The present invention discloses compounds that are highly isozyme selective protein kinase C beta-1 and beta-2 isozyme inhibitors. Accordingly, the present invention provides a method of selectively inhibiting protein kinase C isozymes beta-1, and beta-2. As isozyme selective inhibitors of beta-1 and beta-2, the compounds are therapeutically useful in treating conditions associated with diabetes mellitus and its complications, as well as other disease states associated with an elevation of the beta-1 and beta-2 isozyme.
Temperature-responsive polymer compound and process for producing the same
申请人:Akiyama Yoshikatsu
公开号:US20050224415A1
公开(公告)日:2005-10-13
A temperature-responsive polymer and polymer material which has ester bond(s) and/or acid amide bond(s) respectively at one or more sites in the side chain and can be arbitrarily controlled by varying the side chain is provided. The process for production thereof and the use thereof are also provided.
Aminooxy-containing linker compounds for formation of stably-linked
申请人:CellPro, Incorporated
公开号:US05880270A1
公开(公告)日:1999-03-09
Linker compounds for formation of stably-linked conjugates are disclosed. Such linker compounds are aminooxy-containing linker compounds useful in forming conjugates having stable oxime linkages. The stably-linked conjugates have utility in a variety of immunodiagnostic and separation techniques.
Fragmentation reactions of some aliphatic esters in the NCl(F−) and NCl(NH2−) mass spectra
作者:Hans-Fr. Grützmacher、Barbara Grotemeyer
DOI:10.1002/oms.1210190305
日期:1984.3
AbstractThe NCI(F−) and NCI(NH2−) mass spectra of a series of aliphatic acetates and of methyl and ethyl trimethylacetate have been obtained. The formation of fluoroenolate ions CH2COF− and of carboxamide anions RCONH− (R CH3))CH3C). respectively, is observed besides formation of [M H]− ions and carboxylate ions RCOO− (R CH3, (CH3)3C). The relative intensities of the different anions depend on the structure of the ester molecules and on the primary reactant anions. Usually, the NCI(NH2−) spectra of the acetates are dominated by [M H]− ions ([MD]− ions in the case of trideuteroacetates) fragmenting unimolecularly by elimination of an alcohol. The carboxylate ions are important fragments, too, but carboxamide ions are only observed with large intensities in the NCI(NH2− spectra of the trimethylacetates. The NCI(F−) spectra show much larger intensities of carboxylate ions and fluoroenolate ions. The mechanisms of the fragmentation reactions are discussed. The results indicate that most or even all of the fragment ions in the NCI(F− mass spectra of aliphatic esters are formed by addition‐elimination reactions via a tetrahedral intermediate, while competition between direct proton abstraction and addition‐elimination reactions occurs in the NCI(NH2−) mass spectra because of the higher basicity of NH2− resulting in an early transition state for direct proton abstraction.
Hydrolyse basique et decarboxylation d'esters allophaniques en milieu mixte acetonitrile-eau : catalyse bifonctionnelle par une entite formee entre base et solvant