1
|
Venkatesh R, Narayan AC, Kandasamy J. Synthesis of deoxybenzoins from β-alkoxy styrenes and arylboronic acids via palladium-catalyzed regioselective Heck-arylation reactions. Org Biomol Chem 2024; 22:5193-5197. [PMID: 38864361 DOI: 10.1039/d4ob00616j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Palladium-catalyzed synthesis of deoxybenzoin derivatives from styryl ethers and arylboronic acids is reported. The reaction proceeds under mild conditions in the presence of TEMPO and provides the desired products in good to excellent yields. Simple operation, broad substrate scope, and functional group tolerance are the salient features of the developed methodology.
Collapse
Affiliation(s)
- Rapelly Venkatesh
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh-221005, India.
| | - Aswathi C Narayan
- Department of Chemistry, Pondicherry University, Pondicherry-605014, India.
| | - Jeyakumar Kandasamy
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh-221005, India.
- Department of Chemistry, Pondicherry University, Pondicherry-605014, India.
| |
Collapse
|
2
|
Yang YM, Yan W, Hu HW, Luo Y, Tang ZY, Luo Z. Photoinduced Acetylation of Anilines under Aqueous and Catalyst-Free Conditions. J Org Chem 2021; 86:12344-12353. [PMID: 34370464 DOI: 10.1021/acs.joc.1c01290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A green and efficient visible-light induced functionalization of anilines under mild conditions has been reported. Utilizing nontoxic, cost-effective, and water-soluble diacetyl as photosensitizer and acetylating reagent, and water as the solvent, a variety of anilines were converted into the corresponding aryl ketones, iodides, and bromides. With advantages of environmentally friendly conditions, simple operation, broad substrate scope, and functional group tolerance, this reaction represents a valuable method in organic synthesis.
Collapse
Affiliation(s)
- Yu-Ming Yang
- School of Pharmaceutical Science (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China.,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Wei Yan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Han-Wei Hu
- School of Pharmaceutical Science (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Yimin Luo
- School of Material, Sun Yat-sen University, Guangzhou 510275, China
| | - Zhen-Yu Tang
- School of Pharmaceutical Science (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China.,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Zhuangzhu Luo
- School of Material, Sun Yat-sen University, Guangzhou 510275, China
| |
Collapse
|
3
|
New Arylethanolimidazole Derivatives as HO-1 Inhibitors with Cytotoxicity against MCF-7 Breast Cancer Cells. Int J Mol Sci 2020; 21:ijms21061923. [PMID: 32168943 PMCID: PMC7139504 DOI: 10.3390/ijms21061923] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/05/2020] [Accepted: 03/10/2020] [Indexed: 02/07/2023] Open
Abstract
In this paper, a novel series of imidazole-based heme oxygenase-1 (HO-1) inhibitors is reported. These compounds were obtained by modifications of previously described high potent and selective arylethanolimidazoles. In particular, simplification of the central linker and repositioning of the hydrophobic portion were carried out. Results indicate that a hydroxyl group in the central region is crucial for the potency as well as the spatial distribution of the hydrophobic portion. Docking studies revealed a similar interaction of the classical HO-1 inhibitors with the active site of the protein. The most potent and selective compound (5a) was tested for its potential cytotoxic activity against hormone-sensitive and hormone-resistant breast cancer cell lines (MCF-7 and MDA-MB-231).
Collapse
|
4
|
Tripathi RKP, Ayyannan SR. Monoamine oxidase-B inhibitors as potential neurotherapeutic agents: An overview and update. Med Res Rev 2019; 39:1603-1706. [PMID: 30604512 DOI: 10.1002/med.21561] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 12/13/2018] [Accepted: 12/15/2018] [Indexed: 12/23/2022]
Abstract
Monoamine oxidase (MAO) inhibitors have made significant contributions and remain an indispensable approach of molecular and mechanistic diversity for the discovery of antineurodegenerative drugs. However, their usage has been hampered by nonselective and/or irreversible action which resulted in drawbacks like liver toxicity, cheese effect, and so forth. Hence, the search for selective MAO inhibitors (MAOIs) has become a substantial focus in current drug discovery. This review summarizes our current understanding on MAO-A/MAO-B including their structure, catalytic mechanism, and biological functions with emphases on the role of MAO-B as a potential therapeutic target for the development of medications treating neurodegenerative disorders. It also highlights the recent developments in the discovery of potential MAO-B inhibitors (MAO-BIs) belonging to diverse chemical scaffolds, arising from intensive chemical-mechanistic and computational studies documented during past 3 years (2015-2018), with emphases on their potency and selectivity. Importantly, readers will gain knowledge of various newly established MAO-BI scaffolds and their development potentials. The comprehensive information provided herein will hopefully accelerate ideas for designing novel selective MAO-BIs with superior activity profiles and critical discussions will inflict more caution in the decision-making process in the MAOIs discovery.
Collapse
Affiliation(s)
- Rati Kailash Prasad Tripathi
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi, India.,Department of Pharmaceutical Chemistry, Parul Institute of Pharmacy, Parul University, Vadodara, India
| | - Senthil Raja Ayyannan
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi, India
| |
Collapse
|
5
|
Baranovskyi V, Symchak R, Pokryshko O, Klymnyuk S, Grishchuk B. Arylsubstituted Halogen(thiocyanato)amides Containing 4-Acetylphenyl Fragment. Synthesis, Cyclization and Antimicrobial Properties. CHEMISTRY & CHEMICAL TECHNOLOGY 2018. [DOI: 10.23939/chcht12.04.447] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
6
|
Krall J, Jensen CH, Bavo F, Falk-Petersen CB, Haugaard AS, Vogensen SB, Tian Y, Nittegaard-Nielsen M, Sigurdardóttir SB, Kehler J, Kongstad KT, Gloriam DE, Clausen RP, Harpsøe K, Wellendorph P, Frølund B. Molecular Hybridization of Potent and Selective γ-Hydroxybutyric Acid (GHB) Ligands: Design, Synthesis, Binding Studies, and Molecular Modeling of Novel 3-Hydroxycyclopent-1-enecarboxylic Acid (HOCPCA) and trans-γ-Hydroxycrotonic Acid (T-HCA) Analogs. J Med Chem 2017; 60:9022-9039. [DOI: 10.1021/acs.jmedchem.7b01351] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jacob Krall
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Claus Hatt Jensen
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Francesco Bavo
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
- Department
of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy
| | - Christina Birkedahl Falk-Petersen
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Anne Stæhr Haugaard
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Stine Byskov Vogensen
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Yongsong Tian
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Mia Nittegaard-Nielsen
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Sara Björk Sigurdardóttir
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Jan Kehler
- Discovery
Chemistry, H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark
| | - Kenneth Thermann Kongstad
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - David E. Gloriam
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Rasmus Prætorius Clausen
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Kasper Harpsøe
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Petrine Wellendorph
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Bente Frølund
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark
| |
Collapse
|
7
|
Visible-light assisted one-pot preparation of aryl glyoxals from acetoarylones via in-situ arylacyl bromides formation: Selenium-free approach to acetoarylones oxidation. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.01.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
8
|
Lan JS, Zhang T, Liu Y, Zhang Y, Hou JW, Xie SS, Yang J, Ding Y, Cai ZZ. Synthesis and evaluation of small molecules bearing a benzyloxy substituent as novel and potent monoamine oxidase inhibitors. MEDCHEMCOMM 2017; 8:471-478. [PMID: 30108765 DOI: 10.1039/c6md00586a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Accepted: 12/23/2016] [Indexed: 11/21/2022]
Abstract
A new series of small molecules bearing a benzyloxy substituent have been designed, synthesized and evaluated for hMAO inhibitory activity in vitro. Most of the compounds were potent and selective MAO-B inhibitors, and were weak inhibitors of MAO-A. In particular, compounds 9e (IC50 = 0.35 μM) and 10e (IC50 = 0.19 μM) were the most potent MAO-B inhibitors, and exhibited the highest selectivity for MAO-B (9e, SI > 285.7-fold and 10e, SI = 146.8-fold). In addition, the structure-activity relationships for MAO-B inhibition indicated that electron-withdrawing groups in the open small molecules were more suitable for MAO-B inhibition, and substitutions at the benzyloxy of the open small molecules, particularly with the halogen substituted benzyloxy, were more favorable for MAO-B inhibition. Molecular docking studies have been done to explain the potent MAO-B inhibition of the open small molecules. Furthermore, the representative compounds 9e and 10e showed low neurotoxicity in SH-SY5Y cells in vitro. So the small molecules bearing the benzyloxy substituent could be used to develop promising drug candidates for the therapy of neurodegenerative diseases.
Collapse
Affiliation(s)
- Jin-Shuai Lan
- Experiment Center of Teaching & Learning , Shanghai University of Traditional Chinese Medicine , Shanghai 201203 , China .
| | - Tong Zhang
- School of Pharmacy , Shanghai University of Traditional Chinese Medicine , Shanghai 201203 , China .
| | - Yun Liu
- Experiment Center of Teaching & Learning , Shanghai University of Traditional Chinese Medicine , Shanghai 201203 , China .
| | - Yong Zhang
- Experiment Center of Teaching & Learning , Shanghai University of Traditional Chinese Medicine , Shanghai 201203 , China .
| | - Jian-Wei Hou
- Experiment Center of Teaching & Learning , Shanghai University of Traditional Chinese Medicine , Shanghai 201203 , China .
| | - Sai-Sai Xie
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine , Jiangxi University of Traditional Chinese Medicine , Nanchang 330006 , China
| | - Jing Yang
- Experiment Center of Teaching & Learning , Shanghai University of Traditional Chinese Medicine , Shanghai 201203 , China .
| | - Yue Ding
- Experiment Center of Teaching & Learning , Shanghai University of Traditional Chinese Medicine , Shanghai 201203 , China .
| | - Zhen-Zhen Cai
- Experiment Center for Science and Technology , Shanghai University of Traditional Chinese Medicine , Shanghai 201203 , China .
| |
Collapse
|
9
|
Van der Walt MM, Terre’Blanche G, Petzer JP, Petzer A. Benzyloxynitrostyrene analogues – A novel class of selective and highly potent inhibitors of monoamine oxidase B. Eur J Med Chem 2017; 125:1193-1199. [DOI: 10.1016/j.ejmech.2016.11.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/14/2016] [Accepted: 11/07/2016] [Indexed: 01/04/2023]
|
10
|
Maroyi A. A review of ethnoboatany, therapeutic value, phytochemistry and pharmacology of Crinum macowanii Baker: A highly traded bulbous plant in Southern Africa. JOURNAL OF ETHNOPHARMACOLOGY 2016; 194:595-608. [PMID: 27773801 DOI: 10.1016/j.jep.2016.10.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 09/07/2016] [Accepted: 10/16/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Crinum macowanii is a deciduous bulbous plant which grows in east, central and southern Africa. Crinum macowanii has been used as herbal medicine by the indigenous people of east and southern Africa has for several centuries. The bulb, leaves and roots of C. macowanii are reported to possess diverse medicinal properties and used to treat or manage various human and animal diseases and ailments throughout its distributional range. Crinum macowanii is used traditionally as a remedy for boils, diarrhoea, fever, inflammation, respiratory system problems, skin rashes, tuberculosis, wounds and urinary tract problems. AIM OF THE REVIEW The present review aims to summarize comprehensively the research that has been done on the ethnomedicinal uses, botany, phytochemistry and pharmacology of C. macowanii in different locations throughout its geographical range in east, central and southern African region so as to highlight research gaps and provide a foundation for further investigations on the plant species. MATERIALS AND METHODS A review of the literature was undertaken and an in-depth analysis of previous research on ethnobotany, therapeutic value, phytochemistry and pharmacology of C. macowanii throughout its distributional range in east, central and southern Africa. Literature sources included papers published in international journals, reports from international, regional and national organizations, conference papers, books, theses, websites and other grey literature. Electronic search engines such as Google, Google scholar, publishing sites such as Elsevier, scienceDirect, BMC, PubMed and other scientific database sites such as ChemSpider, PubChem were used as well as searching the library collections of the National Herbarium and Botanic Gardens (SRGH), Harare, Zimbabwe and the University of Fort Hare, South Africa. RESULTS A total of 32 ethnomedicinal uses of C. macowanii are documented in literature, which can be grouped into seven major ethnomedicinal general purpose usages, namely "fever", "wounds, sores and skin rashes", "boils and inflammation", "respiratory system problems", "blood cleansing", "urinary tract problem" and "veterinary uses". The chemical composition of C. macowanii is dominated by various isoquinoline alkaloids, which have been isolated from the bulbs, flowering stalks, leaves and roots. Major biological activities demonstrated by C. macowanii include antifungal, antiviral and antiplasmodial activities, cardiovascular effects as well as effects on the central nervous system. The population of C. macowanii is declining in the wild as the bulbs are over-collected for sale in medicinal (muthi) markets in southern Africa. CONCLUSION A literature search revealed that C. macowanii has a lot of potential as a possible source of pharmaceutical products for the treatment of a wide range of human and animal diseases and ailments. Some of the alkaloids isolated from C. macowanii have demonstrated various biological activities when investigated in in vitro assays. However, some of the ethnomedicinal uses of C. macowanii still require pharmacological investigations. Therefore, further studies are required to improve our knowledge about the mechanisms of action, efficacy, toxicity and clinical relevance of the plant species as well as its bioactive compounds.
Collapse
Affiliation(s)
- Alfred Maroyi
- Department of Botany, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa.
| |
Collapse
|