[EN] A PRODRUG COMPRISING BETA-KETO CARBOXYLIC ACID, BETA-KETO CARBOXYLIC ACID SALT OR BETA-KETO CARBOXYLIC ACID ESTER FOR DRUG DELIVERY [FR] PROMÉDICAMENT COMPRENANT UN ACIDE BÊTA-CÉTO CARBOXYLIQUE, UN SEL D'ACIDE BÊTA-CÉTO CARBOXYLIQUE OU UN ESTER D'ACIDE BÊTA-CÉTO CARBOXYLIQUE POUR L'ADMINISTRATION DE MÉDICAMENT
[EN] A PRODRUG COMPRISING BETA-KETO CARBOXYLIC ACID, BETA-KETO CARBOXYLIC ACID SALT OR BETA-KETO CARBOXYLIC ACID ESTER FOR DRUG DELIVERY [FR] PROMÉDICAMENT COMPRENANT UN ACIDE BÊTA-CÉTO CARBOXYLIQUE, UN SEL D'ACIDE BÊTA-CÉTO CARBOXYLIQUE OU UN ESTER D'ACIDE BÊTA-CÉTO CARBOXYLIQUE POUR L'ADMINISTRATION DE MÉDICAMENT
Nucleophilic attack on 2,1-benzisothiazolium salts
作者:David M. McKinnon、K. Ann Duncan、Lesley M. Millar
DOI:10.1139/v82-066
日期:1982.2.15
2,1-Benzisothiazolium salts react with several stabilized carbanions to give products that are derived by attack at the carbon atom of the heterocyclic ring.
1-苯并噻唑盐与几种稳定的碳负离子反应,产生的产物是通过在杂环环的碳原子处进行攻击而得到的。
PRODRUG COMPRISING BETA-KETO CARBOXYLIC ACID, BETA-KETO CARBOXYLIC ACID SALT OR BETA-KETO CARBOXYLIC ACID ESTER FOR DRUG DELIVERY
申请人:Andersson Martin
公开号:US20120065179A1
公开(公告)日:2012-03-15
There is provided a prodrug of a pharmaceutically active agent, such prodrug comprising a beta-keto carboxylic acid, a beta-keto carboxylic acid salt or a beta-keto carboxylic acid ester functional group, a pharmaceutical composition comprising the prodrug, and to the use of the prodrug or composition for treatment of a mammalian subject suffering from a condition which can be cured or alleviated by administration of the pharmaceutically active agent. There is further provided a method of inhibiting decarboxylation of a compound comprising a beta-keto carboxylic acid or a salt thereof with a monovalent cation, characterized in that a dry salt of the beta-keto carboxylic acid with a divalent or polyvalent cation is prepared.
There is provided with a silver ink composition which is formed by blending one or more kinds of silver β-ketocarboxylates selected from the group consisting of silver isobutyrylacetate, silver benzoylacetate, silver propionylacetate, silver acetoacetate, silver α-methylacetoacetate, and silver α-ethylacetoacetate, and an aliphatic primary or secondary amine having 1 to 10 carbon atoms, and a substrate with a surface on which a metallic silver layer which is formed by heating the silver ink composition is provided. According to the invention, it is possible to obtain a silver ink composition suitable for forming a metallic silver layer which has superior glossiness and specularity, and a substrate with a surface on which a metallic silver layer is formed using the silver ink composition.
There is provided with a silver ink composition which is formed by blending one or more kinds of silver β-ketocarboxylates selected from the group consisting of silver isobutyrylacetate, silver benzoylacetate, silver propionylacetate, silver acetoacetate, silver α-methylacetoacetate, and silver α-ethylacetoacetate, and an aliphatic primary or secondary amine having 1 to 10 carbon atoms, and a substrate with a surface on which a metallic silver layer which is formed by heating the silver ink composition is provided. According to the invention, it is possible to obtain a silver ink composition suitable for forming a metallic silver layer which has superior glossiness and specularity, and a substrate with a surface on which a metallic silver layer is formed using the silver ink composition.
Utilisation of 1,3-dialkylimidazolium-2-carboxylates as CO2-carriers in the presence of Na+ and K+: application in the synthesis of carboxylates, monomethylcarbonate anions and halogen-free ionic liquids
作者:Immacolata Tommasi、Fabiana Sorrentino
DOI:10.1016/j.tetlet.2005.01.106
日期:2005.3
1,3-Dialkylimidazolium-2-carboxylate compounds have recently been fully characterised. Here we describe the utilisation of 1,3-dimethyl (1a) and 1-butyl-3-methyl-imidazolium-2-carboxylate (1b) in a carboxylation reaction with transfer of the CO2 moiety to benzoylacetone and methanol for the synthesis, in high yield, of benzoylacetate and monoalkylcarbonate anions, respectively. Conversely, when compounds 1a and b are reacted with carbonylic substrates lacking C-H active bonds, a product resulting from nucleophilic attack of the 1,3-dialkylimidazol-2-ylidene species on the carbonyl moiety is obtained. The reported reactions can find applications in organic synthesis and in the synthesis of halogen-free ionic liquids. (C) 2005 Elsevier Ltd. All rights reserved.