1
|
Chan KH, Zheng BX, Leung ASL, Long W, Zhao Y, Zheng Y, Wong WL. A NRAS mRNA G-quadruplex structure-targeting small-molecule ligand reactivating DNA damage response in human cancer cells for combination therapy with clinical PI3K inhibitors. Int J Biol Macromol 2024; 279:135308. [PMID: 39244134 DOI: 10.1016/j.ijbiomac.2024.135308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 09/02/2024] [Accepted: 09/02/2024] [Indexed: 09/09/2024]
Abstract
The Neuroblastoma RAS (NRAS) oncogene homologue plays crucial roles in diverse cellular processes such as cell proliferation, survival, and differentiation. Several strategies have been developed to inhibit NRAS or its downstream effectors; however, there is no effective drug available to treat NRAS-driven cancers and thus new approaches are needed to be established. The mRNA sequence expressing NRAS containing several guanine(G)-rich regions may form quadruplex structures (G4s) and regulate NRAS translation. Therefore, targeting NRAS mRNA G4s to repress NRAS expression at translational level with ligands may be a feasible strategy against NRAS-driven cancers but it is underexplored. We reported herein a NRAS mRNA G4-targeting ligand, B3C, specifically localized in cytoplasm in HeLa cells. It effectively downregulates NRAS proteins, reactivates the DNA damage response (DDR), causes cell cycle arrest in G2/M phase, and induces apoptosis and senescence. Moreover, combination therapy with NARS mRNA G4-targeting ligands and clinical PI3K inhibitors for cancer cells inhibition treatment is unexplored, and we demonstrated that B3C combining with PI3Ki (pictilisib (GDC-0941)) showed potent antiproliferation activity against HeLa cells (IC50 = 1.03 μM (combined with 10 μM PI3Ki) and 0.42 μM (combined with 20 μM PI3Ki)) and exhibited strong synergistic effects in inhibiting cell proliferation. This study provides new insights into drug discovery against RAS-driven cancers using this conceptually new combination therapy strategy.
Collapse
Affiliation(s)
- Ka-Hin Chan
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China
| | - Bo-Xin Zheng
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China
| | - Alan Siu-Lun Leung
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China
| | - Wei Long
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China
| | - Yuchen Zhao
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China
| | - Yingying Zheng
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China
| | - Wing-Leung Wong
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China.
| |
Collapse
|
2
|
Sun JW, Zou J, Zheng Y, Yuan H, Xie YZY, Wang XN, Ou TM. Design, synthesis, and evaluation of novel quindoline derivatives with fork-shaped side chains as RNA G-quadruplex stabilizers for repressing oncogene NRAS translation. Eur J Med Chem 2024; 271:116406. [PMID: 38688064 DOI: 10.1016/j.ejmech.2024.116406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 03/25/2024] [Accepted: 04/09/2024] [Indexed: 05/02/2024]
Abstract
NRAS mutation is the second most common oncogenic factor in cutaneous melanoma. Inhibiting NRAS translation by stabilizing the G-quadruplex (G4) structure with small molecules seems to be a potential strategy for cancer therapy due to the NRAS protein's lack of a druggable pocket. To enhance the effects of previously reported G4 stabilizers quindoline derivatives, we designed and synthesized a novel series of quindoline derivatives with fork-shaped side chains by introducing (alkylamino)alkoxy side chains. Panels of experimental results showed that introducing a fork-shaped (alkylamino)alkoxy side chain could enhance the stabilizing abilities of the ligands against NRAS RNA G-quadruplexes and their anti-melanoma activities. One of them, 10b, exhibited good antitumor activity in the NRAS-mutant melanoma xenograft mouse model, showing the therapeutic potential of this kind of compounds.
Collapse
Affiliation(s)
- Jia-Wei Sun
- School of Pharmaceutical Sciences, State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, 510006, China
| | - Jing Zou
- School of Pharmaceutical Sciences, State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, 510006, China
| | - Ying Zheng
- School of Pharmaceutical Sciences, State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, 510006, China
| | - Hao Yuan
- School of Pharmaceutical Sciences, State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yuan-Ze-Yu Xie
- School of Pharmaceutical Sciences, State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, 510006, China
| | - Xiao-Na Wang
- School of Pharmaceutical Sciences, State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, 510006, China
| | - Tian-Miao Ou
- School of Pharmaceutical Sciences, State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, 510006, China.
| |
Collapse
|
3
|
Romano F, Di Porzio A, Iaccarino N, Riccardi G, Di Lorenzo R, Laneri S, Pagano B, Amato J, Randazzo A. G-quadruplexes in cancer-related gene promoters: from identification to therapeutic targeting. Expert Opin Ther Pat 2023; 33:745-773. [PMID: 37855085 DOI: 10.1080/13543776.2023.2271168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 10/11/2023] [Indexed: 10/20/2023]
Abstract
INTRODUCTION Guanine-rich DNA sequences can fold into four-stranded noncanonical secondary structures called G-quadruplexes (G4s) which are widely distributed in functional regions of the human genome, such as telomeres and gene promoter regions. Compelling evidence suggests their involvement in key genome functions such as gene expression and genome stability. Notably, the abundance of G4-forming sequences near transcription start sites suggests their potential involvement in regulating oncogenes. AREAS COVERED This review provides an overview of current knowledge on G4s in human oncogene promoters. The most representative G4-binding ligands have also been documented. The objective of this work is to present a comprehensive overview of the most promising targets for the development of novel and highly specific anticancer drugs capable of selectively impacting the expression of individual or a limited number of genes. EXPERT OPINION Modulation of G4 formation by specific ligands has been proposed as a powerful new tool to treat cancer through the control of oncogene expression. Actually, most of G4-binding small molecules seem to simultaneously target a range of gene promoter G4s, potentially influencing several critical driver genes in cancer, thus producing significant therapeutic benefits.
Collapse
Affiliation(s)
- Francesca Romano
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Anna Di Porzio
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Nunzia Iaccarino
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | | | | | - Sonia Laneri
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Bruno Pagano
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Jussara Amato
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Antonio Randazzo
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| |
Collapse
|
4
|
Chan KH, Wang Y, Zheng BX, Long W, Feng X, Wong WL. RNA-Selective Small-Molecule Ligands: Recent Advances in Live-Cell Imaging and Drug Discovery. ChemMedChem 2023; 18:e202300271. [PMID: 37649155 DOI: 10.1002/cmdc.202300271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 08/13/2023] [Accepted: 08/24/2023] [Indexed: 09/01/2023]
Abstract
RNA structures, including those formed from coding and noncoding RNAs, alternative to protein-based drug targets, could be a promising target of small molecules for drug discovery against various human diseases, particularly in anticancer, antibacterial and antivirus development. The normal cellular activity of cells is critically dependent on the function of various RNA molecules generated from DNA transcription. Moreover, many studies support that mRNA-targeting small molecules may regulate the synthesis of disease-related proteins via the non-covalent mRNA-ligand interactions that do not involve gene modification. RNA-ligand interaction is thus an attractive approach to address the challenge of "undruggable" proteins in drug discovery because the intracellular activity of these proteins is hard to be suppressed with small molecule ligands. We selectively surveyed a specific area of RNA structure-selective small molecule ligands in fluorescence live cell imaging and drug discovery because the area was currently underexplored. This state-of-the-art review thus mainly focuses on the research published within the past three years and aims to provide the most recent information on this research area; hopefully, it could be complementary to the previously reported reviews and give new insights into the future development on RNA-specific small molecule ligands for live cell imaging and drug discovery.
Collapse
Affiliation(s)
- Ka Hin Chan
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, SAR 999077, P. R. China
| | - Yakun Wang
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, 518057, P. R. China
| | - Bo-Xin Zheng
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, SAR 999077, P. R. China
| | - Wei Long
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, SAR 999077, P. R. China
| | - Xinxin Feng
- State Key Laboratory of Chem-/Bio-Sensing and Chemometrics, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology and School of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Wing-Leung Wong
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, SAR 999077, P. R. China
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, 518057, P. R. China
| |
Collapse
|
5
|
Balaratnam S, Torrey ZR, Calabrese DR, Banco MT, Yazdani K, Liang X, Fullenkamp CR, Seshadri S, Holewinski RJ, Andresson T, Ferré-D'Amaré AR, Incarnato D, Schneekloth JS. Investigating the NRAS 5' UTR as a target for small molecules. Cell Chem Biol 2023; 30:643-657.e8. [PMID: 37257453 DOI: 10.1016/j.chembiol.2023.05.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/24/2023] [Accepted: 05/10/2023] [Indexed: 06/02/2023]
Abstract
Neuroblastoma RAS (NRAS) is an oncogene that is deregulated and highly mutated in cancers including melanomas and acute myeloid leukemias. The 5' untranslated region (UTR) (5' UTR) of the NRAS mRNA contains a G-quadruplex (G4) that regulates translation. Here we report a novel class of small molecule that binds to the G4 structure located in the 5' UTR of the NRAS mRNA. We used a small molecule microarray screen to identify molecules that selectively bind to the NRAS-G4 with submicromolar affinity. One compound inhibits the translation of NRAS in vitro but showed only moderate effects on the NRAS levels in cellulo. Rapid Amplification of cDNA Ends and RT-PCR analysis revealed that the predominant NRAS transcript does not possess the G4 structure. Thus, although NRAS transcripts lack a G4 in many cell lines the concept of targeting folded regions within 5' UTRs to control translation remains a highly attractive strategy.
Collapse
Affiliation(s)
- Sumirtha Balaratnam
- Chemical Biology Laboratory, National Cancer Institute, Frederick, MD 21702, USA
| | - Zachary R Torrey
- Chemical Biology Laboratory, National Cancer Institute, Frederick, MD 21702, USA
| | - David R Calabrese
- Chemical Biology Laboratory, National Cancer Institute, Frederick, MD 21702, USA
| | - Michael T Banco
- Biochemistry and Biophysics Center, National Heart, Lung and Blood Institute, Bethesda, MD 20892, USA
| | - Kamyar Yazdani
- Chemical Biology Laboratory, National Cancer Institute, Frederick, MD 21702, USA
| | - Xiao Liang
- Chemical Biology Laboratory, National Cancer Institute, Frederick, MD 21702, USA
| | | | - Srinath Seshadri
- Chemical Biology Laboratory, National Cancer Institute, Frederick, MD 21702, USA
| | - Ronald J Holewinski
- Protein Characterization Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc, Frederick, MD 21702, USA
| | - Thorkell Andresson
- Protein Characterization Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc, Frederick, MD 21702, USA
| | - Adrian R Ferré-D'Amaré
- Biochemistry and Biophysics Center, National Heart, Lung and Blood Institute, Bethesda, MD 20892, USA
| | - Danny Incarnato
- Department of Molecular Genetics, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, the Netherlands
| | - John S Schneekloth
- Chemical Biology Laboratory, National Cancer Institute, Frederick, MD 21702, USA.
| |
Collapse
|
6
|
Katsuda Y, Sato SI, Inoue M, Tsugawa H, Kamura T, Kida T, Matsumoto R, Asamitsu S, Shioda N, Shiroto S, Oosawatsu Y, Yatsuzuka K, Kitamura Y, Hagihara M, Ihara T, Uesugi M. Small molecule-based detection of non-canonical RNA G-quadruplex structures that modulate protein translation. Nucleic Acids Res 2022; 50:8143-8153. [PMID: 35801908 PMCID: PMC9371906 DOI: 10.1093/nar/gkac580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 05/24/2022] [Accepted: 06/23/2022] [Indexed: 11/29/2022] Open
Abstract
Tandem repeats of guanine-rich sequences in RNA often form thermodynamically stable four-stranded RNA structures. Such RNA G-quadruplexes have long been considered to be linked to essential biological processes, yet their physiological significance in cells remains unclear. Here, we report a approach that permits the detection of RNA G-quadruplex structures that modulate protein translation in mammalian cells. The approach combines antibody arrays and RGB-1, a small molecule that selectively stabilizes RNA G-quadruplex structures. Analysis of the protein and mRNA products of 84 cancer-related human genes identified Nectin-4 and CapG as G-quadruplex-controlled genes whose mRNAs harbor non-canonical G-quadruplex structures on their 5′UTR region. Further investigations revealed that the RNA G-quadruplex of CapG exhibits a structural polymorphism, suggesting a possible mechanism that ensures the translation repression in a KCl concentration range of 25–100 mM. The approach described in the present study sets the stage for further discoveries of RNA G-quadruplexes.
Collapse
Affiliation(s)
- Yousuke Katsuda
- Division of Materials Science and Chemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Shin-Ichi Sato
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Maimi Inoue
- Division of Materials Science and Chemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Hisashi Tsugawa
- Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Takuto Kamura
- Division of Materials Science and Chemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Tomoki Kida
- Division of Materials Science and Chemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Rio Matsumoto
- Division of Materials Science and Chemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Sefan Asamitsu
- Department of Genomic Neurology, Institute of Molecular Embryology and Genetics, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto 860-0811, Japan
| | - Norifumi Shioda
- Department of Genomic Neurology, Institute of Molecular Embryology and Genetics, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto 860-0811, Japan.,Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe, Chuo-ku, Kumamoto 862-0973, Japan
| | - Shuhei Shiroto
- Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Yoshiki Oosawatsu
- Division of Materials Science and Chemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Kenji Yatsuzuka
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yusuke Kitamura
- Division of Materials Science and Chemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Masaki Hagihara
- Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Toshihiro Ihara
- Division of Materials Science and Chemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Motonari Uesugi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.,School of Pharmacy, Fudan University, Shanghai 201203, China
| |
Collapse
|
7
|
Discovery of novel benzofuro[3,2-b]quinoline derivatives as dual CDK2/Topo I inhibitors. Bioorg Chem 2022; 126:105870. [DOI: 10.1016/j.bioorg.2022.105870] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/26/2022] [Accepted: 05/09/2022] [Indexed: 12/31/2022]
|
8
|
Chu QR, He YH, Tang C, Zhang ZJ, Luo XF, Zhang BQ, Zhou Y, Wu TL, Du SS, Yang CJ, Liu YQ. Design, Synthesis, and Antimicrobial Activity of Quindoline Derivatives Inspired by the Cryptolepine Alkaloid. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:2851-2863. [PMID: 35226498 DOI: 10.1021/acs.jafc.1c07536] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Based on the structural characteristics of the cryptolepine alkaloid, a series of new quindoline derivatives bearing various substituents were prepared and evaluated for their fungicidal and antibacterial activities. Bioassay results showed that compound D7 displayed superior in vitro fungicidal activities against Sclerotinia sclerotiorum, Botrytis cinerea, Fusarium graminearum, and Rhizoctonia solani with EC50 values of 0.780, 3.62, 1.59, and 2.85 μg/mL, respectively. Compound A7 showed apparent antibacterial activities toward Xanthomonas oryzae pv. oryzae with a minimum inhibitory concentration (MIC) value of 3.12 μg/mL. Significantly, in vivo antifungal activity suggested that the curative effect (98.3%) of compound D7 was comparable to that of the positive control azoxystrobin (96.7%) at 100 μg/mL. Preliminary mechanistic studies showed that compound D7 might cause mycelial abnormality of S. sclerotiorum, cell membrane breakage, accumulation of reactive oxygen species (ROS), and inhibition of sclerotia formation. Therefore, compound D7 could be a novel broad-spectrum fungicidal candidate against plant fungal diseases.
Collapse
Affiliation(s)
- Qing-Ru Chu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ying-Hui He
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Chen Tang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Zhi-Jun Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Xiong-Fei Luo
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Bao-Qi Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yong Zhou
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Tian-Lin Wu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Sha-Sha Du
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Cheng-Jie Yang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
- State Key Laboratory of Grassland Agro-ecosystems, Lanzhou University, Lanzhou 730000, People's Republic of China
| |
Collapse
|
9
|
Piperine analogs arrest c-myc gene leading to downregulation of transcription for targeting cancer. Sci Rep 2021; 11:22909. [PMID: 34824301 PMCID: PMC8617303 DOI: 10.1038/s41598-021-01529-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/28/2021] [Indexed: 11/08/2022] Open
Abstract
G-quadruplex (G4) structures are considered a promising therapeutic target in cancer. Since Ayurveda, Piperine has been known for its medicinal properties. Piperine shows anticancer properties by stabilizing the G4 motif present upstream of the c-myc gene. This gene belongs to a group of proto-oncogenes, and its aberrant transcription drives tumorigenesis. The transcriptional regulation of the c-myc gene is an interesting approach for anticancer drug design. The present study employed a chemical similarity approach to identify Piperine similar compounds and analyzed their interaction with cancer-associated G-quadruplex motifs. Among all Piperine analogs, PIP-2 exhibited strong selectivity, specificity, and affinity towards c-myc G4 DNA as elaborated through biophysical studies such as fluorescence emission, isothermal calorimetry, and circular dichroism. Moreover, our biophysical observations are supported by molecular dynamics analysis and cellular-based studies. Our study showed that PIP-2 showed higher toxicity against the A549 lung cancer cell line but lower toxicity towards normal HEK 293 cells, indicating increased efficacy of the drug at the cellular level. Biological evaluation assays such as TFP reporter assay, quantitative real-time PCR (qRT- PCR), and western blotting suggest that the Piperine analog-2 (PIP-2) stabilizes the G-quadruplex motif located at the promoter site of c-myc oncogene and downregulates its expression. In conclusion, Piperine analog PIP-2 may be used as anticancer therapeutics as it affects the c-myc oncogene expression via G-quadruplex mediated mechanism.
Collapse
|
10
|
Nuthakki VK, Mudududdla R, Bharate SB. Role of basic aminoalkyl chains in the lead optimization of Indoloquinoline alkaloids. Eur J Med Chem 2021; 227:113938. [PMID: 34710743 DOI: 10.1016/j.ejmech.2021.113938] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/12/2021] [Accepted: 10/19/2021] [Indexed: 11/19/2022]
Abstract
Indoloquinoline (IQ) is an important class of naturally occurring antimalarial alkaloids, mainly represented by cryptolepine, isocryptolepine, and neocryptolepine. The IQ structural framework consists of four isomeric ring systems differing via the linkage of indole with quinoline as [3,2-b], [3,2-c], [2,3-c], and [2,3-b]. Structurally, IQs are planar and thus they bind strongly to the DNA which largely contributes to their biological properties. The structural rigidity and associated nonspecific cellular toxicity is a key shortcoming of the IQ structural framework for preclinical development. Thus, the lead optimization efforts were aimed at improving the therapeutic window and ADME properties of IQs. The structural modifications mainly involved attaching the basic aminoalkyl chains that positively modulates the vital physicochemical and topological parameters, thereby improves biological activity. Our analysis has found that the aminoalkylation consistently improved the selectivity index and provided acceptable in-vivo antimalarial/anticancer activity. Herein, we critically review the role of aminoalkylation in deciphering the antimalarial and cytotoxic activity of IQs.
Collapse
Affiliation(s)
- Vijay K Nuthakki
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ramesh Mudududdla
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sandip B Bharate
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, India.
| |
Collapse
|
11
|
Hu Y, Shi W, Yan Z, Liao J, Liu M, Xu J, Wang W, Wu Y, Zhang C, Guo H. Base-Catalyzed Sequential 1,4-Addition/Intramolecular Cyclization/Aromatization Reaction: Synthesis of Benzofuro[3,2- b]pyridines. Org Lett 2021; 23:6780-6783. [PMID: 34432980 DOI: 10.1021/acs.orglett.1c02357] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An efficient K2CO3-catalyzed 1,4-addition/intramolecular cyclization/aromatization reaction of aurone-derived 1-azadienes with trisubstituted allenoates has been developed, giving a series of benzofuro[3,2-b]pyridines in moderate to excellent yields. The reaction proceeded efficiently under an air atmosphere without the use of transition metal catalysts. This protocol provides a concise approach to benzofuro[3,2-b]pyridines.
Collapse
Affiliation(s)
- Yimin Hu
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Wangyu Shi
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Zhengyang Yan
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Jianning Liao
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Min Liu
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Jiaqing Xu
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Wei Wang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Yongjun Wu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Cheng Zhang
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Hongchao Guo
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| |
Collapse
|
12
|
Sanchez-Martin V, Soriano M, Garcia-Salcedo JA. Quadruplex Ligands in Cancer Therapy. Cancers (Basel) 2021; 13:3156. [PMID: 34202648 PMCID: PMC8267697 DOI: 10.3390/cancers13133156] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/18/2021] [Accepted: 06/20/2021] [Indexed: 02/07/2023] Open
Abstract
Nucleic acids can adopt alternative secondary conformations including four-stranded structures known as quadruplexes. To date, quadruplexes have been demonstrated to exist both in human chromatin DNA and RNA. In particular, quadruplexes are found in guanine-rich sequences constituting G-quadruplexes, and in cytosine-rich sequences forming i-Motifs as a counterpart. Quadruplexes are associated with key biological processes ranging from transcription and translation of several oncogenes and tumor suppressors to telomeres maintenance and genome instability. In this context, quadruplexes have prompted investigations on their possible role in cancer biology and the evaluation of small-molecule ligands as potential therapeutic agents. This review aims to provide an updated close-up view of the literature on quadruplex ligands in cancer therapy, by grouping together ligands for DNA and RNA G-quadruplexes and DNA i-Motifs.
Collapse
Affiliation(s)
- Victoria Sanchez-Martin
- Centre for Genomics and Oncological Research, Pfizer-University of Granada-Andalusian Regional Government, PTS Granada, 18016 Granada, Spain;
- Microbiology Unit, Biosanitary Research Institute IBS, University Hospital Virgen de las Nieves, 18014 Granada, Spain
- Department of Biochemistry, Molecular Biology III and Immunology, University of Granada, 18016 Granada, Spain
| | - Miguel Soriano
- Centre for Genomics and Oncological Research, Pfizer-University of Granada-Andalusian Regional Government, PTS Granada, 18016 Granada, Spain;
- Centre for Intensive Mediterranean Agrosystems and Agri-Food Biotechnology (CIAMBITAL), University of Almeria, 04001 Almeria, Spain
| | - Jose Antonio Garcia-Salcedo
- Centre for Genomics and Oncological Research, Pfizer-University of Granada-Andalusian Regional Government, PTS Granada, 18016 Granada, Spain;
- Microbiology Unit, Biosanitary Research Institute IBS, University Hospital Virgen de las Nieves, 18014 Granada, Spain
| |
Collapse
|
13
|
Lauria A, La Monica G, Bono A, Martorana A. Quinoline anticancer agents active on DNA and DNA-interacting proteins: From classical to emerging therapeutic targets. Eur J Med Chem 2021; 220:113555. [PMID: 34052677 DOI: 10.1016/j.ejmech.2021.113555] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 05/10/2021] [Accepted: 05/13/2021] [Indexed: 12/25/2022]
Abstract
Quinoline is one of the most important and versatile nitrogen heterocycles embodied in several biologically active molecules. Within the numerous quinolines developed as antiproliferative agents, this review is focused on compounds interfering with DNA structure or with proteins/enzymes involved in the regulation of double helix functional processes. In this light, a special focus is given to the quinoline compounds, acting with classical/well-known mechanisms of action (DNA intercalators or Topoisomerase inhibitors). In particular, the quinoline drugs amsacrine and camptothecin (CPT) have been studied as key lead compounds for the development of new agents with improved PK and tolerability properties. Moreover, notable attention has been paid to the quinoline molecules, which are able to interfere with emerging targets involved in cancer progression, as G-quadruplexes or the epigenetic ones (e.g.: histone deacetylase, DNA and histones methyltransferase). The antiproliferative and the enzymatic inhibition data of the reviewed compounds have been analyzed. Furthermore, concerning the SAR (structure-activity relationship) aspects, the most recurrent ligand-protein interactions are summarized, underling the structural requirements for each kind of mechanism of action.
Collapse
Affiliation(s)
- Antonino Lauria
- Dipartimento di Scienze e Technologie Biologiche Chimiche e Farmaceutiche "STEBICEF" - University of Palermo, Via Archirafi - 32, 90123, Palermo, Italy
| | - Gabriele La Monica
- Dipartimento di Scienze e Technologie Biologiche Chimiche e Farmaceutiche "STEBICEF" - University of Palermo, Via Archirafi - 32, 90123, Palermo, Italy
| | - Alessia Bono
- Dipartimento di Scienze e Technologie Biologiche Chimiche e Farmaceutiche "STEBICEF" - University of Palermo, Via Archirafi - 32, 90123, Palermo, Italy
| | - Annamaria Martorana
- Dipartimento di Scienze e Technologie Biologiche Chimiche e Farmaceutiche "STEBICEF" - University of Palermo, Via Archirafi - 32, 90123, Palermo, Italy.
| |
Collapse
|
14
|
Feng Q, Wu A, Zhang X, Song L, Sun J. An unusual formal migrative cycloaddition of aurone-derived azadienes: synthesis of benzofuran-fused nitrogen heterocycles. Chem Sci 2021; 12:7953-7957. [PMID: 34168849 PMCID: PMC8188467 DOI: 10.1039/d1sc00941a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aurone-derived azadienes are well-known four-atom synthons for direct [4 + n] cycloadditions owing to their s-cis conformation as well as the thermodynamically favored aromatization nature of these processes. However, distinct from this common reactivity, herein we report an unusual formal migrative annulation with siloxy alkynes initiated by [2 + 2] cycloaddition. Unexpectedly, this process generates benzofuran-fused nitrogen heterocyclic products with formal substituent migration. This observation is rationalized by less common [2 + 2] cycloaddition followed by 4π and 6π electrocyclic events. DFT calculations provided support to the proposed mechanism.
Collapse
Affiliation(s)
- Qiang Feng
- Department of Chemistry, Shenzhen Research Institute, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong SAR China
| | - An Wu
- Department of Chemistry, Shenzhen Research Institute, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong SAR China
| | - Xinhao Zhang
- Shenzhen Bay Laboratory, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School Shenzhen China
| | - Lijuan Song
- School of Science, Harbin Institute of Technology (Shenzhen) Shenzhen 518055 China
| | - Jianwei Sun
- Department of Chemistry, Shenzhen Research Institute, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong SAR China .,The Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction Clear Water Bay Kowloon Hong Kong SAR China
| |
Collapse
|
15
|
Zhu CF, Chen LQ, Hao WJ, Cui CC, Tu SJ, Jiang B. Diastereoselective Synthesis of 1,2-Dihydrobenzofuro[3,2- b]pyridines via a Carbon-Carbon Double-Bond Cleavage/Rearrangement Cascade. Org Lett 2021; 23:2654-2658. [PMID: 33728923 DOI: 10.1021/acs.orglett.1c00564] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A new Lewis acid-catalyzed [2 + 2] cycloaddition/retroelectrocyclization (CA-RE)/1,6-addition relay of aurone-derived 1-azadienes and 1-alkynylnaphthalen-2-ols has been reported, leading to the regio- and diastereoselective synthesis of 1,2-dihydrobenzofuro[3,2-b]pyridine with a chiral carbon center and an axial chirality in good yields. This protocol enables the C-C double-bond scission/recombination to rapidly construct aza-heterocyclic architectures and features 100% atom utilization, a wide substrate scope, good compatibility with substituents, and excellent diastereoselectivity.
Collapse
Affiliation(s)
- Chi-Fan Zhu
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Ling-Qi Chen
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Wen-Juan Hao
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Chen-Chang Cui
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| |
Collapse
|
16
|
Tao Y, Zheng Y, Zhai Q, Wei D. Recent advances in the development of small molecules targeting RNA G-quadruplexes for drug discovery. Bioorg Chem 2021; 110:104804. [PMID: 33740677 DOI: 10.1016/j.bioorg.2021.104804] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/27/2021] [Accepted: 03/02/2021] [Indexed: 12/12/2022]
Abstract
Extensive evidence indicates that RNA G-quadruplexes have associated with some important cellular events. Investigation of RNA G-quadruplexes is thus vital to revealing their biofunctions. Several small molecules have been developed to target RNA G-quadruplexes to date. Some of the small molecules showed significantly light-up fluorescence signals upon binding to RNA G-quadruplexes, while some of them regulated the biofunctions of RNA G-quadruplexes. In this mini-review, the small molecules divided into four kinds are expounded which focused mainly on their structural features and biological activities. Moreover, we raised the current challenges and promising prospects. This mini-review might contribute to exploiting more sophisticated small molecules targeting RNA G-quadruplexes with high specificity based on the reported chemical structural features.
Collapse
Affiliation(s)
- Yanfei Tao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; National Reference Laboratory of Veterinary Drug Residues (HZAU) and MAO Key Laboratory for Detection of Veterinary Drug Residues, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Yingge Zheng
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; National Reference Laboratory of Veterinary Drug Residues (HZAU) and MAO Key Laboratory for Detection of Veterinary Drug Residues, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Qianqian Zhai
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; Department of Chemistry, College of Science, Huazhong Agricultural University, Wuhan 430070, China.
| | - Dengguo Wei
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; National Reference Laboratory of Veterinary Drug Residues (HZAU) and MAO Key Laboratory for Detection of Veterinary Drug Residues, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China.
| |
Collapse
|
17
|
Zeng H, Kang S, Zhang Y, Liu K, Yu Q, Li D, An LK. Synthesis and Biological Evaluation of Oleanolic Acid Derivatives as Selective Vascular Endothelial Growth Factor Promoter i-Motif Ligands. Int J Mol Sci 2021; 22:1711. [PMID: 33567767 PMCID: PMC7915724 DOI: 10.3390/ijms22041711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/04/2021] [Accepted: 02/04/2021] [Indexed: 12/01/2022] Open
Abstract
Vascular endothelial growth factor (VEGF) is an angiogenic growth factor and plays a key role in tumor progression. The C-rich DNA sequence of VEGF promoter can form i-motif structure, which is a potential target for the development of novel anticancer agents. However, there is a limited number of chemotypes as the selective ligands of VEGF promoter i-motif, which leaves much room for development. Herein, we report the discovery of the natural oleanolic acid scaffold as a novel chemotype for the development of selective ligands of VEGF i-motif. A series of oleanolic acid derivatives as VEGF promoter i-motif ligands were synthesized. Subsequent evaluations showed that 3c could selectively bind to and stabilize VEGF promoter i-motif without significant binding to G-quadruplex, duplex DNA, and other oncogene i-motifs. Cell-based assays indicated that 3c could effectively downregulate VEGF gene transcription and expression in MCF-7 cells, inhibit tumor cells proliferation and migration, and induce cancer cells apoptosis. This work provides evidence of VEGF promoter i-motif as an anticancer target and will facilitate future efforts for the discovery of oleanolic acid-based selective ligands of VEGF promoter i-motif.
Collapse
Affiliation(s)
- Huang Zeng
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; (H.Z.); (S.K.); (Y.Z.); (K.L.); (Q.Y.)
| | - Shuangshuang Kang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; (H.Z.); (S.K.); (Y.Z.); (K.L.); (Q.Y.)
| | - Yu Zhang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; (H.Z.); (S.K.); (Y.Z.); (K.L.); (Q.Y.)
| | - Ke Liu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; (H.Z.); (S.K.); (Y.Z.); (K.L.); (Q.Y.)
| | - Qian Yu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; (H.Z.); (S.K.); (Y.Z.); (K.L.); (Q.Y.)
| | - Ding Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; (H.Z.); (S.K.); (Y.Z.); (K.L.); (Q.Y.)
| | - Lin-Kun An
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; (H.Z.); (S.K.); (Y.Z.); (K.L.); (Q.Y.)
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, Guangzhou 510006, China
| |
Collapse
|
18
|
Andreeva DV, Tikhomirov AS, Shchekotikhin AE. Ligands of G-quadruplex nucleic acids. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr4968] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
19
|
Cheng MSQ, Su MXX, Wang MXN, Sun MZY, Ou TM. Probes and drugs that interfere with protein translation via targeting to the RNAs or RNA-protein interactions. Methods 2019; 167:124-133. [PMID: 31185274 DOI: 10.1016/j.ymeth.2019.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 04/08/2019] [Accepted: 06/05/2019] [Indexed: 11/18/2022] Open
Abstract
Protein synthesis is critical to cell survival and translation regulation is essential to post-transcriptional gene expression regulation. Disorders of this process, particularly through RNA-binding proteins, is associated with the development and progression of a number of diseases, including cancers. However, the molecular mechanisms underlying the initiation of protein synthesis are intricate, making it difficult to find a drug that interferes with this process. Chemical probes are useful in elucidating the structures of RNA-protein complex and molecular mechanism of biological events. Moreover, some of these chemical probes show certain therapeutic benefits and can be further developed as leading compounds. Here, we will briefly review the general process and mechanism of protein synthesis, and emphasis on chemical probes in examples of probing the RNA structural changes and RNA-protein interactions. Moreover, the therapeutic potential of these probes is also discussed to give a comprehensive understanding.
Collapse
Affiliation(s)
- Miss Sui-Qi Cheng
- Sun Yat-Sen University, School of Pharmaceutical Sciences, Guangzhou, Guangdong 510006, China
| | - Miss Xiao-Xuan Su
- Sun Yat-Sen University, School of Pharmaceutical Sciences, Guangzhou, Guangdong 510006, China.
| | - Miss Xiao-Na Wang
- Sun Yat-Sen University, School of Pharmaceutical Sciences, Guangzhou, Guangdong 510006, China
| | - Miss Zhi-Yin Sun
- Sun Yat-Sen University, School of Pharmaceutical Sciences, Guangzhou, Guangdong 510006, China
| | - Tian-Miao Ou
- Sun Yat-Sen University, School of Pharmaceutical Sciences, 132 Waihuan East Road, Guangzhou University City, Guangzhou, Guangdong, China.
| |
Collapse
|
20
|
Yuan JM, Wei K, Zhang GH, Chen NY, Wei XW, Pan CX, Mo DL, Su GF. Cryptolepine and aromathecin based mimics as potent G-quadruplex-binding, DNA-cleavage and anticancer agents: Design, synthesis and DNA targeting-induced apoptosis. Eur J Med Chem 2019; 169:144-158. [DOI: 10.1016/j.ejmech.2019.02.072] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 02/26/2019] [Accepted: 02/26/2019] [Indexed: 01/05/2023]
|
21
|
Zeng R, Shan C, Liu M, Jiang K, Ye Y, Liu TY, Chen YC. [4 + 1 + 1] Annulations of α-Bromo Carbonyls and 1-Azadienes toward Fused Benzoazaheterocycles. Org Lett 2019; 21:2312-2316. [PMID: 30900459 DOI: 10.1021/acs.orglett.9b00598] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An unexpected [4 + 1 + 1] annulation between α-bromo carbonyls and 1-azadienes, derived from 2-methylenebenzofuran-3(2 H)-ones or 2-methylenebenzo[ b]thiophene-3(2 H)-ones, has been observed in the presence of DABCO and Cs2CO3. These reactions stand in contrast to the common [4 + 1] cyclization reactions of azadienes with the related sulfonium ylides. A range of fused benzofuro[3,2- b]pyridines and benzo[4,5]thieno[3,2- b]pyridines have been efficiently constructed in fair to excellent yields.
Collapse
Affiliation(s)
- Rong Zeng
- College of Pharmacy , Third Military Medical University , Shapingba, Chongqing 400038 , China
| | - Changyu Shan
- College of Pharmacy , Third Military Medical University , Shapingba, Chongqing 400038 , China
| | - Ming Liu
- College of Pharmacy , Third Military Medical University , Shapingba, Chongqing 400038 , China
| | - Kun Jiang
- College of Pharmacy , Third Military Medical University , Shapingba, Chongqing 400038 , China
| | - Ying Ye
- College of Pharmacy , Third Military Medical University , Shapingba, Chongqing 400038 , China
| | - Tian-Yu Liu
- College of Pharmacy , Third Military Medical University , Shapingba, Chongqing 400038 , China
| | - Ying-Chun Chen
- College of Pharmacy , Third Military Medical University , Shapingba, Chongqing 400038 , China.,Department of Medicinal Chemistry, West China School of Pharmacy , Sichuan University , Chengdu 610041 , China
| |
Collapse
|
22
|
Yu. Shuvalov V, Rupp AS, Fisyuk AS, Kuratova AK, Nefedov AA, Sagitullina GP. Synthesis and Optical Properties of Alkaloid Quindoline, Its Structural Analogues and Substituted δ‐Carbolines. ChemistrySelect 2019. [DOI: 10.1002/slct.201803515] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Vladislav Yu. Shuvalov
- Department of Organic ChemistryF. M. Dostoevsky Omsk State University, 55a Mira Ave. 644077 Omsk Russian Federation
- Laboratory of New Organic MaterialsOmsk State Technical University 11 Mira Ave. 644050 Omsk Russian Federation
| | - Anna S. Rupp
- Department of Organic ChemistryF. M. Dostoevsky Omsk State University, 55a Mira Ave. 644077 Omsk Russian Federation
| | - Alexander S. Fisyuk
- Department of Organic ChemistryF. M. Dostoevsky Omsk State University, 55a Mira Ave. 644077 Omsk Russian Federation
- Laboratory of New Organic MaterialsOmsk State Technical University 11 Mira Ave. 644050 Omsk Russian Federation
| | - Anna K. Kuratova
- Department of Organic ChemistryF. M. Dostoevsky Omsk State University, 55a Mira Ave. 644077 Omsk Russian Federation
| | - Andrey A. Nefedov
- N. N. Vorozhtsov Institute of Organic ChemistrySiberian Branch of the Russian Academy of Sciences 9 Lavrentiev Ave. 630090 Novosibirsk Russian Federation
| | - Galina P. Sagitullina
- Department of Organic ChemistryF. M. Dostoevsky Omsk State University, 55a Mira Ave. 644077 Omsk Russian Federation
| |
Collapse
|