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1.
The bromodomain and extraterminal (BET) family of proteins play a crucial role in promoting gene expression of critical oncogenes. Novel BET bromodomain inhibitors with excellent potency, drug metabolism and pharmacokinetics (DMPK) properties were in strong need for development. We reported a series of potential BET inhibitors through incorporation of imidazole into pyridine scaffold. Among them, a novel BET inhibitor with 7-methylimidazo[1,5-a]pyrazin-8(7H)-one core, compound 28, was considered to be the most promising for in-depth study. Compound 28 exhibited excellent BRD4-inhibitory activity with IC50 value of 33 nM and anti-proliferation potency with IC50 value of 110 nM in HL-60 (human promyelocytic leukemia) cancer cell lines. Western Blot indicated that compound 28 can effectively trigger apoptosis in BxPc3 cells by modulating the intrinsic apoptotic pathway. In conclusion, these results suggested that compound 28 has merely potential for leukemia treatment. 相似文献
2.
Ya-Hui Ding Hong-Xia Fan Jing Long Quan Zhang Yue Chen 《Bioorganic & medicinal chemistry letters》2013,23(22):6087-6092
A series of guaianolide-type sesquiterpene lactones derivatives with arylation of α-methylene-γ-lactone moiety was synthesized using Heck reactions, and was evaluated for their activities against acute myelogenous leukemia (AML) cell line HL-60 and doxorubicin-resistant cell line HL-60/A. Although all compounds were significantly less active against HL-60 than the parent molecules, surprisingly, compounds 3a, 4c–4e, 5e, and 8d exhibited high potency against doxorubicin-resistant cell line HL-60/A (IC50 = 6.2–19 μM), and their activities against HL-60/A were comparable to that of their parent molecules. In view of their novel activities against HL-60/A, compound 5e with inhibitory activity against HL-60/A (IC50 = 6.2 ± 0.5 μM) was selected for study its preliminary mechanism. The result reveals that compound 5e can obviously induce apoptosis. 相似文献
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4.
Anran Song Jianbin Zhang Yang Ge Changyuan Wang Qiang Meng Zeyao Tang Jinyong Peng Kexin Liu Yanxia Li Xiaodong Ma 《Bioorganic & medicinal chemistry》2017,25(10):2724-2729
With the aim to overcome the drug resistance induced by the EGFR T790M mutation (EGFRT790M), herein, a family of diphenylpyrimidine derivatives (Sty-DPPYs) bearing a C-2 (E)-4-(styryl)aniline functionality were designed and synthesized as potential EGFRT790M inhibitors. Among them, the compound 10e displayed strong potency against the EGFRT790M enzyme, with the IC50 of 11.0 nM. Compound 10e also showed a higher SI value (SI = 49.0) than rociletinib (SI = 21.4), indicating its less side effect. In addition, compound 10e could effectively inhibit the proliferation of H1975 cells harboring the EGFRT790M mutation, within the concentration of 2.91 μM. Significantly, compound 10e has low toxicity against the normal HBE cell (IC50 = 22.48 μM). This work provided new insights into the discovery of potent and selective inhibitor against EGFRT790M over wild-type (EGFRWT). 相似文献
5.
Ping Zhou Linsheng Huang Jie Zhou Bin Jiang Yanmei Zhao Xuehua Deng Qin Zhao Fei Li 《Bioorganic & medicinal chemistry letters》2017,27(17):4185-4189
A series of novel 4(1H)-quinolone derivatives was synthesized and evaluated for antiproliferative activity in vitro. The results showed that these compounds exhibited more potent antiproliferative effect against a panel of human tumor cell lines than the lead compound 7-chloro-4(1H)-quinolone 1. Compound 7e was found to be the most potent antiproliferative agent and to exhibit selective cytotoxic activity against HepG2 cell lines with IC50 value lower than 1.0 μM. Annexin V/FITC-PI assay showed that compound 7e induced apoptosis in HepG2 cells with a dose-dependent manner. Western blotting analysis indicated that compound 7e induced cell cycle arrest in G2/M phase by p53-depedent pathway. 相似文献
6.
Xin-Hua Liu Hui-Feng Liu Xu Shen Bao-An Song Pinaki S. Bhadury Hai-Liang Zhu Jin-Xing Liu Xing-Bao Qi 《Bioorganic & medicinal chemistry letters》2010,20(14):4163-4167
A series of novel 2-chloro-pyridine derivatives containing flavone, chrome or dihydropyrazole moieties as potential telomerase inhibitors were synthesized. The bioassay tests showed that compounds 6e and 6f exhibited some effect against gastric cancer cell SGC-7901 with IC50 values of 22.28 ± 6.26 and 18.45 ± 2.79 μg/mL, respectively. All title compounds were assayed for telomerase inhibition by a modified TRAP assay, the results showed that compound 6e can strongly inhibit telomerase with IC50 value of 0.8 ± 0.07 μM. Docking simulation was performed to position compound 6e into the active site of telomerase (3DU6) to determine the probable binding model. 相似文献
7.
Kyungik Lee Jongwoo Kim Ki-Woong Jeong Ki Won Lee Yeonjoo Lee Ji Yeon Song Maeng Sup Kim Gwan Sun Lee Yangmee Kim 《Bioorganic & medicinal chemistry》2009,17(8):3152-3161
Src is an important target in multiple processes associated with tumor growth and development, including proliferation, neovascularization, and metastasis. In this study, hit identification was performed by virtual screening of commercial and in-house compound libraries. Docking studies for the hits were performed, and scoring functions were used to evaluate the docking results and to rank ligand-binding affinities. Subsequently, hit optimization for potent and selective candidate Src inhibitors was performed through focused library design and docking analyses. Consequently, we report that a novel compound ‘43’ with an IC50 value of 89 nM, representing (S)-N-(4-(5-chlorobenzo[d][1,3]dioxol-4-ylamino)-7-(2-methoxyethoxy)quinazolin-6-yl)pyrrolidine-2-carboxamide, is highly selective for Src in comparison to EGFR (IC50 ratio > 80-fold) and VEGFR-2 (IC50 ratio > 110-fold). Compound 43 exerted anti-proliferative effects on Src-expressing PC3 human prostate cancer and A431 human epidermoid carcinoma cells, with calculated IC50 values of 1.52 and 0.78 μM, respectively. Moreover, compound 43 (0.1 μM) suppressed the phosphorylation of extracellular signal-regulated kinases and p90 ribosomal S6 kinase, downstream molecules of Src, in a time-dependent manner, in both PC3 and A431 cell lines. The docking structure of compound 43 with Src disclosed that the chlorobenzodioxole moiety and pyrrolidine ring of C-6 quinazoline appeared to fit tightly into the hydrophobic pocket of Src. Additionally, the pyrrolidine NH forms a hydrogen bond with the carboxyl group of Asp348. These results confirm the successful application of virtual screening studies in the lead discovery process, and suggest that our novel compound 43 can be an effective Src inhibitor candidate for further lead optimization. 相似文献
8.
A series of N-substituted amide linked triazolyl β-d-glucopyranoside derivatives (4a-l) were synthesized and their in vitro inhibitory activity against yeast α-glucosidase enzyme [EC.3.2.1.20] was assessed. Compounds 4e (IC50 = 156.06 μM), 4f (IC50 = 147.94 μM), 4k (IC50 = 127.71 μM) and 4l (IC50 = 121.33 μM) were identified as the most potent inhibitors for α-glucosidase as compared to acarbose (IC50 = 130.98 μM) under the same in vitro experimental conditions. Kinetic study showed that both 4e and 4f inhibit the enzyme in a competitive manner with p-nitrophenyl α-d-glucopyranoside as substrate. Molecular docking studies of 4e, 4f, 4k and 4l were also carried out using homology model of α-glucosidase to find out the binding modes responsible for the inhibitory activity. This study revealed that the binding affinity of compounds 4e, 4f, 4k and 4l for α-glucosidase were −8.2, −8.6, −8.3 and −8.5 kcal/mol respectively, compared to that of acarbose (−8.9 kcal/mol). The results suggest that the N-substituted amide linked triazole glycoconjugates can reasonably mimic the substrates for the yeast α-glucosidase. 相似文献
9.
Ho Sik Rho Heung Soo Baek Soo Mi Ahn Jae Won Yoo Duck Hee Kim Han Gon Kim 《Bioorganic & medicinal chemistry letters》2009,19(5):1532-1533
Six diphenolic compounds containing adamantane moiety were synthesized and evaluated as potent inhibitors on tyrosinase activity and melanin formation in melan-a cells. The inhibitory activity of 4-adamantyl resorcinol 1 was similar to that of 4-n-butyl resorcinol in both assays. However, dihydroxyl benzamide derivatives 6a–e showed different inhibitory patterns. All derivatives significantly suppressed the cellular melanin formation without tyrosinase inhibitory activities. These behaviors indicated that the introduction of amide bond changes the binding mode of dihydroxyl groups to tyrosinase. Among derivatives, 6d (3,4-dihydroxyl compound) and 6e (2,3-dihydroxyl compound) showed stronger inhibitory activities (IC50 = 1.25 μM and 0.73 μM, respectively) as compared to 4-n-butyl resorcinol (IC50 = 21.64 μM) and hydroquinone (IC50 = 3.97 μM). This study showed that the position of dihydroxyl substituent at aromatic ring is important for the intercellular inhibition of melanin formation, and also amide linkage and adamantane moiety enhance the inhibition. 相似文献
10.
《Bioorganic & medicinal chemistry》2014,22(12):3096-3104
In this study, we synthesized a series of trans-indole-3-acrylamide derivatives (3a–k) and investigated their activity for inhibition of cell proliferation against five human cancer cell lines (HeLa, MCF7, MDA-MB-231, Raji and HL-60) by MTT assay. Compound 3e showed significant antiproliferative activity against both the Raji and HL-60 cell lines with IC50 values of 9.5 and 5.1 μM, respectively. Compound 3e also exhibited moderate inhibitory activity on tubulin polymerization (IC50 = 17 μM). Flow cytometric analysis of cultured cells treated with 3e also demonstrated that the compound caused cell cycle arrest at the G2/M phase in HL-60 and HeLa cells. Moreover, 3e, the most active compound, caused an apoptotic cell death through the activation of caspase-3. Docking simulations suggested that 3e binds to the colchicine site of tubulin. 相似文献
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A novel series of acridine-chromenone and quinoline-chromenone hybrids were designed, synthesized, and evaluated as anti-Alzheimer’s agents. All synthesized compounds were evaluated as cholinesterases (ChEs) inhibitors and among them, 7-(4-(6-chloro-2,3-dihydro-1H-cyclopenta[b]quinolin-9-ylamino)phenoxy)-4-methyl-2H-chromen-2-one (8e) exhibited the most potent anti-acetylcholinesterase (AChE) inhibitory activity (IC50 = 16.17 μM) comparing with rivastigmine (IC50 = 11.07 μM) as the reference drug. Also, compound 8e was assessed for its β-secretase (BACE1) inhibitory and neuroprotective activities which demonstrated satisfactory results. It should be noted that both kinetic study on the inhibition of AChE and molecular modeling revealed that compound 8e interacted simultaneously with both the catalytic active site (CAS) and peripheral anionic site (PAS) of AChE. 相似文献
13.
Design and synthesis of new potent anticancer pyrazoles with high FLT3 kinase inhibitory selectivity
A new series of 1H- and 2H-pyrazole derivatives (35 final compounds) has been designed and synthesized in this study. A selected group (13 compounds) was then tested over a panel of 60 cancer cell lines at a single dose concentration of 10 μM. At this concentration, six compounds have showed moderate to strong mean inhibitions, and were further tested at five-dose testing mode to determine their IC50 over the 60 cell lines. The IC50 values of the tested compounds indicated high potency (as for compound 10f) as well as high efficacy (as for compound 11e). Accordingly, compound 10f was then tested at a single dose concentration of 10 μM over a panel of 54 kinases to determine its kinase inhibitory profile. The compound has showed good selectivity towards FLT3 kinase, associated with a moderate potency, with an IC50 value of 1.74 μM. 相似文献
14.
《Bioorganic & medicinal chemistry》2016,24(7):1495-1503
Two series of afatinib derivatives bearing cinnamamide moiety (10a–n and 11a–h) were designed, synthesized and evaluated for the IC50 values against four cancer cell lines (A549, PC-3, MCF-7 and Hela). Two selected compounds (10e, 10k) were further evaluated for the inhibitory activity against EGFR and VEGFR2/KDR kinases. Seven of the compounds showed excellent cytotoxicity activity and selectivity with the IC50 values in single-digit μM to nanomole range. Three of them are equal to more active than positive control afatinib against one or more cell lines. The most promising compound 10k showed the best activity against A549, PC-3, MCF-7 and Hela cancer cell lines and EGFR kinase, with the IC50 values of 0.07 ± 0.02 μM, 7.67 ± 0.97 μM, 4.65 ± 0.90 μM and 4.83 ± 1.28 μM, which were equal to more active than afatinib (0.05 ± 0.01 μM, 4.1 ± 2.47 μM, 5.83 ± 1.89 μM and 6.81 ± 1.77 μM), respectively. Activity of compounds 10e (IC50 9.1 nM) and 10k (IC50 3.6 nM) against EGFR kinase were equal to the reference compound afatinib (IC50 1.6 nM). Structure–activity relationships (SARs) and docking studies indicated that replacement of the aqueous solubility 4-(dimethylamino)but-2-enamide group by cinnamamide moiety didn’t decrease the antitumor activity. The results suggested that methoxy substitution had a significant impact on the activity and methoxy substituted on C-4 or C-2,3,4 position was benefit for the activity. 相似文献
15.
《Bioorganic & medicinal chemistry》2014,22(4):1318-1328
One pot, three-component reaction of 1-acryloyl-3,5-bisarylmethylidenepiperidin-4-ones with isatin and sarcosine in molar ratios of 1:1:1 and 1:2:2 furnished to mono- and bis-spiropyrrolidine heterocyclic hybrids comprising functionalized piperidine, pyrrolidine and oxindole structural motifs. Both mono and bis-spiropyrrolidines displayed good inhibitory activity against acetylcholinesterase (AChE) with IC50 values of 2.36–9.43 μM. For butyrylcholinesterase (BChE), mono-cycloadducts in series 8 with IC50 values of lower than 10 μM displayed better inhibitory activities than their bis-cycloadduct analogs in series 9 with IC50 values of 7.44–19.12 μM. The cycloadducts 9j and 8e were found to be the most potent AChE and BChE inhibitors with IC50 values of 2.35 and 3.21 μM, respectively. Compound 9j was found to be competitive inhibitor of AChE while compound 8e was a mixed-mode inhibitor of BChE with calculated Ki values of 2.01 and 6.76 μM, respectively. Molecular docking on Torpedo californica AChE and human BChE showed good correlation between IC50 values and free binding energy values of the synthesized compounds docked into the active site of the enzymes. 相似文献
16.
A group of N-1 and C-3 disubstituted-indole Schiff bases bearing an indole N-1 (R′ = H, CH2Ph, COPh) substituent in conjunction with a C-3 –CHN–C6H4–4-X (X = F, Me, CF3, Cl) substituent were synthesized and evaluated as inhibitors of cyclooxygenase (COX) isozymes (COX-1/COX-2). Within this group of Schiff bases, compounds 15 (R1 = CH2Ph, X = F), 17 (R1 = CH2Ph, X = CF3), 18 (R1 = COPh, X = F) and 20 (R1 = COPh, X = CF3) were identified as effective and selective COX-2 inhibitors (COX-2 IC50’s = 0.32–0.84 μM range; COX-2 selectivity index (SI) = 113 to >312 range). 1-Benzoyl-3-[(4-trifluoromethylphenylimino)methyl]indole (20) emerged as the most potent (COX-1 IC50 >100 μM; COX-2 IC50 = 0.32 μM) and selective (SI >312) COX-2 inhibitor. Furthermore, compound 20 is a selective COX-2 inhibitor in contrast to the reference drug indomethacin that is a potent and selective COX-1 inhibitor (COX-1 IC50 = 0.13 μM; COX-2 IC50 = 6.9 μM, COX-2 SI = 0.02). Molecular modeling studies employing compound 20 showed that the phenyl CF3 substituent attached to the CN spacer is positioned near the secondary pocket of the COX-2 active site, the CN nitrogen atom is hydrogen bonded (N?NH = 2.85 Å) to the H90 residue, and the indole N-1 benzoyl is positioned in a hydrophobic pocket of the COX-2 active site near W387. 相似文献
17.
2-Indolcarbohydrazones 1–28 were synthesized and evaluated for their α-glucosidase inhibitory potential. A varying degree of inhibitory potential with IC50 values in the range of 2.3 ± 0.11–226.4 ± 6.8 μM was observed while comparing these outcomes with the standard acarbose (IC50 = 906.0 ± 6.3 μM). The stereochemistry of ten (10) randomly selected compounds (1, 3, 6, 8, 12, 18, 19, 23, 25 and 28) was predicted by Density Functional Theory (DFT). The stability of E isomer was deduced by comparing the calculated and experimental vibration modes of νCO, νNC and νCH (CH in NCH-R). It was observed that except compound 18, all other compounds were deduced to have E configuration while molecular modeling studies revealed the key interactions between enzyme and synthesized compounds. 相似文献
18.
Jatinder Kaur Atul Bhardwaj Sai Kiran Sharma Frank Wuest 《Bioorganic & medicinal chemistry》2013,21(14):4288-4295
A novel group of 1,4-diaryl-substituted triazoles was designed and synthesized by introducing the cyclooxygenase-2 (COX-2) pharmacophore SO2NH2 attached to one aryl ring and various substituents (H, F, Cl, CH3 or OCH3) attached to the other aryl ring. The effects of size and flexibility of the compounds upon COX-1/COX-2 inhibitory potency and selectivity was studied by increasing the size of an alkyl linker chain [(–CH2)n, where n = 0, 1, 2]. In vitro COX-1/COX-2 inhibition studies showed that all compounds (14–18, 21–25 and 28–32) are more potent inhibitors of COX-2 isozyme (IC50 = 0.17–28.0 μM range) compared to COX-1 isozyme (IC50 = 21.0 to >100 μM range). Within the group of 1,4 diaryl-substituted triazoles, 4-{2-[4-(4-chloro-phenyl)-[1,2,3]triazol-1-yl]-ethyl}-benzenesulfonamide (compound 30) displayed highest COX-2 inhibitory potency and selectivity (COX-1: IC50 = >100 μM, COX-2: IC50 = 0.17 μM, SI >588). Molecular docking studies using the catalytic site of COX-1 and COX-2, respectively, provided complementary theoretical support for the obtained experimental biological structure–activity relationship data. Results of molecular docking studies revealed that COX-2 pharmacophore SO2NH2 in compound 30 is positioned in the secondary pocket of COX-2 active site; with the nitrogen atom of the SO2NH2 group being hydrogen bonded to Q192 (N?OC = 2.85 Å), and one of the oxygen atoms of SO2NH2 group forming a hydrogen bond to H90 (SO?N = 2.38 Å). 相似文献
19.
A new series of coumarin thiazole derivatives 7a-7t were synthesized, characterized by 1H NMR, 13C NMR and element analysis, evaluated for their α-glucosidase inhibitory activity. The majority of the screened compounds displayed potent inhibitory activities with IC50 values in the range of 6.24 ± 0.07–81.69 ± 0.39 μM, when compared to the standard acarbose (IC50 = 43.26 ± 0.19 μM). Structure–activity relationship (SAR) studies suggest that the pattern of substitution in the phenyl ring is closely related to the biological activity of this class of compounds. Among all the tested molecules, compound 7e (IC50 = 6.24 ± 0.07 μM) was found to be the most active compound in the library of coumarin thiazole derivatives. Enzyme kinetic studies showed that compound 7e is a non-competitive inhibitor with a Ki of 6.86 μM. Furthermore, the binding interactions of compound 7e with the active site of α-glucosidase were confirmed through molecular docking. This study has identified a new class of potent α-glucosidase inhibitors for further investigation. 相似文献
20.
《Bioorganic & medicinal chemistry》2016,24(16):3501-3512
A new series of 4-anilinoquinazolines with C-6 ureido and thioureido side chains and various substituents at the C-4 anilino moiety was designed, synthesized and evaluated as wild type (WT) and mutant EGFR inhibitors. Most of the compounds inhibited EGFR kinase wild type (EGFR WT) with IC50 values in the low nanomolar range (<0.495–9.05 nM) and displayed more potent cytotoxic effect in BaF/3 expressing EGFR WT than reference compound gefitinib. The anti-proliferative effect of all synthesized compounds against gefitinib insensitive double mutant cell lines Ba/F3 expressing Del19/T790M and Ba/F3 expressing L858R/T790M were assayed. Compounds 4d, 6f, 7e showed significant inhibition (IC50 = 1.76–2.38 μM) in these mutant lines and significant Her2 enzyme inhibition (IC50 = 19.2–40.6 nM) compared to lapatinib (60.1 nM). The Binding mode of compounds 6d, 6f, 7a, 7b and 8b were demonstrated. Furthermore, growth inhibition against gefitinib insensitive cell lines PC9-GR4 (Del19/T790M) were tested, compounds 6f and 7e showed about eight and three folds respectively greater potency than gefitinib. Our structure–activity relationships (SAR) studies suggested that presence of ethyl piperidino urea/thiourea at 6-position and bulky group of (3-chloro-4-(3-fluorobenzyloxy)phenyl)amino at 4-position of quinazoline may serve as promising scaffold for developing inhibitors against wild type and mutant EGFR. 相似文献