305-00-0Relevant academic research and scientific papers
Synthesis and evaluation of prodrugs of ketoprofen with antioxidants as gastroprotective NSAIDs
Sehajpal, Shikha,Prasad, Deo Nandan,Singh, Rajesh K.
, p. 2145 - 2150 (2018)
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 alcoholi
Synthesis, kinetic mechanism and docking studies of vanillin derivatives as inhibitors of mushroom tyrosinase
Ashraf, Zaman,Rafiq, Muhammad,Seo, Sung-Yum,Babar, Mustafeez Mujtaba,Zaidi, Najam-Us-Sahar Sadaf
, p. 5870 - 5880 (2015)
The purpose of the present study was to discover the extent of contribution to antityrosinase activity by adding hydroxy substituted benzoic acid, cinnamic acid and piperazine residues to vanillin. The study showed the transformation of vanillin into este
Novel ketoprofen–antioxidants mutual codrugs as safer nonsteroidal anti-inflammatory drugs: Synthesis, kinetic and pharmacological evaluation
Sehajpal, Shikha,Prasad, Deo Nandan,Singh, Rajesh K.
, (2019/07/03)
Ketoprofen belongs to one of the most common nonsteroidal anti-inflammatory drugs (NSAIDs) but its clinical usefulness has been restricted due to the high incidence of gastrointestinal complications. The release of reactive oxygen species (ROS) in NSAIDs
Substituted phenyl[(5-benzyl-1,3,4-oxadiazol-2-yl)sulfanyl]acetates/acetamides as alkaline phosphatase inhibitors: Synthesis, computational studies, enzyme inhibitory kinetics and DNA binding studies
Iqbal,Ashraf,Hassan, Mubashir,Abbas,Jabeen, Erum
, (2019/07/09)
Substituted phenyl[(5-benzyl-1,3,4-oxadiazol-2-yl)sulfanyl]acetates/acetamides 9a-j were synthesized as alkaline phosphatase inhibitors. 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 for their inhibitory activity against human alkaline phosphatise (ALP). It was found that compounds 9a-j exhibited good to excellent alkaline phosphatase inhibitory activity especially 9h displayed potent activity with IC50 value 0.420 ± 0.012 μM while IC50 value of standard (KH2PO4) was 2.80 μM. The enzyme inhibitory kinetics of most potent inhibitor 9h was determined by Line-weaever Burk plots showing non-competitive mode of binding with enzyme. Molecular docking studies were performed against alkaline phosphatase enzyme (1EW2) to check the binding affinity of the synthesized compounds 9a-j against target protein. The compound 9h exhibited excellent binding affinity having binding energy value (?7.90 kcal/mol) compared to other derivatives. The brine shrimp viability assay results proved that derivative 9h was non-toxic at concentration used for enzyme assay. The lead compound 9h showed LD50 106.71 μM while the standard potassium dichromate showed LD50 0.891 μM. The DNA binding interactions of the synthesized compound 9h was also determined experimentally by spectrophotometric and electrochemical methods. The compound 9h was found to bind with grooves of DNA as depicted by both UV–Vis spectroscopy and cyclic voltammetry with binding constant values 7.83 × 103 and 7.95 × 103 M?1 respectively revealing significant strength of 9h-DNA complex. As dry lab and wet lab results concise each other it was concluded that synthesized compounds, especially compound 9h may serve as lead compound to design most potent inhibitors of human ALP.
Synthesis and pharmacological evaluation of mutual prodrugs of aceclofenac with quercetin, vanillin and l-tryptophan as gastrosparing NSAIDS
Rasheed, Arun,Lathika,Raju, Y. Prasanna,Mansoor,Azeem,Balan, Nija
, p. 70 - 82 (2016/01/25)
Synthesis, physicochemical characterization and pharmacological evaluation of mutual prodrugs of aceclofenac with quercetin, vanillin and l-tryptophan have been attempted to develop novel gastrosparing NSAIDs, devoid of ulcerogenic side effects. The structures of synthesized prodrugs were confirmed by IR, 1H NMR, 13C NMR and mass spectroscopy. The hydrolysis kinetics studies were performed in simulated gastric fluid, simulated intestinal fluid and rat fecal matter. Its anti-inflammatory and ulcer index were analyzed along with estimation of biochemical parameters (GWM and Hexosamine), oxidative parameters (LPO, GSH, CAT, and SOD) and protein estimation. The results indicated that the synthesized prodrugs are chemically stable, biolabile and possesses optimum lipophilicity. They also exhibited retention of anti-inflammatory activity with reduced ulcerogenicity. The study showed that the mutual prodrugs are better in action compared to the parent drug and have fewer gastrointestinal side effects.
Synthesis of curcumin and ethylcurcumin bioconjugates as potential antitumor agents
Al-Wabli, Reem I.,AboulWafa, Omaima M.,Youssef, Khairia M.
experimental part, p. 874 - 890 (2012/08/13)
Some new curcumin and ethylcurcumin bioconjugates with various functionalities supported on the curcumin skeleton were synthesized and evaluated for antitumor activity. Most of the newly synthesized compounds are more active than curcumin and ethyl curcum
Design, synthesis and evaluation of diclofenac-antioxidant mutual prodrugs as safer NSAIDs
Manon, Benu,Sharma, Pritam D.
experimental part, p. 1279 - 1287 (2010/02/27)
Diclofenac has been conjugated with different antioxidants having antiulcerogenic activity with the objective of obtaining diclofenac-antioxidant mutual prodrugs as safer NSAIDs devoid of ulcerogenic side-effects. The synthesized derivatives are screened
Preparative synthesis of vanillin and vanillal alkanoates
Dikusar,Vyglazov,Moiseichuk,Zhukovskaya,Kozlov
, p. 120 - 124 (2007/10/03)
Procedures for preparing vanillin and vanillal alkanoates were developed.
Vanillin esters of aliphatic acids in the synthesis of 4,7-phenanthroline derivatives
Kozlov,Gusak,Tereshko,Dikusar
, p. 705 - 710 (2007/10/03)
Condensation of vanillin esters of aliphatic acids with 6-aminoquinoline and cyclic c-diketones (1,3-cyclohexanedione and dimedone) afforded new 2-methoxy-4-(11-oxo-7,8,9,10,11,12-hexahydrobenzo[b][4,7]phenanthrolin-12-yl) phenyl esters of carboxylic acids.
