Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.
1088.1±65.0 °C at 760 mmHg
HS Code Reference
Personal Projective Equipment
For Reference Standard and R&D, Not for Human Use Directly.
provides coniferyl ferulate(CAS#:53171-28-1) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of coniferyl ferulate are included as well.>> amp version: coniferyl ferulate
Curcumin and its derivatives generally display favorable cytotoxic activities against a number of cancer cell types. We focus our rational antineoplastic drug design program on curcumin analogues containing the 1,5-diaryl-3-oxo-1,4-pentadienyl pharmacophore. Favorable outcomes from pharmacological screens of this series demanded further pharmacokinetic evaluations to determine their suitability as effective compounds in vivo. To allow such evaluations and to provide a general, sensitive, rapid and simple method for the analysis of compounds containing the 1,5-diaryl-3-oxo-pentadienyl scaffold, we developed an HPLC method with ultraviolet detection for their detection in various biological matrices of a relevant preclinical species, i.e. the rat. Our HPLC method is specific for the analysis of many members in this series in rat blood, plasma, serum and hepatic microsomes following liquid-liquid extraction with TBME (1:30, v/v). The assay procedure involves chromatographic separation on a Zorbax-Eclipse C-18 column under isocratic conditions with the mobile phase consisting of acetonitrile and ammonium acetate buffer (pH 5.0, 10 mM) in different ratios depending upon the compound. The method was validated for NC 2083 in rat serum and rat liver microsomes, a potential lead compound, to demonstrate its applicability. The standard curve was linear (r2 ≥ 0.997) from 50 to 5000 ng/mL. Intra- and inter-day precision and accuracy of the method were within USFDA specified limits. The stability of NC 2083 was established in an auto-injector, on bench-top, during freeze-thaw cycles and long-term stability at ?80 °C for 40 days. The method is suitable for a number of compounds containing the 1,5-diaryl-3-oxo-pentadienyl scaffold with divergent log P values with only minor adjustments in the buffer to acetonitrile ratio of the mobile phase.
Curcumin analogues, HPLC, Microsomal stability, Piperidones, Rat biomatrices, Validation
A general HPLC-UV method for the quantitative determination of curcumin analogues containing the 1,5-diaryl-3-oxo-1,4-pentadienyl pharmacophore in rat biomatrices
Ravi Shankar Prasad Singh, Umashankar Das, Jonathan R. Dimmock, and Jane Alcorn*
2012 Mar 23.
A series of 3,5-bis(benzylidene)piperidin-4-ones 1, 1-acryloyl-3,5-bis(benzylidene)piperidin-4-ones 2 and adducts of 2 with sodium 2-mercaptoethanesulfonate (mesna), namely series 3, were prepared as candidate cytotoxic agents. These compounds were examined against neoplastic HSC-2, HSC-4 and HL-60 cells as well as HGF, HPC and HPLF normal cell lines and many of the compounds displayed selective toxicity for malignant cells. The CC50 values of the analogs in series 2 towards the cancer cell lines were mainly submicromolar. The relative potencies, selectivity and log P values were in the order of 2 > 1 > 3. The sulfonic acid group of a representative compound in series 3 was replaced by a thiol function to produce 4 leading to substantial increases in cytotoxic potencies and hydrophobicity indicating that the presence of a hydrophilic sulfonic acid group was disadvantageous in terms of potency. Molecular modeling suggested that the superior cytotoxicity of various members of series 1-3 over an acyclic analog 5 may have been due to the greater torsion angles θ1 and θ2 created between the arylidene aryl rings and the adjacent olefinic groups in series 1-3.
Piperidin-4-ones, Enones, Sodium 2-mercaptoethanesulfonate, Mesna, Cytotoxicity, Molecular modeling, X-ray crystallography, Selective cytotoxicity
Cytotoxic 3,5-bis(benzylidene)piperidin-4-ones and N-acyl analogs displaying selective toxicity for malignant cells
Hari N. Pati,a Umashankar Das,a J. Wilson Quail,b Masami Kawase,c Hiroshi Sakagami,d and Jonathan R. Dimmocka,*
2012 Feb 9.
A series of 2-(3-aryl-1-oxo-2-propenyl)-3-methylquinoxaline-1,4-dioxides 1a-l and 2-acetyl-3-methyl-quinoxaline-1,4-dioxide 2 were evaluated against Mycobacterium tuberculosis H37Rv. With the exception of the 4-nitro analog 1k, significant antitubercular potencies were observed in series 1 and 2 which have IC50 values in the range of 1-23 μM. Negative correlations were noted between the IC50 values of 1a-j, l towards M. tuberculosis and both the σ and π constants of the substituents in the benzylidene aryl ring. In particular, 1h emerged as a lead compound having IC50 and IC90 figures of 1.03 μM and 1.53 μM, respectively. This molecule affected respiration in rat liver mitochondria which is likely one way that 1h and the bioactive analogs exert their antitubercular properties. The quinoxaline 2, which lacks an α,β-unsaturated group, has no effect on mitochondrial respiration using concentrations which inhibit the growth of M. tuberculosis.
Antitubercular, Quinoxalines, Structure-activity relationships, Drug design, Dual agents, Mitochondria
E-2-[3-(3,4-Dichlorophenyl)-1-oxo-2-propenyl]-3-methylquinoxaline-1,4-dioxide: A lead antitubercular agent which alters mitochondrial respiration in rat liver
Umashankar Das,* Swagatika Das, Brian Bandy, Dennis K.J. Gorecki, and Jonathan R. Dimmock*
2012 Feb 9.