- Synthesis, and evaluation of in vitro and in vivo anticancer activity of 14-substituted oridonin analogs: A novel and potent cell cycle arrest and apoptosis inducer through the p53-MDM2 pathway
-
A series of novel oridonin derivatives bearing various substituents on the 14-OH position were designed and synthesised. Their antitumour activity was evaluated in vitro against three human cancer cell lines (HCT116, BEL7402, and MCF7). Most tested derivatives showed improved anti-proliferative activity compared to the lead compound oridonin and the positive control drug 5-fluorouracil (5-Fu). Among them, compound C7 (IC50 = 0.16 μM) exhibited the most potent anti-proliferative activity against HCT116 cells; it was about 43- and 155-fold more efficacious than that of oridonin (IC50 = 6.84 μM) and 5-Fu (IC50 = 24.80 μM) in HCT116 cancer cells. Interestingly, the IC50 value of compound C7 in L02 normal cells was 23.6-fold higher than that in HCT116 cells; it exhibited better selective anti-proliferative activity and specificity than oridonin and 5-Fu. Furthermore, compound C7 possibly induced cell cycle arrest and apoptosis by regulating the p53-MDM2 signalling pathway. Notably, C7 displayed more significant suppression of tumour growth than oridonin in colon tumour xenograft models where the tumour growth inhibition rate was 85.82%. Therefore, compound C7 could be a potential lead compound for the development of a novel antitumour agent.
- Shen, Qing-Kun,Deng, Hao,Wang, Shi-Ben,Tian, Yu-Shun,Quan, Zhen-Shan
-
-
- Design, synthesis and structure-activity relationship studies of novel and diverse cyclooxygenase-2 inhibitors as anti-inflammatory drugs
-
Because of the pivotal role of cyclooxygenase (COX) in the inflammatory processes, non-steroidal anti-inflammatory drugs (NSAIDs) that suppress COX activities have been used clinically for the treatment of inflammatory diseases/syndromes; however, traditional NSAIDs exhibit serious side-effects such as gastrointestinal damage and hyper sensitivity owing to their COX-1 inhibition. Also, COX-2 inhibition-derived suppressive or preventive effects against initiation/proliferation/invasion/motility/recurrence/metastasis of various cancers/tumours such as colon, gastric, skin, lung, liver, pancreas, breast, prostate, cervical and ovarian cancers are significant. In this study, design, synthesis and structure-activity relationship (SAR) of various novel {2-[(2-, 3- and/or 4-substituted)-benzoyl, (bicyclic heterocycloalkanophenyl)carbonyl or cycloalkanecarbonyl]-(5- or 6-substituted)-1H-indol-3-yl}acetic acid analogues were investigated to seek and identify various chemotypes of potent and selective COX-2 inhibitors for the treatment of inflammatory diseases, resulting in the discovery of orally potent agents in the peripheral-inflammation model rats. The SARs and physicochemical properties for the analogues are described as significant findings. For graphical abstract: see Supplementary Material. (www.informahealthcare.com/enz)
- Hayashi, Shigeo,Ueno, Naomi,Murase, Akio,Takada, Junji
-
p. 846 - 867
(2015/02/19)
-
- AUTOTAXIN INHIBITORS AND USES THEREOF
-
Described herein are compounds that are inhibitors of autotaxin. Also described are pharmaceutical compositions and medicaments that include the compounds described herein, as well as methods of using such inhibitors, alone and in combination with other compounds, for treating autotaxin-dependent or autotaxin-mediated conditions or diseases.
- -
-
Page/Page column 168
(2012/03/11)
-
- Tricyclic compounds having fungicidal activity, their preparation and their use
-
Compounds of formula (I): STR1 ?wherein: R1 represents halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, cycloalkyl, or cycloalkyloxy; R2 represents hydrogen or halogen; R3 represents hydrogen, alkyl, or cycloalkyl; and the dotted line represents a single or double carbon--carbon bond!; and salts thereof have valuable fungicidal activities which make them of considerable value in agriculture and horticulture.
- -
-
-
- Novel Indole-2-carboxylates as Ligands for the Strychnine-Insensitive N-Methyl-D-aspartate-Linked Glycine Receptor
-
A series of indole-2-carboxylates were prepared and evaluated for their ability to inhibit the binding at the strychnine-insensitive glycine receptor that is associated with the NMDA-PCP-glycine receptor complex.All of the compounds were selective for the glycine site relative to other sites on the receptor macrocomplex and several of the compounds in this series were found to have submicromolar affinity for this receptor.The lead compound, 2-carboxy-6-chloro-3-indoleacetic acid (Ki = 1.6 μM vsglycine), was also found to noncompetitively inhibit the binding of MK-801, a ligand for the phencyclidine site on the receptor macrocomplex.These latter data suggest that the compound functions as an antagonist at the strychnine-insensitive glycine receptor.The structural activity relationships within this series of indole-2-carboxylates is discussed and several key pharmacophores are identified for this series of glycine ligands.In general, the most potent compounds were the C-3 acetamides, with N-propyl-2-carboxy-6-chloro-3-indoleacetamide having the highest receptor affinity.
- Gray, Nancy M.,Dappen, Michael S.,Cheng, Brian K.,Cordi, Alexis A.,Biesterfeldt, John P.,et al.
-
p. 1283 - 1292
(2007/10/02)
-
- Indoline Analogues of Idazoxan: Potent α2-Antagonists and α1-Agonists
-
The synthesis and α-adrenergic activity of a series of substituted 2-imidazolinylindolines are described.Substitution in the indoline ring generated compounds with a spectrum of adrenoceptor antagonist/agonist profiles that proved sensitive to both the nature and position of the substituent.Many of the derivatives possess greater presynaptic antagonist potency that the corresponding benzodioxan 1, dihydrobenzofuran 2, and indan 3 analogues; however, this α2-antagonism is often accompanied by α1-agonist activity.It was not possible to separate α2-antagonist from α1-agonist properties in this series.Compounds of most interest proved to be the N-ethyl 6, 5-chloro-N-methyl 18 and 5-chloro-N-ethyl 23 derivatives, all being potent α2-antagonists and α1-agonists.Substitution at the 4- and 7-position of the indoline ring generally gave compounds with nonselective agonist properties.
- Fagan, Gay P.,Chapleo, Christopher B.,Lane, Anthony C.,Myers, Malcolm,Roach, Alan G.,et al
-
p. 944 - 948
(2007/10/02)
-