Abstract:
A (−)-stereoisomer of formula (I): (formula I), wherein X is H or F; or a pharmaceutically acceptable salt or pro drug thereof, is useful as an anesthetic.
Abstract:
Carbamoyl esters inhibit cholinesterase activity and, upon hydrolysis release a pharmacologically active agent. In one embodiment, the carbamoyl ester has the following structure: wherein A is selected from the group consisting of an unsubstituted aryl, a substituted aryl, an unsubstituted heteroaryl and a substituted heteroaryl. The carbamoyl esters are employed in methods to treat an individual. The pharmacologically active agent obtained by hydrolysis of the carbamoyl esters can treat, for example, a nervous system condition, a cholinergic deficiency and conditions or diseases associated with a deficiency in a pharmacologically active agent, such as acetylcholine.
Abstract:
The present invention is concerned with compounds of formula (I) ##STR1## wherein Ar is a mono- or bicyclic aromatic group optionally containing one or two heteroatoms independently selected from nitrogen, oxygen and sulphur, said group being optionally substituted by one or more atoms or groups independently selected from halogen, nitro, amino, --NRR.sup.1 where R and R.sup.1 are independently selected from hydrogen, C.sub.1-8 alkyl and C.sub.1-8 alkanoyl, cyano, carboxyalkoxy, alkoxycarbonylalkoxy, C.sub.1-8 alkyl (including cycloalkyl and cycloalkylalkyl), C.sub.1-8 alkoxy (including cycloalkoxy and cycloalkylalkoxy), C.sub.1-8 thioalkyl, said alkyl, alkoxy and/or thioalkyl group(s) being optionally substituted by one or more halogen atoms, aryl, aryloxy, aralkyl and aralkyloxy, said aryl, aryloxy, aralkyl and/or aralkyloxy group(s) being optionally substituted by one or more atoms or groups independently selected from halogen, alkyl, alkoxy, alkanoyl, hydroxyalkyl, perfluoroalkyl, perfluoroalkoxy, carboxyalkoxy, alkoxycarbonylalkoxy, and C.sub.3-8 polyether groups containing from one to three oxygen atoms;D is --CH.sub.2 --, --NH--, or --O--;E is --N
Abstract:
The present invention provides a process for preparing urethanes and carbonates from an amine or an alcohol, carbon dioxide and a hydrocarbyl halide. The amine or alcohol is reacted with carbon dioxide in a suitable solvent system and in the presence of an amidine or guanidine base, to form the ammonium carbamate or carbonate salt which is then reacted in a polar aprotic solvent with a hydrocarbyl halide. Polymer products can also be prepared utilizing this process or utilizing the resulting urethanes and carbonates under standard polymerization conditions.
Abstract:
N-aryl(thiol)carbamates of the formula ##STR1## where X denotes hydrogen, fluorine, bromine, iodine, alkyl, alkoxy, haloalkyl, haloalkoxy, alkylthio, alkylsulfinyl or alkylsulfonyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, phenyl or benzyloxy, Y denotes hydrogen, halogen, alkyl, alkoxy, haloalkyl, haloalkoxy, alkylthio, alkylsulfinyl or alkylsulfonyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, phenyl or benzyloxy, n denotes one of the integers 1 and 2, Z denotes hydrogen, halogen or trifluoromethyl, A denotes oxygen, sulfur, sulfinyl or sulfonyl, and Q denotes oxygen or sulfur, and their use for combating unwanted plant growth.
Abstract:
The present disclosure features a strain-promoted [2+2+2] reaction that can be carried out under physiological conditions. In general, the reaction involves reacting a pi-electrophile with a low lying LUMO with a quadricyclane on a biomolecule, generating a covalently modified biomolecule. The selectivity of the reaction and its compatibility with aqueous environments provides for its application in vivo and in vitro. The reaction is compatible with modification of living cells. In certain embodiments, the pi-electrophile can comprise a molecule of interest that is desired for delivery to a quadricyclane-containing biomolecule via [2+2+2] reaction.
Abstract:
The present disclosure features a strain-promoted [2+2+2] reaction that can be carried out under physiological conditions. In general, the reaction involves reacting a pi-electrophile with a low lying LUMO with a quadricyclane on a biomolecule, generating a covalently modified biomolecule. The selectivity of the reaction and its compatibility with aqueous environments provides for its application in vivo and in vitro. The reaction is compatible with modification of living cells. In certain embodiments, the pi-electrophile can comprise a molecule of interest that is desired for delivery to a quadricyclane-containing biomolecule via [2+2+2] reaction.
Abstract:
An aspect of the present invention relates to a composition, which is a composition for a magnetic recording medium and comprises an isocyanate compound in the form of an adduct of a polyhydroxyl compound having one or more aromatic carbon rings and three or more hydroxyl groups per molecule with a polyisocyanate having two or more isocyanate groups per molecule.
Abstract:
This invention is directed to compositions and methods for the isolation and further characterization of eukaryotic, mammalian, and/or human PC-PLC. In addition, the present invention discloses methods for the synthesis of an affinity chromatography resin for the isolation and purification of biologically active proteins, including eukaryotic PC-PLC.