Abstract:
Methods and compositions are disclosed utilizing the optically pure S(-) isomer of nitrendipine. This compound is a potent drug for the treament of hypertension while avoiding the concomitant liability of adverse effects associated with the administration of the racemic mixture of nitrendipine. The S(-) isomer of nitrendipine is also useful for the treatment of angina and such other conditions as may be related to the activity of S(-) nitrendipine as a calcium channel antagonist without the concomitant liability of adverse effects associated with the racemic mixture of nitrendipine.
Abstract:
Methods and compositions are disclosed utilizing the optically pure (+) isomer of zopiclone. This compound is a potent drug for the treatment of sleep disorders, such as insomnia, and convulsive disorders, such as epilepsy. Similarly, these novel compositions and methods are useful for the treatment of sleep disorders and convulsive disorders while avoiding the concomitant liability of adverse effects associated with the racemic mixture of zopiclone. The optically pure (+) isomer of zopiclone is also useful for treating disorders that are affected by the binding of agonists to central nervous system or peripheral benzodiazepine receptors. Also described are methods and compositions for treating disorders that are affected by binding of agonists to central nervous system or peripheral benzodiazepine receptors while avoiding the adverse effects associated with the administration of the racemic mixture of zopiclone.
Abstract:
Methods and compositions are disclosed utilizing the optically pure R(+) isomer of ondansetron. This compound is a potent drug for the treatment of nausea and vomiting associated with chemotherapy and radiation therapy, while avoiding the concomitant liability of adverse effects associated with the racemic mixture of ondansetron. The R(+) isomer of ondansetron is also useful for the treatment of behavioral disorders such as mood anxiety and schizophrenia, and such other conditions as may be related to R(+) ondansetron's activity as a competitive antagonist of serotonin receptor subtype 5-HT3 such as disorders of gastrointestinal motility, depression, migraine, and as an aid for alcohol withdrawal, nicotine withdrawal, and drug (benzodiazepine et al.) withdrawal, without the concomitant liability of adverse effects associated with the racemic mixture of ondansetron. Furthermore, the R(+) isomer of ondansetron is also useful for the treatment of cognitive disorders such as dementia or age-associated memory impairment, while avoiding the concomitant liability of adverse effects associated with the racemic mixture of ondansetron.
Abstract:
This invention relates to lectin affinity membranes and methods for carrying out affinity separations of glycosylated proteins using them. The method utilizes a membrane-bound lectin ligand first to capture and separate a glycosylated protein from a fluid mixture and subsequently to release said protein in purified form. The present affinity membrane methods recover high-purity glycosylated proteins. The invention has particular relevance to the recovery and purification of glycosylated proteins from mixtures of biological origin.
Abstract:
Optically pure S(-) atenolol, which is substantially free of the R(+) enantiomer, is a potent beta-blocker for controlling heartbeat, relieving the symptoms of angina pectoris and reducing blood pressure in individuals. A method is disclosed utilizing the optically pure S(-) enantiomer of atenolol for treating cardiovascular disorders while reducing undesirable side effects associated with beta-blockers.
Abstract:
This invention relates to novel compositions of matter and their methods of preparation, which compositions are esters with enhanced water solubility, for use in aqueous enzymatic resolution reactions of racemic mixtures of these esters. The importance of the production of the separate chiral isomers of the racemic mixtures resides in the isolation of the isomers which frequently have different biological activities. Of particular significance regarding the water soluble esters of this invention is that they are derivatized with groups which enhance their aqueous solubility and their reactivity with this invention's novel enzymatic resolving methods which are mediated in an aqueous environment.
Abstract:
Low-ethanol wines and other alcoholic beverages are produced by treating ordinary alcoholic beverages with novel membrane extraction methods. Semipermeable membranes and extraction fluids comprised either of a non-toxic, water-immiscible organic solvent or an aqueous solution of a low-molecular-weight but membrane-impermeable solute are used under mild conditions to selectively extract ethanol from alcoholic beverages, while leaving substantially intact the complement of other organic constituents that contribute to the color, aroma, and taste of the beverage. The methods disclosed may be adapted to continuous processing of alcohol-containing beverages, in which an ethanol-rich product is continuously recovered from the organic or aqueous extraction fluid and the latter is continuously regenerated and subsequently recycled to the membrane extraction unit.
Abstract:
A method for treating urinary incontinence, such as incontinence resulting from bladder detrusor muscle instability, using enantiomerically enriched (S)-trihexyphenidyl. The method comprises administering a therapeutically effective amount of enantiomerically enriched (S)-trihexyphenidyl, or a pharmaceutically acceptable salt thereof, substantially free of the (R)-trihexyphenidyl enantiomer. Pharmaceutical compositions for the treatment of urinary incontinence comprising enantiomerically enriched (S)-trihexyphenidyl, or a pharmaceutically acceptable salt thereof, and an acceptable carrier are also disclosed.
Abstract:
A method for treating urinary incontinence, such as incontinence resulting from bladder detrusor muscle instability, using enantiomerically enriched (S,S)-glycopyrrolate. The method comprises administering a therapeutically effective amount of enantiomerically enriched (S,S)-glycopyrrolate, or a pharmaceutically acceptable salt thereof, substantially free of the (R,R)-glycopyrrolate enantiomer. Pharmaceutical compositions for the treatment of urinary incontinence comprising enantiomerically enriched (S,S)-glycopyrrolate, or a pharmaceutically acceptable salt thereof, and an acceptable carrier are also disclosed.