invention relates to a method for the enantiomer separation of cis-8-benzyl-7,9-dioxo-2,8-diazabicy-clo[4.3.0]nonane (also described below as cis-6-benzyl-5,7-dioxooctahydropyrrolo[3,4-b]pyridine or dioxopyrrolopiperidine). The invention also relates to a method for producing (1S, 6R)- and (1R, 6S)-8-benzyl-7,9-dioxo-2,8-diazabicyclo[4.3.0]nonane using the above method. The invention further relates to the (−)-2,3:4,6-di-O-isopropylidene-2-keto-L-gulonic acid salts of (1S, 6R)- and (1R, 6S)-8-benzyl-7,9-dioxo-2,8-diazabicyclo[4.3.0]nonane and to a method for producing the same. Finally, the invention relate to a method for the enantiomer enrichment of (1S, 6R)-8-benzyl-7,9-dioxo-2,8-diazabicyclo[4.3.0]-nonane.

Abstract: Substituted triols are prepared by reducing appropriately substituted carboxylic esters. The substituted triols can be used as active substances in medicaments.

Abstract: The invention relates to a process for preparing (S,S)-8-benzyl-2,8-diazabicyclo[4.3.0]nonane.

Abstract: The present invention relates to a highly enantioselective process for the preparation of enantiomerically pure cyclopentane- and -pentene .beta.-amino acids of the general formula (I) ##STR1## in which A and L, A and D or E and L, D and E, R.sup.2, R.sup.3, T and R.sup.1 have the meaning given in the description.

Abstract: The invention relates to a process and intermediates for the preparation of enantiomerically pure cycloalkanoindolecarboxylic acids and azaindolecarboxylic acids and pyrimido?1,2a!indolecarboxylic acids and their activated derivatives, characterized in that the tolyl acetic acid is first esterified with a chiral alcohol, then diastereoselective substitution at .alpha.-carbon atoms is carried out and this product is halogenated in the tolyl group and then reacted with appropriate cycloalkanoindoles, cycloalkanoazaindoles or pyrimido?1,2a!indoles. It is possible by this method to prepare specifically, in high purity, the enantiomerically pure carboxylic acids which are intermediates for valuable medicaments.

Abstract: The present invention relates to a new highly selective process for the preparation of enantiomerically pure halogeno-phenyl-substituted 1,4-dihydropyridine-3,5-dicarboxylic esters of the general formula (I) ##STR1## in which R.sup.1 to R.sup.3 have the meanings given in the description.

Abstract: Trisubstituted biphenyls are prepared by reacting corresponding pyridones with biphenylmethyl halogen compounds. The trisubstituted biphenyls can be employed as active compounds in medicaments.

Abstract: Substituted triols are prepared by reducing appropriately substituted carboxylic esters. The substituted triols can be used as active substances in medicaments.

Abstract: The 6-(hydroxymethyl-ethyl)pyridines are prepared by a process in which the 3-hydroxymethylpyridines which are hydroxyl-protected in the 6-position are oxidized to the 3-aldehyde, this is then converted into the corresponding oxoheptenoic acid derivative using a Wittig-Homer reaction, after this the oxo group is reduced to the hydroxyl group and then the isomers are separated by chromatography. The 6-(hydroxymethyl-ethyl)pyridines are suitable as active compounds in medicaments, in particular in medicaments having antiarteriosclerotic activity.

Abstract: The present invention relates to a new highly selective process for the preparation of enantiomerically pure halogeno-phenyl-substituted 1,4-dihydropyridine-3,5-dicarboxylic esters of the general formula (I) ##STR1## in which R.sup.1 to R.sup.3 have the meanings given in the description.

Abstract: Heterotricyclically substituted phenyl-cyclohexanecarboxylic acid derivatives are prepared by reacting the heterocyclic compounds with cyclohexanecarboxylic acid derivatives which are substituted by benzyl halide radicals. The compounds can be employed as active compounds in medicaments.

Abstract: Substituted pyridines and 2-oxo-1,2-dihydropyridines are prepared by reaction of correspondingly substituted halogenobenzenes with tetrazolylboronic acids. The substituted pyridines and 2-oxo-1,2-dihydropyridines according to the invention can be employed as active compounds in medicaments, in particular for the treatment of arterial hypertension and atherosclerosis.

Abstract: Heterotricyclically substituted phenyl-cyclohexane-carboxylic acid derivatives are prepared by reacting the heterocyclic compounds with cyclohexanecarboxylic acid derivatives which are substituted by benzyl halide radicals. The compounds can be employed as active compounds in medicaments.

Abstract: This invention relates to benzolididene compounds of the formula ##STR1## in which R.sup.2 represents the radical ##STR2## in which R.sup.4 and R.sup.5 are identical or different and denote halogen, cyano, ethinyl, trifluoromethoxy, methylthio, nitro, trifluoromethyl or straight-chain or branched alkyl, alkenyl, alkinyl or alkoxy having up to 4 carbon atoms, and one of the substituents optionally represents hydrogen,or a salt thereof.

Abstract: This invention relates to benzolididene compounds of the formula ##STR1## in which R.sup.2 represents the radical ##STR2## in which R.sup.4 and R.sup.5 are identical or different and denote halogen, cyano, ethinyl, trifluoromethoxy, methylthio, nitro, trifluoromethyl or straight-chain or branched alkyl, alkenyl, alkinyl or alkoxy having up to 4 carbon atoms, and one of the substituents optionally represents hydrogen,or a salt thereof.[...]..Iadd., andA represents hydrogen or straight-chain or branched alkyl having up to 8 carbon atoms, or represents phenyl or benzyl which are optionally substituted one to three times by identical or different substituents from the series consisting of hydroxyl, nitro, halogen, cyano, carboxyl, trifluoromethyl, trifluoromethoxy, straight-chain or branched alkoxy having up to 6 carbon atoms or by a group of the formula --NR.sup.6 R.sup.7 or --SO.sub.2 R.sup.8, in whichR.sup.6 and R.sup.