摘要:
A lubricant composition for use alone or in a lubricating base, comprising a finely divided carbonate of Group IIA metal and a halogenated organic lubricant.
摘要:
Novel 3,20-dioxo-7.alpha.-halogeno-1,4-pregnadienes are described and their use as anti-inflammatory agents. Preferred are 7.alpha.-bromo- and 7.alpha.-chloro- derivatives, particularly 7.alpha.-bromo- and 7.alpha.-chloro-1,4-pregnadienes-11.beta.,17.alpha.,21-triol-3,20-dione 17,21-dihydrocarboncarboxylates, the 16-methyl and 16-methylene derivatives thereof being particularly valuable as topical anti-inflammatory agents.
摘要:
21-Halogeno-17.alpha.-acyloxy-20-keto-4-pregnenes having physiological properties are prepared by the reaction of a 17.alpha.,21-dihydroxy-20-keto-4-pregnene 17.alpha.,21-orthoester with a halide reagent selected from the group consisting of triarylsilyl halides and tri-lower alkylsilyl halides in an organic solvent, said halide being chloride or bromide. Preferred reagents are tri-lower alkylsilyl halides, particularly trimethylsilyl chloride.
摘要:
21-Desoxy-17.alpha.-acyloxy-20-keto-4-pregnenes having physiological properties are prepared by the reaction of a 17.alpha.,21-dihydroxy-20-keto-4-pregnene 17.alpha.,21-orthoester or a 21-iodo-21-desoxy-17.alpha.-acyloxy-20-keto-4-pregnene with an iodide reagent selected from the group consisting of triphenylsilyl iodide, tri-lower alkylsilyl iodide and triphenylmethyl iodide. When said 17.alpha.,21-dihydroxy-20-keto-4-pregnene 17.alpha.,21-orthoester is reacted with less than two molar equivalents of a tri-lower alkylsilyl iodide reagent there is also formed a 21-iodo-21-desoxy-17-.alpha. -acyloxy-20-keto-4-pregnene, a useful intermediate, which, upon reaction with additional iodide reagent, is converted to the corresponding 21-desoxy-17.alpha.-acyloxy-20-keto-4-pregnene.
摘要:
(17R)-Spiro-[androstane-17,1'-cyclobutan]-2'-ones are prepared by the reaction of a 17-oxo androstane, wherein all other ketones are blocked, with a cyclopropylarylsulfide or with a cyclopropylarylsulfonium salt having a non-nucleophilic anion, in an organic solvent together with a strong base, followed by reaction in situ of the intermediate thereby formed with aqueous acid or water.Some (17R)-spiro-[androstan-17,1'-cyclobutan]-2'-ones are useful as intermediates in preparing (17R)-spiro-[3-oxo-4-androstene-17,1'-cyclobutan]-2'-ones which are aldosterone antagonists. Additionally, (17R)-spiro-[androstane-17,1'-cyclobutan]-2'-ones are useful as intermediates in preparing known 17.alpha.-pregnane-21,17.beta.-carbolactones, valuable aldosterone blocking agents.
摘要:
This invention relates to a novel class of compounds which are cysteine protease inhibitors, including but not limited to, inhibitors of cathepsins K, L, S and B. These compounds are useful for treating diseases in which inhibition of bone resorption is indicated, such as osteoporosis.
摘要:
An interface module is operatively coupled to a Fieldbus process control network and a Modbus process control network to facilitate the exchange of process control information between the networks. The interface module stores a register map database in which the process control parameters of the function blocks in the field devices of the Fieldbus process control network are mapped to register numbers of the Modbus process control network. Once the Fieldbus process control parameters are mapped to the Modbus registers, the interface module is adapted to transmit request messages on the Fieldbus process control network to the Fieldbus field devices for the current values of the process control parameters, receive response messages from the Fieldbus field devices, and store the current values of the process control parameters in the register map database.
摘要:
An improved spa control system is disclosed. The invention describes a spa control system which calculates the time required to heat the water in the spa system to a desired temperature. From that information, the heating rate of the spa system can be determined, and the heating element of the spa system can be activated at the proper time to raise the temperature of the water to a selected temperature by a desired time. The spa system also monitors information which might show errors in the operation of the spa system such as a blockage in the flow of water over the heating element in the spa system.
摘要:
Di-N-substituted piperazine or 1,4 di-substituted piperadine compounds in accordance with formula I (including all isomers, salts, esters, and solvates) wherein R, R1, R2, R3, R4, R21, R27, R28, X, Y, and Z are as defined herein are muscarinic antagonists useful for treating cognitive disorders such as Alzheimer's disease. Pharmaceutical compositions and methods of preparation are also disclosed. Also disclosed are synergistic combinations of compounds of the above formula or other compounds capable of enhancing acetylcholine release with acetylcholinesterase inhibitors.