Syntheses of 4-(3,5-Bisphenylmethylene-4-oxo-piperidin-1-yl)-4-oxo-but-2Z-enoic Acid Arylamides as Candidate Cytotoxic Agents
摘要:
The title compounds were designed and synthesized as candidate cytotoxic agents. They were synthesized by reacting 3,5-bisphenylmethylene-piperidin-4-one with the appropriate 3-arylcarbamoylacrylic acids. These reactions follow an unusual mechanism and deviate from the previously reported reactions on similar substrates.
Facile esterification of carboxylic acids with organophosphorus reagents
作者:V. Balasubramaniyan、V.G. Bhatia、S.B. Wagh
DOI:10.1016/s0040-4020(01)88552-5
日期:1983.1
A mixture of alkyl phosphate esters (APE) obtained from P4O10 and alkanols taken in 1:6 mole ratio is an excellent esterification reagent for several classes of carboxylicacids. This new reagent offers several advantages compared to conventional reagents.
由P 4 O 10获得的烷基磷酸酯(APE)和以1:6摩尔比获得的链烷醇的混合物是用于几类羧酸的优良酯化试剂。与常规试剂相比,这种新试剂具有多个优点。
Chemospecific Allylation and Domino Metathesis of 7-Oxanorbornenes for Skeletal and Appendage Diversity
quinazolinone and the inherent feature of spirocycle to design novel chitin synthaseinhibitors that possess mode of action different from that of the currently used antifungal agents. Among them, the spiro[thiophen-quinazolin]-one derivatives containing α, β-unsaturated carbonyl fragments had shown inhibitory activities against chitin synthase and antifungal activities. The enzymatic experiments showed that
E,E,E-1-(4-Arylamino-4-oxo-2-butenoyl)-3,5-bis(arylidene)-4-piperidones: A topographical study of some novel potent cytotoxins
作者:Amitabh Jha、Chandrani Mukherjee、Ashok K. Prasad、Virinder S. Parmar、Erik De Clercq、Jan Balzarini、James P. Stables、Elias K. Manavathu、Anuraag Shrivastav、Rajendra K. Sharma
DOI:10.1016/j.bmc.2007.05.065
日期:2007.9.1
A series of E,E,E-3,5-bis(arylidene)-1-(4-arylamino-4-oxo-2-butenoyl)-4-piperidones 4 (phenylidene) and 5 (4-nitrophenylidene) were prepared in order to explore the structural features of the N-acyl group which affects the cytotoxic potency. Evaluation toward human Molt 4/C8 and CEM T-lymphocytes revealed that many of the IC(50) figures were submicromolar and lower than melphalan. Marked inhibitory potencies toward murine leukemia L1210 cells were also noted. When evaluated against a panel of human tumor cell lines, three representative compounds in series 4 displayed selective toxicity to leukemia and colon cancer cell lines and were significantly more potent than the reference drug melphalan. Molecular modeling of representative compounds in both series 4 and the analogs, in which the configuration of the olefinic double bond was changed from E to Z (series 3), revealed that the torsion angles of the arylidene aryl rings and locations of the terminal arylaminocarbonyl groups may have contributed to the greater cytotoxic properties displayed in 3. Compounds 4c (3,4-dichlorophenylamino), d (4-methylphenylamino) and 5c (3,4-dichlorophenylamino), d (4-methylphenylamino) inhibited the activity of human N-myristoyltransferase by approximately 50% at concentrations of 50-100 mu M. The compounds in series 4 and 5 were well tolerated in a short-term toxicity study in mice. (c) 2007 Elsevier Ltd. All rights reserved.
Synthesis and characterization of Hg(II) and Zn(II) complexes based on 3-[(4-chlorophenylamido)]propenoic acid
作者:M. Z. Ali、S. Ali、S. Shahzadi
DOI:10.1134/s0036023611110027
日期:2011.11
3-[(4-Chlorophenylamido)]propenoic acid has been synthesized by reaction of maleic anhydride and 4-chloroaniline in 1:1 molar ratio in glacial acetic acid and its metal complexes have been synthesized by the reaction of 3-[(4-chlorophenylamido)]propenoic acid with HgCl2 and [Zn(CH3COO)(2)] center dot 2H(2)O in 2: 1 molar ratio, respectively. All the synthesized compounds have been characterized by the elemental analysis, IR, UV/Vis and NMR (H-1, C-13) spectroscopy. Conductance for the reported compounds has been recorded in ethanol and suggests the non-electro lytic nature of complexes. IR data of metal complexes shows that the ligand is bound to the metal via both carboxylate oxygen atoms and complexes exhibits 4-coordinated geometry in solid state. NMR (H-1, C-13) study confirms the structure of the 3-[(4-chlorophenylamido)]propenoic acid and the reported complexes.