Synthesis and Evaluation of Prodrugs of Ketoprofen with Antioxidants as Gastroprotective NSAIDs
作者:Shikha Sehajpal、Deo Nandan Prasad、Rajesh K. Singh
DOI:10.14233/ajchem.2018.21495
日期:——
Ketoprofen-antioxidant mutual prodrugs were synthesized to reduce the gastrointestinal effects associated with ketoprofen. For reducing the gastrointestinal toxicity, the free carboxylic group (–COOH) was temporarily masked by esterification with alcoholic/phenolic –OH of natural antioxidants thymol, guaiacol, menthol and vanillin. In order to obtain the derivatives with improved in vivo lability, the double ester prodrugs i.e. ketoprofen-antioxidant through the glycolic acid spacer (-CH2COO-) have been synthesized. These mutual prodrugs were evaluated for their anti-inflammatory, analgesic and antiulcer properties. The results indicate that there is merit to extend the therapeutic utility of this potential NSAID by developing the ketoprofen-antioxidant mutual prodrugs as gastroprotective NSAIDs.
Novel ketoprofen–antioxidants mutual codrugs as safer nonsteroidal anti‐inflammatory drugs: Synthesis, kinetic and pharmacological evaluation
作者:Shikha Sehajpal、Deo Nandan Prasad、Rajesh K. Singh
DOI:10.1002/ardp.201800339
日期:2019.7
the double ester codrugs, that is, ketoprofen–antioxidant through the glycolic acid spacer (–CH2COO; IIIa–h), have also been designed and synthesized. The synthesized codrugs were characterized by IR, 1H NMR, 13C NMR, mass spectroscopy and elemental analysis. The in vitrohydrolysis studies showed the lowest hydrolysis (highest stability) in acidic pH 1.2, whereas moderate hydrolysis was seen at pH
tates/acetamides 9a-j were synthesized as alkaline phosphataseinhibitors. Phenyl acetic acid 1 through a series of reactions was converted into 5-benzyl-1,3,4-oxadiazole-2-thione 4. The intermediate oxadiazole 4 was then reacted with chloroacetyl derivatives of phenols 6a-f and anilines derivatives 8a-d to afford the title oxadiazole derivatives 9a-j. All of the title compounds 9a-j were evaluated
[EN] QUATERNARY AMINE COMPOUNDS WITH ISOPROPYLMETHYLPHENOL ESTER MOIETIES AS ANTIVIRALS, ANTIBACTERIALS AND ANTIMYCOTICS<br/>[FR] COMPOSÉS D'AMINE QUATERNAIRE AVEC DES FRACTIONS ESTER D'ISOPROPYLMÉTHYLPHÉNOL EN TANT QU'ANTIVIRAUX, ANTIBACTÉRIENS ET ANTIMYCOSIQUES
申请人:ALECTRONA PTE LTD
公开号:WO2020212901A1
公开(公告)日:2020-10-22
Disclosed are compounds having the following formula (I): Formula (I) wherein R is an alkylene chain having between 8 and 20 carbon atoms, and A is one or more anions having a total charge of -2, or R is a quaternary amine having the following formula (Ia): Formula (Ia) wherein Ra and Rb are each an alkylene chain having between 8 and 20 carbon atoms, and A is one or more anions having a total charge of -3; R1, R2, R3, R4, R5 and R6 are each independently selected from C1-10 alkyl and H; E has the following Formula (lb), wherein the ester oxygen is bonded to the aromatic ring of each E at the same position, the position being position 2 or 3; and wherein RE is H or a halide.
[EN] COMPOUNDS AND COMPOSITIONS<br/>[FR] COMPOSÉS ET COMPOSITIONS
申请人:EPIONE RES AND DEVELOPMENT INSTITUTE LTD
公开号:WO2018132066A1
公开(公告)日:2018-07-19
Disclosed are compounds having the following formula: (I) wherein R is an alkane chain having between 8 and 20 carbon atoms, and A is one or more anions having a total charge of -2; or R is a quaternary amine having the following formula: (la) wherein Ra and Rb are each an alkane chain having between 8 and 20 carbon atoms, and A is one or more anions having a total charge of -3.
揭示了具有以下化学式的化合物:(I) 其中 R 是具有 8 到 20 个碳原子的烷基链,A 是一个或多个总电荷为 -2 的阴离子;或者 R 是具有以下化学式的季铵盐:(Ia) 其中 Ra 和 Rb 分别是具有 8 到 20 个碳原子的烷基链,A 是一个或多个总电荷为 -3 的阴离子。