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Uchida Y, Takikawa H, Kang B. A step-economical divergent approach to isoflavenes based on Suzuki-Miyaura cross coupling of a 3-boryl-2H-chromene with aryl bromides: application to total synthesis of isoflavonoid natural products. Biosci Biotechnol Biochem 2023; 87:954-959. [PMID: 37291696 DOI: 10.1093/bbb/zbad076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 06/03/2023] [Indexed: 06/10/2023]
Abstract
We present a step-economical divergent synthetic approach for isoflavene derivatives using the Suzuki-Miyaura cross coupling of a 3-boryl-2H-chromene and three aryl bromides. 3-Boryl-2H-chromene, which is not a well-explored species, was prepared via Miyaura-Ishiyama borylation of a 3-chloro-2H-chromene obtained through a Claisen rearrangement cyclization cascade reaction. Further conversion of the cross-coupling products, three isoflavene derivatives, afforded three isoflavonoid natural products with one or two additional reaction steps.
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Affiliation(s)
- Yuichiro Uchida
- Department of Applied Chemistry in Bioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada, Kobe, Japan
| | - Hirosato Takikawa
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, Japan
| | - Bubwoong Kang
- Department of Applied Chemistry in Bioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada, Kobe, Japan
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2
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Desta KT, Abd El-Aty AM. Millettia isoflavonoids: a comprehensive review of structural diversity, extraction, isolation, and pharmacological properties. PHYTOCHEMISTRY REVIEWS : PROCEEDINGS OF THE PHYTOCHEMICAL SOCIETY OF EUROPE 2022; 22:275-308. [PMID: 36345415 PMCID: PMC9630821 DOI: 10.1007/s11101-022-09845-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
UNLABELLED There are approximately 260 known species in the genus Millettia, many of which are used in traditional medicine to treat human and other animal ailments in various parts of the world. Being in the Leguminosae (Fabaceae) family, Millettia species are rich sources of isoflavonoids. In the past three decades alone, several isoflavonoids originating from Millettia have been isolated, and their pharmacological activities have been evaluated against major diseases, such as cancer, inflammation, and diabetes. Despite such extensive research, no recent and comprehensive review of the phytochemistry and pharmacology of Millettia isoflavonoids is available. Furthermore, the structural diversity of isoflavonoids in Millettia species has rarely been reported. In this review, we comprehensively summarized the structural diversity of Millettia isoflavonoids, the methods used for their extraction and isolation protocols, and their pharmacological properties. According to the literature, 154 structurally diverse isoflavonoids were isolated and reported from the various tissues of nine well-known Millettia species. Prenylated isoflavonoids and rotenoids were the most dominant subclasses of isoflavonoids reported. Other subclasses of reported isoflavonoids include isoflavans, aglycone isoflavones, glycosylated isoflavones, geranylated isoflavonoids, phenylcoumarins, pterocarpans and coumaronochromenes. Although some isolated molecules showed promising pharmacological properties, such as anticancer, anti-inflammatory, estrogenic, and antibacterial activities, others remained untested. In general, this review highlights the potential of Millettia isoflavonoids and could improve their utilization in drug discovery and medicinal use processes. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s11101-022-09845-w.
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Affiliation(s)
- Kebede Taye Desta
- Department of Applied Chemistry, Adama Science and Technology University, P.O. Box: 1888, Adama, Ethiopia
- National Agrobiodiversity Center, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, 54874 Republic of Korea
| | - A. M. Abd El-Aty
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353 China
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211 Egypt
- Department of Medical Pharmacology, Medical Faculty, Ataturk University, 25240 Erzurum, Turkey
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Thiyagarajan R, Begum Z, Seki C, Okuyama Y, Kwon E, Uwai K, Tokiwa M, Tokiwa S, Takeshita M, Nakano H. New small γ-turn type N-primary amino terminal tripeptide organocatalyst for solvent-free asymmetric aldol reaction of various ketones with aldehydes. RSC Adv 2021; 11:38925-38932. [PMID: 35493209 PMCID: PMC9044195 DOI: 10.1039/d1ra08635a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 11/30/2021] [Indexed: 01/18/2023] Open
Abstract
New small γ-turn type N-primary amino terminal tripeptides were synthesized and their functionality as an organocatalyst was examined in the asymmetric aldol reaction of various ketones with different aromatic aldehydes under solvent-free neat conditions to afford the desired chiral anti-aldol products in good to excellent chemical yields, diastereoselectivities and enantioselectivities (up to 99%, up to syn : anti/13 : 87 dr, up to 99% ee). New small γ-turn type N-primary amino terminal tripeptides were applied for the asymmetric aldol reaction of ketones with aldehydes under neat conditions to afford the chiral aldol products (up to 99%, up to syn : anti/13 : 87 dr, up to 99% ee).![]()
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Affiliation(s)
- Rajkumar Thiyagarajan
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan
| | - Zubeda Begum
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan
| | - Chigusa Seki
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan
| | - Yuko Okuyama
- Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-Ku, Sendai 981-8558, Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Sciences,Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-Ku, Sendai 981-8558, Japan
| | - Koji Uwai
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan
| | - Michio Tokiwa
- Tokiwakai Group, 62 Numajiri Tsuduri-Chou Uchigo, Iwaki 973-8053, Japan
| | - Suguru Tokiwa
- Tokiwakai Group, 62 Numajiri Tsuduri-Chou Uchigo, Iwaki 973-8053, Japan
| | | | - Hiroto Nakano
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan
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Chinnabattigalla S, Dakoju RK, Gedu S. Recent advances on the synthesis of flavans, isoflavans, and neoflavans. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4176] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Ravi Kishore Dakoju
- Department of Chemistry Indian Institute of Technology Hyderabad Sangareddy Telangana India
| | - Satyanarayana Gedu
- Department of Chemistry Indian Institute of Technology Hyderabad Sangareddy Telangana India
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Chen Y, Chen WN, Hu N, Banwell MG, Ma C, Gardiner MG, Lan P. Cytotoxicity and Anti-inflammatory Properties of Apigenin-Derived Isolaxifolin. JOURNAL OF NATURAL PRODUCTS 2019; 82:2451-2459. [PMID: 31465218 DOI: 10.1021/acs.jnatprod.9b00113] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The rare flavonoid isolaxifolin, a potent insecticide, has been touted as a potential grain-protecting agent. In order to assess any impact of this natural product on human health and to explore its various other biological properties, we have established a semisynthesis from the simpler but structurally related and more abundant natural product apigenin. The five-step reaction sequence has provided, for the first time, sufficient material for an in-depth evaluation of the cytotoxic properties of the title natural product. The impact of isolaxifolin on certain pro-inflammatory cytokines in murine macrophage RAW 264.7 cells has also been examined. Such studies have revealed that isolaxifolin displays no toxic effects toward normal cells while displaying greater cytotoxicities against certain cancer cell lines than its synthetic precursor apigenin. Furthermore, unlike apigenin, isolaxifolin only reduced NO, TNF-α, and IL-6 secretions in LPS-induced RAW 264.7 cells in a rather modest and dose-independent manner.
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Affiliation(s)
- Yongsheng Chen
- Institute for Advanced and Applied Chemical Synthesis , Jinan University , Guangzhou , 510632 , People's Republic of China
- Department of Food Science and Engineering , Jinan University , Guangzhou , 510632 , People's Republic of China
| | - Wan-Na Chen
- College of Pharmacy , Jinan University , Guangzhou , 510632 , People's Republic of China
| | - Nan Hu
- Institute for Advanced and Applied Chemical Synthesis , Jinan University , Guangzhou , 510632 , People's Republic of China
| | - Martin G Banwell
- Institute for Advanced and Applied Chemical Synthesis , Jinan University , Guangzhou , 510632 , People's Republic of China
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , Australian Capital Territory 2601 , Australia
| | - Chenxi Ma
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , Australian Capital Territory 2601 , Australia
| | - Michael G Gardiner
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , Australian Capital Territory 2601 , Australia
| | - Ping Lan
- Institute for Advanced and Applied Chemical Synthesis , Jinan University , Guangzhou , 510632 , People's Republic of China
- College of Pharmacy , Jinan University , Guangzhou , 510632 , People's Republic of China
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Umeda M, Sakamoto K, Nagai T, Nagamoto M, Ebe Y, Nishimura T. Rhodium-catalyzed asymmetric addition of arylboronic acids to 2H-chromenes leading to 3-arylchromane derivatives. Chem Commun (Camb) 2019; 55:11876-11879. [DOI: 10.1039/c9cc06221a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The Rh-catalyzed enantioselective addition of arylboronic acids to 2H-chromenes proceeded to give 3-arylchromanes with high enantioselectivity.
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Affiliation(s)
- Moeko Umeda
- Department of Chemistry
- Graduate School of Science
- Osaka City University
- Osaka 558-8585
- Japan
| | - Kana Sakamoto
- Department of Chemistry
- Graduate School of Science
- Osaka City University
- Osaka 558-8585
- Japan
| | - Tomotaka Nagai
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Kyoto 606-8502
- Japan
| | - Midori Nagamoto
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Kyoto 606-8502
- Japan
| | - Yusuke Ebe
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Kyoto 606-8502
- Japan
| | - Takahiro Nishimura
- Department of Chemistry
- Graduate School of Science
- Osaka City University
- Osaka 558-8585
- Japan
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Owolabi IA, Subba Reddy U, Chennapuram M, Seki C, Okuyama Y, Kwon E, Uwai K, Tokiwa M, Takeshita M, Nakano H. A new type of amino amide organocatalyzed enantioselective crossed aldol reaction of ketones with aromatic aldehydes. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.07.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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