Article
Medicine, Research & Experimental
Ho Jin Lee, Phuong Chi Pham, Honglan Pei, Bumhee Lim, Seung Yeob Hyun, Byungyeob Baek, Byungjin Kim, Yunha Kim, Min-Hwan Kim, Nae-Won Kang, Hye-Young Min, Dae-Duk Kim, Jeeyeon Lee, Ho-Young Lee
Summary: The study revealed that LL6 is a novel IGF-1R/Src/AXL-targeting small molecule kinase inhibitor, showing inhibitory effects on non-small cell lung cancer cells, reducing tumor growth and metastasis with low toxicity.
Article
Chemistry, Medicinal
Ivana Mejdrova, Jan Dusek, Krystof Skach, Alzbeta Stefela, Josef Skoda, Karel Chalupsky, Klara Dohnalova, Ivona Pavkova, Thales Kronenberger, Azam Rashidian, Lucie Smutna, Vojtech Duchoslav, Tomas Smutny, Petr Pavek, Radim Nencka
Summary: The nuclear constitutive androstane receptor (CAR, NR1I3) plays significant roles in hepatic functions and has been proposed as a target for metabolic or liver disease therapy. However, current CAR agonists have limited selectivity. We discovered derivatives that directly activate human CAR and are selective, non-toxic, and show in vivo activity, highlighting CAR as a therapeutic target.
JOURNAL OF MEDICINAL CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Yulia A. Volkova, Irina Rassokhina, Eugeny A. Kondrakhin, Alexey Rossokhin, Sergey N. Kolbaev, Tatiana B. Tihonova, Mamedsalim Kh Dzhafarov, Marina A. Schetinina, Elena Chernoburova, Ekaterina V. Vasileva, Andrey S. Dmitrenok, Georgy Kovalev, Irina N. Sharonova, Igor Zavarzin
Summary: This study reports the synthesis of avermectin-imidazo[1,2-a]pyridine hybrids as potential positive allosteric modulators (PAMs) of the GABA(A) receptors. The compounds showed high potency for binding at the benzodiazepine site of GABA(A) receptors and their potentiating effect was evaluated using patch-clamp electrophysiological recordings. The investigation of these hybrids is important for the discovery of safe and effective drugs for neurological disorders and pest control agents.
BIOORGANIC CHEMISTRY
(2022)
Article
Chemistry, Organic
Javeed Ahmad Tali, Ravi Shankar
Summary: Here, we report an unprecedented protocol using ruthenium-catalyzed annulation for the synthesis of 6H-chromeno[4 ',3 ':4,5]imidazo[1,2-a]pyridin-6-one, and a new method for intramolecular chelation-assisted C-H activation to produce functionalized 2-(3-formylimidazo[1,2-a]pyridin-2-yl)phenyl acetate. Furthermore, a one-pot approach using ruthenium catalysis and formic acid has been developed for the gram-scale synthesis of bis(2-phenylimidazo[1,2-a]pyridin-3yl)methane (BIP) and the late-stage functionalization of zolimidine, a marketed drug, with good yield.
Article
Biology
Jie Li, Jiayi Wu, Catherine Hall, Xiao-chen Bai, Eunhee Choi, Emily J. Gallagher
Summary: The insulin receptor (IR) and insulin-like growth factor 1 receptor (IGF1R) play crucial roles in metabolic homeostasis and cell growth. This study reveals that the structural rigidity of the disulfide-linked alpha CTs is critical for optimal IR and IGF1R signaling activation.
Article
Chemistry, Multidisciplinary
Rajavenkatesh Krishnamoorthy, Parthiban Anaikutti
Summary: An efficient iodine-catalyzed method for synthesizing imidazo[1,2-a]pyrazines and imidazo[1,2-a]pyridines via one-pot three-component condensations has been reported. The photophysical properties of these new fluorescent derivatives are also presented. The synthesized compounds were evaluated for their anti-cancer activities and one compound showed promising results.
Article
Chemistry, Organic
Srinivas Endoori, Kali Charan Gulipalli, Srinu Bodige, Parameshwar Ravula, Nareshvarma Seelam
Summary: A novel series of imidazo[1,2-a]pyridine based 1H-1,2,3-triazole derivatives were designed, synthesized, and evaluated for their anticancer activity against two different human cancer cell lines. Most of the synthesized compounds displayed anticancer activity, and compounds 9b, 9c, 9d, 9f, and 9j showed potent inhibitory activity against cancer cell lines, with compound 9d being more potent than the standard drug cisplatin.
JOURNAL OF HETEROCYCLIC CHEMISTRY
(2021)
Article
Chemistry, Medicinal
Yun Zhang, Anjie Xia, Shiyu Zhang, Guifeng Lin, Jingming Liu, Pei Chen, Bo Mu, Yan Jiao, Wenwen Xu, Mingxin Chen, Linli Li
Summary: A new class of CLK1 inhibitors, with compound 9e being the most potent, was discovered in this study. Compound 9e efficiently induces autophagy, decreases phosphorylation levels of CLK1 downstream substrates, and affects their subcellular redistribution, showing promise as a lead compound for drug discovery targeting CLK1 kinase.
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Organic
Meng-Qi Ping, Ming-Zhong Guo, Rui-Tao Li, Zi-Chen Wang, Cheng Ma, Li-Rong Wen, Shao-Fei Ni, Weisi Guo, Ming Li, Lin-Bao Zhang
Summary: This study has successfully developed an efficient electrochemical method for the [3 + 2] annulation of imidazo[1,2-a]pyridines with alkynes, using traceless electrons as green reagents. It leads to the synthesis of a large class of polycyclic heteroaromatics with good yields and a broad substrate scope under mild and green conditions.
Review
Endocrinology & Metabolism
Mengyang Li
Summary: The GH/IGF system plays a role in growth regulation in the body. By studying the basal chordate amphioxus, it was discovered that most members of the GH/IGF system are present in amphioxus, providing strong evidence for the origin of this system in amphioxus.
FRONTIERS IN ENDOCRINOLOGY
(2022)
Review
Endocrinology & Metabolism
Artak Labadzhyan, Shlomo Melmed
Summary: Molecular therapeutic targets in growth hormone-secreting adenomas have potential for drug development, including surface receptors recognized by approved drugs and markers for new drug candidates. Current medical therapies control the disease in most patients but the degree of control varies and is related to disease aggressiveness and tumor factors. Understanding the mechanisms behind these molecular markers and their relationship to outcomes holds promise for expanding treatment options and personalized approaches.
FRONTIERS IN ENDOCRINOLOGY
(2022)
Article
Chemistry, Medicinal
Josef Jansa, Radek Jorda, Jana Skerlova, Petr Pachl, Miroslav Perina, Eva Reznickova, Tomas Heger, Tomas Gucky, Pavlina Rezacova, Antonin Lycka, Vladimir Krystof
Summary: This study presents a series of substituted imidazo[1,2-c]pyrimidines as inhibitors of cyclin-dependent kinase 2 (CDK2), synthesized using various methods including Suzuki-Miyaura cross-coupling and halogenation. The compounds exhibited micro-to submicromolar inhibition of CDK2/cyclin E activity, with one compound showing strong binding to CDK2 and high selectivity against leukemia cell lines. This research suggests the potential of substituted imidazo[1,2-c]pyrimidines for future kinase inhibitor development.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2021)
Article
Chemistry, Medicinal
William McCoull, Scott Boyd, Martin R. Brown, Muireann Coen, Olga Collingwood, Nichola L. Davies, Ann Doherty, Gary Fairley, Kristin Goldberg, Elizabeth Hardaker, Guang He, Edward J. Hennessy, Philip Hopcroft, George Hodgson, Anne Jackson, Xiefeng Jiang, Ankur Karmokar, Anne-Laure Laine, Nicola Lindsay, Yumeng Mao, Roshini Markandu, Lindsay McMurray, Neville McLean, Lorraine Mooney, Helen Musgrove, J. Willem M. Nissink, Alexander Pflug, Venkatesh Pilla Reddy, Philip B. Rawlins, Emma Rivers, Marianne Schimpl, Graham F. Smith, Sharon Tentarelli, Jon Travers, Robert Troup, Josephine Walton, Cheng Wang, Stephen Wilkinson, Beth Williamson, Jon Winter-Holt, Dejian Yang, Yuting Zheng, Qianxiu Zhu, Paul D. Smith
Summary: Inhibition of Mer and Axl kinases has been suggested as a potential way to enhance immuno-oncology therapeutics by restoring the innate immune response in the tumor microenvironment. Highly selective dual Mer/Axl kinase inhibitors were optimized from hits from a DNA-encoded library screen, showing in vivo efficacy and target engagement in Mer- and Axl-dependent efficacy models. Additionally, in vivo efficacy was observed in a preclinical MC38 immuno-oncology model in combination with anti-PD1 antibodies and ionizing radiation.
JOURNAL OF MEDICINAL CHEMISTRY
(2021)
Review
Endocrinology & Metabolism
Derek LeRoith, Jeff M. P. Holly, Briony E. Forbes
Summary: The IGF family of ligands, receptors, and binding proteins play critical roles in normal human physiology and disease states. IGF-I regulates cellular growth, differentiation, and survival to control overall body growth, while IGF-II has important effects prenatally and in tissue-specific roles in adults.
MOLECULAR METABOLISM
(2021)
Article
Chemistry, Medicinal
Hui Li, Sheng-Lie Zhang, Yan-Han Jia, Qian Li, Zi-Wen Feng, Shi-Duo Zhang, Wei Zheng, Ye-Ling Zhou, Lin-Lin Li, Xue-Chun Liu, Ya-Qiong Chen, Hui Peng, Qi-Dong You, Xiao-Li Xu
Summary: ABCB1 and ABCG2 are important ATP-binding cassette (ABC) transporters associated with multidrug resistance (MDR). In this study, we designed a series of imidazo[1,2-a]pyridine derivatives as dual-target inhibitors of ABCB1 and ABCG2 through scaffold hopping strategy. Compound Y22 demonstrated potential efflux function inhibition towards both ABCB1 and ABCG2 without cytotoxicity, and enhanced the potency of antiproliferative drugs in vitro. Mechanistic studies showed that Y22 slightly suppressed ATPase activity, but did not affect the protein expression of ABCB1 or ABCG2. Notably, Y22 exhibited negligible CYP3A4 inhibition and enhanced the antiproliferative activity of adriamycin in vivo by restoring the sensitivity of resistant cells. Thus, Y22 may be effective clinically in combination with common chemotherapy agents.
JOURNAL OF MEDICINAL CHEMISTRY
(2023)
Review
Chemistry, Medicinal
Kyle A. Emmitte
EXPERT OPINION ON THERAPEUTIC PATENTS
(2017)
Article
Chemistry, Medicinal
Andrew S. Felts, Alice L. Rodriguez, Anna L. Blobaum, Ryan D. Morrison, Brittney S. Bates, Analisa Thompson Gray, Jerri M. Rook, Mohammed N. Tantawy, Frank W. Byers, Sichen Chang, Daryl F. Venable, Vincent B. Luscombe, Gilles D. Tamagnan, Colleen M. Niswender, J. Scott Daniels, Carrie K. Jones, P. Jeffrey Conn, Craig W. Lindsley, Kyle A. Emmitte
JOURNAL OF MEDICINAL CHEMISTRY
(2017)
Article
Neurosciences
Adam G. Walker, Douglas J. Sheffler, Andrew S. Lewis, Jonathan W. Dickerson, Daniel J. Foster, Rebecca K. Senter, Mark S. Moehle, Xiaohui Lv, Branden J. Stansley, Zixiu Xiang, Jerri M. Rook, Kyle A. Emmitte, Craig W. Lindsley, P. Jeffrey Conn
NEUROPSYCHOPHARMACOLOGY
(2017)
Article
Biochemistry & Molecular Biology
Julie L. Engers, Aaron M. Bender, Jacob J. Kalbfleisch, Hyekyung P. Cho, Kaelyn S. Lingenfelter, Vincent B. Luscombe, Changho Han, Bruce J. Melancon, Anna L. Blobaum, Jonathan W. Dickerson, Jerri M. Rook, Colleen M. Niswender, Kyle A. Emmitte, P. Jeffrey Conn, Craig W. Lindsley
ACS CHEMICAL NEUROSCIENCE
(2019)
Article
Chemistry, Medicinal
Joseph D. Panarese, Darren W. Engers, Yong-Jin Wu, Jason M. Guernon, Aspen Chun, Alison R. Gregro, Aaron M. Bender, Rory A. Capstick, Joshua M. Wieting, Joanne J. Bronson, John E. Macor, Ryan Westphal, Matthew Soars, Julie E. Engers, Andrew S. Felts, Alice L. Rodriguez, Kyle A. Emmitte, Carrie K. Jones, Anna L. Blobaum, P. Jeffrey Conn, Colleen M. Niswender, Corey R. Hopkins, Craig W. Lindsley
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2019)
Article
Chemistry, Medicinal
Andrew S. Felts, Katrina A. Bollinger, Christopher J. Brassard, Alice L. Rodriguez, Ryan D. Morrison, J. Scott Daniels, Anna L. Blobaum, Colleen M. Niswender, Carrie K. Jones, P. Jeffrey Conn, Kyle A. Emmitte, Craig W. Lindsley
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2019)
Article
Oncology
Ashwini Zolekar, Victor J. T. Lin, Nigam M. Mishra, Yin Ying Ho, Hamed S. Hayatshahi, Abhishek Parab, Rohit Sampat, Xiaoyan Liao, Peter Hoffmann, Jin Liu, Kyle A. Emmitte, Yu-Chieh Wang
BRITISH JOURNAL OF CANCER
(2018)
Article
Chemistry, Medicinal
Elizabeth S. Childress, Joshua M. Wieting, Andrew S. Felts, Megan M. Breiner, Madeline F. Long, Vincent B. Luscombe, Alice L. Rodriguez, Hyekyung P. Cho, Anna L. Blobaum, Colleen M. Niswender, Kyle A. Emmitte, P. Jeffrey Conn, Craig W. Lindsley
JOURNAL OF MEDICINAL CHEMISTRY
(2019)
Article
Chemistry, Medicinal
Joseph D. Panarese, Darren W. Engers, Yong-Jin Wu, Joanne J. Bronson, John E. Macor, Aspen Chun, Alice L. Rodriguez, Andrew S. Felts, Julie L. Engers, Matthew T. Loch, Kyle A. Emmitte, Arlindo L. Castelhano, Michael J. Kates, Michael A. Nader, Carrie K. Jones, Anna L. Blobaurn, P. Jeffrey Conn, Colleen M. Niswender, Corey R. Hopkins, Craig W. Lindsley
ACS MEDICINAL CHEMISTRY LETTERS
(2019)
Article
Biochemistry & Molecular Biology
Brittany D. Spitznagel, Nigam M. Mishra, Alshaima'a M. Qunies, Francis J. Prael, Yu Du, Krystian A. Kozek, Roman M. Lazarenko, Jerod S. Denton, Kyle A. Emmitte, C. David Weaver
ACS CHEMICAL NEUROSCIENCE
(2020)
Article
Chemistry, Medicinal
Corinna Schuess, Oanh Vu, Mario Schubert, Yu Du, Nigam M. Mishra, Iain R. Tough, Jan Stichel, C. David Weaver, Kyle A. Emmitte, Helen M. Cox, Jens Meiler, Annette G. Beck-Sickinger
Summary: The study identified the first selective Y4R allosteric antagonist (S)-VU0637120 and investigated its mechanism of action, revealing new insights into how it functions. This research provides important information for understanding Y4R function and contributes to the development of allosteric modulators for peptide-activated G protein-coupled receptors (GPCRs).
JOURNAL OF MEDICINAL CHEMISTRY
(2021)
Review
Chemistry, Medicinal
Alshaima'a M. Qunies, Kyle A. Emmitte
Summary: Group II metabotropic glutamate (mGlu) receptors are promising targets for novel CNS therapeutics. This review summarizes patent applications for small molecule negative allosteric modulators (NAMs) targeting mGlu receptors between January 2015 and November 2020. Progress has been made in the discovery of new mGlu(2) NAMs, while mGlu(3) NAMs are more limited but show promise.
EXPERT OPINION ON THERAPEUTIC PATENTS
(2021)
Review
Pharmacology & Pharmacy
Alshaima'a M. Qunies, Kyle A Emmitte
Summary: This review summarizes patent applications published in 2020-2021 that describe the discovery of novel small-molecule Slack inhibitors. Slack channels are associated with malignant migrating partial seizures of infancy and other childhood epilepsies, and quinidine, although moderately effective, has limitations in terms of selectivity and safety.
PHARMACEUTICAL PATENT ANALYST
(2022)
Article
Chemistry, Medicinal
Alshaima'a Qunies, Nigam Mishra, Brittany Spitznagel, Yu Du, Valerie Acun, C. Weaver, Kyle Emmitte
Summary: In this Letter, the structure-activity relationship (SAR) studies of a new series of 2-amino-N-phenylacetamides Slack potassium channel inhibitors were described. The screening of new analogs revealed a flat SAR and significant structural modifications resulted in a loss of Slack activity. Minor changes led to compounds with similar Slack activity and selectivity towards other Slo family members.
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Medicinal
Andrew S. Felts, Alice L. Rodriguez, Ryan D. Morrison, Katrina A. Bollinger, Daryl F. Venable, Anna L. Blobaum, Frank W. Byers, Analisa Thompson Gray, J. Scott Daniels, Colleen M. Niswender, Carrie K. Jones, P. Jeffrey Conn, Craig W. Lindsley, Kyle A. Emmitte
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2017)
Article
Chemistry, Medicinal
Shibin Zhao, Julian Maceren, Mia Chung, Samantha Stone, Raphael Geiben, Melissa L. Boby, Bradley S. Sherborne, Derek S. Tan
Summary: Antibiotic resistance is a major threat to public health, with Gram-negative bacteria presenting unique challenges due to their low permeability and efflux pumps. Limited understanding of the chemical rules for overcoming these barriers hinders antibacterial drug discovery. Efforts to address this issue, such as screening compound libraries and using cheminformatic analysis, have led to the design of sulfamidoadenosines with diverse substituents, showing potential utility in accumulation in Escherichia coli.
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2024)
Article
Chemistry, Medicinal
Jichun Li, Qing Li, Shuai Xia, Jiahuang Tu, Longbo Zheng, Qian Wang, Shibo Jiang, Chao Wang
Summary: This study successfully developed a short peptide mimetic as a MERS-CoV fusion inhibitor by reproducing the key recognition features of the HR2 helix. The resulting 23-mer lipopeptide showed comparable inhibitory effect to the 36-mer HR2 peptide HR2P-M2. This has important implications for developing short peptide-based antiviral agents to treat MERS-CoV infection.
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2024)
Article
Chemistry, Medicinal
Krista Jaunsleine, Linda Supe, Jana Spura, Sten van Beek, Anna Sandstrom, Jessica Olsen, Carina Halleskog, Tore Bengtsson, Ilga Mutule, Benjamin Pelcman
Summary: Beta(2)-adrenergic receptor agonists can stimulate glucose uptake by skeletal muscle cells and are therefore potential treatments for type 2 diabetes. The chirality of compounds has a significant impact on the activity of these agonists. This study found that certain synthesized compounds showed higher glucose uptake activity. These findings provide important information for the design of novel beta(2)AR agonists for T2D treatment.
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2024)
Article
Chemistry, Medicinal
Xin Xu, Jia Chen, Guan Wang, Xiaojuan Zhang, Qiang Li, Xiaobo Zhou, Fengying Guo, Min Li
Summary: The study focuses on EZH2, a promising therapeutic target for various types of cancers. Researchers designed and synthesized a series of novel derivatives aiming to enhance the EZH2 inhibition activity. Among them, compound 28 displayed potent EZH2 inhibition activity and showed high anti-proliferative effects in lymphoma cell lines and xenograft mouse models. The study suggests that compound 28 has potential as a therapeutic candidate for EZH2-associated cancers.
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2024)
Article
Chemistry, Medicinal
Wei Zhang, Wei Liu, Ya-Dong Zhao, Li-Zi Xing, Ji Xu, Rui-Jun Li, Yun-Xiao Zhang
Summary: This study developed a series of aromatic amide derivatives based on Rhein and investigated their inhibitory activity against alpha-Syn aggregation. Two of these compounds showed promising potential in treating Parkinson's disease by stabilizing alpha-Syn's conformation and disassembling alpha-Syn oligomers and fibrils.
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2024)
Article
Chemistry, Medicinal
Mani Sharma, S. S. S. S. Sudha Ambadipudi, Neeraj Kumar Chouhan, V. Lakshma Nayak, Srihari Pabbaraja, Sai Balaji Andugulapati, Ramakrishna Sistla
Summary: Therapeutically active lipids in drug delivery systems can enhance the safety and efficacy of treatment. The liposome formulation created using synthesized biologically active lipids showed additive anti-cancer effects and reduced tumorigenic potential.
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2024)