1
|
Passaglia L, Zanardi MM, Sarotti AM. Study of heavy atom influence on poly-halogenated compounds using DP4/MM-DP4+/DP4+: insights and trends. Org Biomol Chem 2024; 22:2435-2442. [PMID: 38416037 DOI: 10.1039/d3ob02077k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Nuclear magnetic resonance (NMR) spectroscopy complemented by density functional theory (DFT) calculations is a crucial tool for structural elucidation. Nevertheless, the precision of NMR predictions is influenced by the 'heavy atom effect', wherein heavy atoms affect the shielding values of neighboring light atoms (HALA effect). Standard practice in the field involves removing the conflicting signals. However, in the case of polyhalogenated molecules, this is challenging due to the significant amount of information that ends up being lost. In this study the HALA is thoroughly investigated in the context of three leading probability methods: DP4, MM-DP4+, and DP4+. The results show that DP4+ is more sensitive to C-Cl or C-Br signals, which is a consequence of the longer bond lengths computed with DFT. Removing conflicting signals is highly effective in DP4+, but has an uncertain outcome in methods based on molecular mechanics geometries, such as DP4 and MM-DP4+. A detailed investigation of the effect of bond distance on the corresponding chemical shifts has also been conducted.
Collapse
Affiliation(s)
- Lucas Passaglia
- Instituto de Química Rosario (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario 2000, Argentina.
- Instituto de Investigaciones en Ingeniería Ambiental, Química y Biotecnología Aplicada (INGEBIO), Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina, S2002QEO Rosario, Argentina
| | - María M Zanardi
- Instituto de Investigaciones en Ingeniería Ambiental, Química y Biotecnología Aplicada (INGEBIO), Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina, S2002QEO Rosario, Argentina
| | - Ariel M Sarotti
- Instituto de Química Rosario (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario 2000, Argentina.
| |
Collapse
|
2
|
Dembitsky VM. Steroids Bearing Heteroatom as Potential Drugs for Medicine. Biomedicines 2023; 11:2698. [PMID: 37893072 PMCID: PMC10604304 DOI: 10.3390/biomedicines11102698] [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: 09/04/2023] [Revised: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 10/29/2023] Open
Abstract
Heteroatom steroids, a diverse class of organic compounds, have attracted significant attention in the field of medicinal chemistry and drug discovery. The biological profiles of heteroatom steroids are of considerable interest to chemists, biologists, pharmacologists, and the pharmaceutical industry. These compounds have shown promise as potential therapeutic agents in the treatment of various diseases, such as cancer, infectious diseases, cardiovascular disorders, and neurodegenerative conditions. Moreover, the incorporation of heteroatoms has led to the development of targeted drug delivery systems, prodrugs, and other innovative pharmaceutical approaches. Heteroatom steroids represent a fascinating area of research, bridging the fields of organic chemistry, medicinal chemistry, and pharmacology. The exploration of their chemical diversity and biological activities holds promise for the discovery of novel drug candidates and the development of more effective and targeted treatments.
Collapse
Affiliation(s)
- Valery M Dembitsky
- Centre for Applied Research, Innovation and Entrepreneurship, Lethbridge College, 3000 College Drive South, Lethbridge, AB T1K 1L6, Canada
| |
Collapse
|
3
|
Xu XC, Gong Y, Wang J, Yuan YR, Zhao YL. DBU-Promoted Tandem Cyclization of Ynones and Diazo Compounds: Direct Synthesis of Eight-Membered Cyclic Ethers. Org Lett 2023; 25:5750-5755. [PMID: 37498163 DOI: 10.1021/acs.orglett.3c01945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
A novel DBU-promoted tandem cyclization reaction of ynones with diazo compounds as the N-terminal electrophiles has been developed. The reaction provides a simple and efficient method for the synthesis of fused eight-membered oxocino[2,3-c] pyrazoles from readily available acyclic starting materials in a single step. This reaction allows the formation of four new bonds and two rings in a highly regio- and diastereoselective manner, where two adjacent stereocenters are created simultaneously in an atom-economic manner.
Collapse
Affiliation(s)
- Xue-Cen Xu
- Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yue Gong
- Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Jie Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yi-Rong Yuan
- Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yu-Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| |
Collapse
|
4
|
Jiang DB, Wu FY, Cui HL. Recent progress in the oxidative bromination of arenes and heteroarenes. Org Biomol Chem 2023; 21:1571-1590. [PMID: 36723168 DOI: 10.1039/d3ob00019b] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Oxidative bromination has been serving as a powerful tool for the synthesis of bromo-containing molecules, as this bromination strategy features environmental friendliness, high flexibility in reaction system design and wide abundance of bromide sources and oxidants. The past decade has witnessed a large number of efficient oxidative bromination reaction systems and novel brominated aromatics. This review summarizes recent developments in the field of oxidative preparation of bromoarenes and bromoheteroarenes covering from 2012 to 2022.
Collapse
Affiliation(s)
- Da-Bo Jiang
- Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing, 402160, PR China. .,State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China
| | - Fei-Yue Wu
- Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing, 402160, PR China.
| | - Hai-Lei Cui
- Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing, 402160, PR China.
| |
Collapse
|
5
|
Fakee J, Bolton JJ, Le Roes-Hill M, Durrell KA, Antunes E, Beukes DR. Antimicrobial Activity of the Secondary Metabolites Isolated from a South African Red Seaweed, Laurencia corymbosa. Molecules 2023; 28:molecules28052063. [PMID: 36903309 PMCID: PMC10003847 DOI: 10.3390/molecules28052063] [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: 01/23/2023] [Revised: 02/17/2023] [Accepted: 02/19/2023] [Indexed: 02/25/2023] Open
Abstract
South Africa's highly diverse marine biota includes several endemic marine red algae of the Laurencia genus. Cryptic species and morphological variability make the taxonomy of Laurencia plant challenging, and a record of the secondary metabolites isolated from South African Laurencia spp. can be used to assess their chemotaxonomic significance. In addition, the rapid development of resistance against antibiotics, coupled with the inherent ability of seaweeds to resist pathogenic infection, supported this first phycochemical investigation of Laurencia corymbosa J. Agardh. A new tricyclic keto-cuparane (7) and two new cuparanes (4, 5) were obtained alongside known acetogenins, halo-chamigranes, and additional cuparanes. These compounds were screened against Acinetobacter baumannii, Enterococcus faecalis, Escherichia coli, Staphylococcus aureus, and Candida albicans, with 4 exhibiting excellent activity against the Gram-negative A. baumanii (minimum inhibitory concentration (MIC) 1 μg/mL) strain.
Collapse
Affiliation(s)
- Jameel Fakee
- Faculty of Pharmacy, Rhodes University, Makhanda 6140, South Africa
| | - John J. Bolton
- Department of Biological Sciences, University of Cape Town, Rondebosch 7701, South Africa
| | - Marilize Le Roes-Hill
- Applied Microbial and Health Biotechnology Institute, Cape Peninsula University of Technology, Bellville 7535, South Africa
| | - Kim A. Durrell
- Applied Microbial and Health Biotechnology Institute, Cape Peninsula University of Technology, Bellville 7535, South Africa
| | - Edith Antunes
- Department of Chemistry, University of the Western Cape, Bellville 7535, South Africa
| | - Denzil R. Beukes
- School of Pharmacy, University of the Western Cape, Bellville 7535, South Africa
- Correspondence: ; Tel.: +27-21-959-2352
| |
Collapse
|
6
|
Fernandes RA, Gorve DA, Jha AK. Protecting-group-directed stereodivergent Tsuji-Trost cyclization: total synthesis of oxylipids and (+)-petromyroxol. Chem Commun (Camb) 2023; 59:2007-2010. [PMID: 36723058 DOI: 10.1039/d2cc04579f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A stereodivergent protecting-group-directed Tsuji-Trost cyclization for efficient synthesis of both 2,5-cis- and 2,5-trans-disubstituted-THF scaffolds has been realized. The presence of a β-O-silyl group in allyl acetate results in cis-2,5-disubstituted-3-oxygenated THF in a good up to 9 : 1 dr. Alternatively, when the free OH at the β-position is available for acetate co-ordination, it gives a trans-2,5-disubstituted-3-hydroxy THF scaffold almost as a single diastereomer (up to 1 : 0 dr). The THF scaffolds synthesized were carried forward in the total synthesis of oxylipids and (+)-petromyroxol.
Collapse
Affiliation(s)
- Rodney A Fernandes
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
| | - Dnyaneshwar A Gorve
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
| | - Amit K Jha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
| |
Collapse
|
7
|
Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
Collapse
Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
| |
Collapse
|
8
|
Hicks H, Brown DS, Sam Chan HS, Sousa BA, Christensen KE, Burton JW. Total Synthesis and Structure Confirmation of ( E) and ( Z)-Ocellenyne. Org Lett 2022; 24:9174-9178. [PMID: 36508492 PMCID: PMC9791679 DOI: 10.1021/acs.orglett.2c03524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The (E/Z)-ocellenynes are C15 dibrominated Laurencia natural products whose structures have been subject to several reassignments on the basis of extensive NMR analysis, biosynthetic postulates, and DFT calculations. Herein, we report the synthesis of both (E)- and (Z)-ocellenyne, which, in combination with single crystal X-ray diffraction studies, allows their absolute configuration to be established and defines the configuration of the syn-12,13-dibromide as being (S, S) in keeping with their proposed biogenesis from the (6S, 7S)-laurediols.
Collapse
Affiliation(s)
- Harry
B. Hicks
- Chemistry
Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K.
| | - Daniel S. Brown
- Chemistry
Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K.
| | - Hau Sun Sam Chan
- Chemistry
Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K.
| | - Bruno A. Sousa
- Vertex
Pharmaceuticals, 86-88
Jubilee Avenue, Milton Park, Abingdon, OX14 4RW, U.K.
| | - Kirsten E. Christensen
- Chemistry
Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K.
| | - Jonathan W. Burton
- Chemistry
Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K.,
| |
Collapse
|
9
|
Shin I, Jang H, Kwak SY, Park Y, Lee D, Kim H, Kim D. Highly Stereodivergent Construction of a C 2-Symmetric cis, cis- and trans, trans-2,6-Dioxabicyclo[3.3.0]octane Framework by Double Intramolecular Amide Enolate Alkylation: Total Synthesis of (+)-Laurenidificin and (+)-Aplysiallene. Org Lett 2022; 24:8780-8785. [PMID: 36449560 DOI: 10.1021/acs.orglett.2c03494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
The highly stereoselective construction of C2-symmetric cis,cis- and trans,trans-2,6-dioxabicyclo[3.3.0]octane (fused bis-tetrahydrofuran) skeletons 4a and 4b has been accomplished via a novel stereodivergent double intramolecular amide enolate alkylation of common cyclization substrate 5 through the judicious choice of "chelate" versus crown ether-promoted "nonchelate" control. Application of this methodology has provided access to substrate-controlled concise total syntheses of (+)-laurenidificin (3) and (+)-aplysiallene (ent-2), which possess cis/cis- and trans/trans-fused bis-tetrahydrofuran cores, respectively.
Collapse
Affiliation(s)
- Iljin Shin
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea
| | - Hongjun Jang
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea
| | - Soo Yeon Kwak
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea
| | - Youngjik Park
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea
| | - Dongjoo Lee
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea
| | - Hyoungsu Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea
| | - Deukjoon Kim
- The Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea
| |
Collapse
|
10
|
Braddock DC, Duran-Corbera A, Nilforoushan M, Yang Z, He T, Santhakumar G, Bahou KA, Rzepa HS, Woscholski R, White AJP. (±)-Polysiphenol and Other Analogues via Symmetrical Intermolecular Dimerizations: A Synthetic, Spectroscopic, Structural, and Computational Study. JOURNAL OF NATURAL PRODUCTS 2022; 85:2650-2655. [PMID: 36288514 PMCID: PMC9706781 DOI: 10.1021/acs.jnatprod.2c00749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Indexed: 06/16/2023]
Abstract
We report an improved total synthesis of 4,5-dibromo-9,10-dihydrophenanthrene-2,3,6,7-tetraol, (±)-polysiphenol, via intermolecular McMurray dimerization of 5-bromovanillin and subsequent intramolecular oxidative coupling as the key steps. The synthetic route is applicable to 4,5-dichloro- and 4,5-difluoro-halologues (as well as a 4,5-dialkyl-analogue). Distinctive AA'BB' multiplets in their 1H NMR spectra for the dimethylene bridges of the dibromo and dichloro compounds reveal them to be room-temperature stable atropisomers, while for the difluoro compound they present as a singlet. X-ray crystal structure determinations of their tetramethylated synthetic precursors show atropisomeric twist angles of 48°, 46°, and 32°, respectively, with the former representing the largest yet observed in any 4,5-disubstituted-9,10-dihydrophenanthrene. DFT computational studies reveal an unprecedented two-stage atropisomeric interconversion process involving time-independent asynchronous rotations of the dimethylene bridge and the biaryl axis for halologues containing chlorine or bromine, but a more synchronous rotation for the difluoro analogue.
Collapse
|
11
|
Zhai G, Gong R, Lin Y, Zhang M, Li J, Deng Z, Sun J, Chen W, Zhang Z. Structural Insight into the Catalytic Mechanism of Non-Heme Iron Halogenase AdaV in 2′-Chloropentostatin Biosynthesis. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Guoqing Zhai
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, and School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Rong Gong
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, and School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Yaxin Lin
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, and School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Meng Zhang
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, and School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Jiahui Li
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, and School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Zixin Deng
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, and School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Jiazhong Sun
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Wenqing Chen
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
- Abichem Biotech Joint Center for Pharmaceutical Innovation, Wuhan University, Wuhan 430071, China
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, and School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Zhengyu Zhang
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, and School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| |
Collapse
|
12
|
Ishii T, Tahara A, Taba K, Iwatsuki M, Honsho M, Asami Y, Nonaka K, Hanaki H, Teruya T. A new isomaneonene derivative from the red alga Laurencia cf. mariannensis. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2022:1-7. [PMID: 36200370 DOI: 10.1080/10286020.2022.2130266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 09/24/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
Determining the structures of new natural products from marine species not only enriches our understanding of the diverse chemistry of these species, but can also lead to the discovery of compounds with novel and/or important biological activities. Herein, we describe the isolation of isomaneonene C (1), a new halogenated C15 acetogenin, and three known compounds, α-snyderol (2), cis-maneonene D (3), and isomaneonene B (4), from the organic extract obtained from the red alga Laurencia cf. mariannensis collected from Iheya Island, Okinawa, Japan. The structures of these secondary metabolites were elucidated spectroscopically. All compounds were inactive at 30 μg/disc against methicillin-resistant Staphylococcus aureus (MRSA) in combination treatment with a β-lactam drug, meropenem.
Collapse
Affiliation(s)
- Takahiro Ishii
- Department of Bioscience and Biotechnology, Faculty of Agriculture, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903-0213, Japan
| | - Arisu Tahara
- Department of Bioscience and Biotechnology, Faculty of Agriculture, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903-0213, Japan
| | - Kanako Taba
- Department of Bioscience and Biotechnology, Faculty of Agriculture, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903-0213, Japan
| | - Masato Iwatsuki
- Ōmura Satoshi Memorial Institute, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Masako Honsho
- Ōmura Satoshi Memorial Institute, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Yukihiro Asami
- Ōmura Satoshi Memorial Institute, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Kenichi Nonaka
- Ōmura Satoshi Memorial Institute, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Hideaki Hanaki
- Ōmura Satoshi Memorial Institute, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Toshiaki Teruya
- Faculty of Education, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903-0213, Japan
| |
Collapse
|
13
|
Ren X, Chen C, Ye Y, Xu Z, Zhao Q, Luo X, Liu Y, Guo P. Anti-inflammatory compounds from the mangrove endophytic fungus Amorosia sp. SCSIO 41026. Front Microbiol 2022; 13:976399. [PMID: 36212882 PMCID: PMC9533711 DOI: 10.3389/fmicb.2022.976399] [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: 06/23/2022] [Accepted: 07/21/2022] [Indexed: 11/17/2022] Open
Abstract
Three new chlorinated compounds, including two propenylphenol derivatives, chlorophenol A and B (1 and 2), and one benzofuran derivative, chlorophenol C (3), together with 16 known compounds, were isolated from the mangrove endophytic fungus Amorosia sp. SCSIO 41026. 7-Chloro-3,4-dihydro-6,8-dihydroxy-3-methylisocoumarine (4) and 2,4-dichloro-3-hydroxy-5-methoxy-toluene (5) were obtained as new natural products. Their structures were elucidated by physicochemical properties and extensive spectroscopic analysis. Compounds 1, 4, 7, 9, 13, 15, 16, and 19 possessed inhibitory effects against the excessive production of nitric oxide (NO) and pro-inflammatory cytokines in lipopolysaccharide (LPS)-challenged RAW264.7 macrophages without obvious cytotoxicity. Moreover, 5-chloro-6-hydroxymellein (13) further alleviated the pathological lung injury of LPS-administrated mice and protected RAW264.7 macrophages against LPS-induced inflammation through PI3K/AKT pathway in vivo. Our research laid the foundation for the application of compound 13 as a potential anti-inflammatory candidate.
Collapse
Affiliation(s)
- Xue Ren
- Capital Institute of Pediatrics, Beijing, China
| | - Chunmei Chen
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yuxiu Ye
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
| | - Ziying Xu
- Capital Institute of Pediatrics, Beijing, China
| | - Qingliang Zhao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, Center for Molecular Imaging and Translational Medicine, Department of Laboratory Medicine, School of Public Health, Xiamen University, Xiamen, China
| | - Xiaowei Luo
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
- *Correspondence: Xiaowei Luo,
| | - Yonghong Liu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
- Yonghong Liu,
| | - Peng Guo
- Capital Institute of Pediatrics, Beijing, China
- Peng Guo,
| |
Collapse
|
14
|
Sinka V, Cruz DA, Martín VS, Padrón JI. Shortest Enantioselective Total Syntheses of (+)-Isolaurepinnacin and (+)-Neoisoprelaurefucin. Org Lett 2022; 24:5271-5275. [PMID: 35834432 PMCID: PMC9344465 DOI: 10.1021/acs.orglett.2c01769] [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] [Indexed: 11/28/2022]
Abstract
![]()
The shortest enantioselective total syntheses of (+)-isolaurepinnacin
and (+)-neoisoprelaurefucin have been accomplished. These syntheses
were based on a common parallel synthetic strategy using Prins–Peterson
cyclization in their core construction. In only one step, a seven-membered
ring oxacycle with the correct cis-stereochemistry
ring closure and the Δ4 position of the endocyclic
double bond in (+)-isolaurepinnacin was obtained. This unsaturation
was also necessary to accede to the bromodioxabicycle on (+)-neoisoprelaurefucin.
Collapse
Affiliation(s)
- Victoria Sinka
- Instituto de Productos Naturales y Agrobiología (IPNA), CSIC, 38206 Avda. Astrofísico Fco. Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Daniel A Cruz
- Instituto de Productos Naturales y Agrobiología (IPNA), CSIC, 38206 Avda. Astrofísico Fco. Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Víctor S Martín
- Organic Chemistry Department Avda, Universidad de La Laguna, Instituto Universitario de Bio-Orgánica Antonio González (IUBO), Astrofísico Fco. Sánchez 2, 38206 La Laguna, Tenerife, Spain
| | - Juan I Padrón
- Instituto de Productos Naturales y Agrobiología (IPNA), CSIC, 38206 Avda. Astrofísico Fco. Sánchez 3, 38206 La Laguna, Tenerife, Spain
| |
Collapse
|
15
|
Anti-Inflammatory Polyketides from an Alga-Derived Fungus Aspergillus ochraceopetaliformis SCSIO 41020. Mar Drugs 2022; 20:md20050295. [PMID: 35621946 PMCID: PMC9146786 DOI: 10.3390/md20050295] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/20/2022] [Accepted: 04/21/2022] [Indexed: 11/17/2022] Open
Abstract
A new linear polyketide, named aspormisin A (1), together with five known polyketides (2–6), were isolated from the alga-derived fungus Aspergillus ochraceopetaliformis SCSIO 41020. Their structures were elucidated through a detailed comprehensive spectroscopic analysis, as well as a comparison with the literature. An anti-inflammatory evaluation showed that compounds 2, 5, and 6 possessed inhibitory activity against the excessive production of nitric oxide (NO) and pro-inflammatory cytokines in LPS-treated RAW 264.7 macrophages in a dose-dependent manner without cytotoxicity. Further studies revealed that compound 2 was active in blocking the release of pro-inflammatory cytokines (IL-6, MCP-1, and TNF-α) induced by LPS both in vivo and in vitro. Our findings provide a basis for the further development of linear polyketides as promising anti-inflammatory agents.
Collapse
|
16
|
Recent Progresses in the Preparation of Chlorinated Molecules: Electrocatalysis and Photoredox Catalysis in the Spotlight. REACTIONS 2022. [DOI: 10.3390/reactions3020018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Among halogenated molecules, those containing chlorine atoms are fundamental in many areas such as pharmaceuticals, polymers, agrochemicals and natural metabolites. Despite the fact that many reactions have been developed to install chlorine on organic molecules, most of them rely on toxic and hazardous chlorinating reagents as well as harsh conditions. In an attempt to move towards more sustainable approaches, photoredox catalysis and electrocatalysis have emerged as powerful alternatives to traditional methods. In this review, we collect the most recent and significant examples of visible-light- or current-mediated chlorination published in the last five years.
Collapse
|
17
|
Minamida Y, Matsuura H, Ishii T, Miyagi M, Shinjo Y, Sato K, Kamada T, Mihara Y, Togashi I, Sugimoto K, Abe T, Kikuchi N, Suzuki M. New acetogenin katsuurallene from Laurencia saitoi collected from Katsuura, Japan. NATURAL PRODUCTS AND BIOPROSPECTING 2022; 12:10. [PMID: 35266062 PMCID: PMC8907347 DOI: 10.1007/s13659-022-00328-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/12/2021] [Indexed: 06/14/2023]
Abstract
We examined the chemical constitution of the red alga Laurencia saitoi Perestenko, collected from Katsuura, Boso Peninsula, Chiba Prefecture, Japan. This specimen produced a new polyhalogenated acetogenin, named katsuurallene (1), which structure was determined by the spectral methods, along with known diterpene, deoxyparguerol (2) and triterpene, thyrsiferol (3). In this paper we describe the structural elucidation of katsuurallene together with some biological activities.
Collapse
Affiliation(s)
- Yu Minamida
- Advanced Course of Applied Chemistry, National Institute of Technology, Asahikawa College, Shunkodai 2-2-1-6, Asahikawa, Hokkaido, 071-8142, Japan
- Department of Life Science, Graduate School of Engineering Science, Akita University, 1-1 Tegatagakuen-machi, Akita, 010-8502, Japan
| | - Hiroshi Matsuura
- Department of Materials Chemistry, National Institute of Technology, Asahikawa Collage, Shunkodai 2-2-1-6, Asahikawa, Hokkaido, 071-8142, Japan.
| | - Takahiro Ishii
- Department of Biosciences and Biotechnology, Faculty of Agriculture, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa, 903-0213, Japan
| | - Miyu Miyagi
- Department of Biosciences and Biotechnology, Faculty of Agriculture, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa, 903-0213, Japan
| | - Yuto Shinjo
- Department of Biosciences and Biotechnology, Faculty of Agriculture, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa, 903-0213, Japan
| | - Kosuke Sato
- Department of Materials and Life Science, Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Takashi Kamada
- Department of Materials and Life Science, Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Yoshihiro Mihara
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Maeda 7, 15-4-1, Teine-ku, Sapporo, Hokkaido, 006-8590, Japan
| | - Iwao Togashi
- Department of Materials Chemistry, National Institute of Technology, Asahikawa Collage, Shunkodai 2-2-1-6, Asahikawa, Hokkaido, 071-8142, Japan
| | - Keisuke Sugimoto
- Department of Materials Chemistry, National Institute of Technology, Asahikawa Collage, Shunkodai 2-2-1-6, Asahikawa, Hokkaido, 071-8142, Japan
| | - Tsuyoshi Abe
- The Hokkaido University Museum, Hokkaido University, N10 W8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Norio Kikuchi
- Coastal Branch of Natural History Museum and Institute, Chiba,, 123 Yoshio, Katsuura, Chiba, 299-5242, Japan
| | - Minoru Suzuki
- Coastal Branch of Natural History Museum and Institute, Chiba,, 123 Yoshio, Katsuura, Chiba, 299-5242, Japan
| |
Collapse
|
18
|
Chen T, Sun T, Bian Y, Pei Y, Feng F, Chi H, Li Y, Tang X, Sang S, Du C, Chen Y, Chen Y, Sun H. The Design and Optimization of Monomeric Multitarget Peptides for the Treatment of Multifactorial Diseases. J Med Chem 2022; 65:3685-3705. [DOI: 10.1021/acs.jmedchem.1c01456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tingkai Chen
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| | - Tianyu Sun
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| | - Yaoyao Bian
- College of Acupuncture and Massage, College of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China
| | - Yuqiong Pei
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China
| | - Feng Feng
- Food and Pharmaceutical Research Institute, Jiangsu Food and Pharmaceuticals Science College, Huaian 223003, People’s Republic of China
| | - Heng Chi
- Food and Pharmaceutical Research Institute, Jiangsu Food and Pharmaceuticals Science College, Huaian 223003, People’s Republic of China
| | - Yuan Li
- Department of Pharmaceutical Engineering, Jiangsu Food and Pharmaceuticals Science College, Huaian 223005, People’s Republic of China
| | - Xu Tang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China
| | - Shenghu Sang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China
| | - Chenxi Du
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| | - Ying Chen
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| | - Yao Chen
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China
| | - Haopeng Sun
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| |
Collapse
|
19
|
Li CP, Song YP, Wang BG, Ji NY. Sulfurated and iodinated metabolites from the cold-seep fungus Cladosporium cladosporioides 8-1. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153689] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
20
|
Yan J, Zhou Z, He Q, Chen G, Wei H, Xie W. The applications of catalytic asymmetric halocyclization in natural product synthesis. Org Chem Front 2022. [DOI: 10.1039/d1qo01395e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Catalytic asymmetric halocyclization of olefinic substrate has evolved rapidly and been well utilized as a practical strategy for constructing enantioenriched cyclic skeletons in natural product synthesis.
Collapse
Affiliation(s)
- Jiahang Yan
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
| | - Zhiqiang Zhou
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
| | - Qiaoqiao He
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
| | - Guzhou Chen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
| | - Hongbo Wei
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
| | - Weiqing Xie
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
- Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling, Shaanxi 712100, China
| |
Collapse
|
21
|
Zheng S, Guo J, Cheng F, Gao Z, Du L, Meng C, Li S, Zhang X. Cytochrome P450s in algae: Bioactive natural product biosynthesis and light-driven bioproduction. Acta Pharm Sin B 2022; 12:2832-2844. [PMID: 35755277 PMCID: PMC9214053 DOI: 10.1016/j.apsb.2022.01.013] [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: 11/08/2021] [Revised: 01/05/2022] [Accepted: 01/17/2022] [Indexed: 11/16/2022] Open
Abstract
Algae are a large group of photosynthetic organisms responsible for approximately half of the earth's total photosynthesis. In addition to their fundamental ecological roles as oxygen producers and as the food base for almost all aquatic life, algae are also a rich source of bioactive natural products, including several clinical drugs. Cytochrome P450 enzymes (P450s) are a superfamily of biocatalysts that are extensively involved in natural product biosynthesis by mediating various types of reactions. In the post-genome era, a growing number of P450 genes have been discovered from algae, indicating their important roles in algal life-cycle. However, the functional studies of algal P450s remain limited. Benefitting from the recent technical advances in algae cultivation and genetic manipulation, the researches on P450s in algal natural product biosynthesis have been approaching to a new stage. Moreover, some photoautotrophic algae have been developed into “photo-bioreactors” for heterologous P450s to produce high-value added pharmaceuticals and chemicals in a carbon-neutral or carbon-negative manner. Here, we comprehensively review these advances of P450 studies in algae from 2000 to 2021.
Collapse
Affiliation(s)
- Shanmin Zheng
- School of Life Sciences, Shandong University of Technology, Zibo 255000, China
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Jiawei Guo
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Fangyuan Cheng
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Zhengquan Gao
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Lei Du
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Chunxiao Meng
- School of Life Sciences, Shandong University of Technology, Zibo 255000, China
- Corresponding authors. Tel./fax: +86 532 58632496.
| | - Shengying Li
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Corresponding authors. Tel./fax: +86 532 58632496.
| | - Xingwang Zhang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
- Corresponding authors. Tel./fax: +86 532 58632496.
| |
Collapse
|
22
|
Sato K, Kaneko K, Kamekawa T, Taba K, Ishigami S, Wada M, Ishii T, Abe T, Kamada T, Suzuki M. Two New Halogenated Compounds from the Marine Red Alga Laurencia nipponica Yamada from the Kunashiri and Etorofu Islands. Chem Biodivers 2021; 18:e2100397. [PMID: 34302322 DOI: 10.1002/cbdv.202100397] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 07/22/2021] [Indexed: 11/06/2022]
Abstract
The red alga Laurencia nipponica comprises various chemical races distributed relative to the ocean current in Japanese coastal areas. We investigated the chemical compositions and chemical races of L. nipponica distributed from the Kunashiri and Etorofu Islands, the confluence of the Soya warm current and Oya-shio cold current. Two new halogenated secondary metabolites, deacetylneonipponallene (1) and neopacifenol (2), along with four known compounds, deoxyprepacifenol (3), pacifenol (4), halo-chamigrene diether (5), and isolaurallene (6) were isolated from L. nipponica collected at Chikappunai, Kunashiri Island, while Zaimokuiwa (Kunashiri Island) and Sana (Etorofu Island) populations contained 3, 7-hydroxylaurene (7), 2,10-dibromo-3-chloro-9-hydroxy-α-chamigrene (8), and (3Z)-laurefucin (9). The structures of 1 and 2 were established using spectroscopic methods. The chemical races of L. nipponica distributed in this area were divided into 6- and 9-producing races. Interestingly, both races contained 4 as an additional race-index, as well as its derivatives, 2 and 5. To the best of our knowledge, this is the first example of a race comprising a mixture of two race-index compounds, suggesting that the convergence of two currents causes the production of new and diverse chemical races in this species.
Collapse
Affiliation(s)
- Kosuke Sato
- Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Kensuke Kaneko
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, 606-8501, Japan
| | - Tsuyoshi Kamekawa
- Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Kanako Taba
- Faculty of Agriculture, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213, Japan
| | - Shinnosuke Ishigami
- Faculty of Agriculture, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213, Japan
| | - Masahiro Wada
- Faculty of Agriculture, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213, Japan
| | - Takahiro Ishii
- Faculty of Agriculture, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213, Japan
| | - Tsuyoshi Abe
- The Hokkaido University Museum, Hokkaido University, Sapporo, 060-0810, Japan
| | - Takashi Kamada
- Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Minoru Suzuki
- Coastal Branch of Natural History Museum and Institute, Chiba, 123 Yoshio, Katsuura, Chiba, 299-5242, Japan
| |
Collapse
|
23
|
Minamida Y, Matsuura H, Ishii T, Sato K, Kamada T, Kato A, Yamagishi Y, Abe T, Kikuchi N, Suzuki M. Chemical composition of Laurencia spp. collected from the Seto Inland Sea of Japan. BIOCHEM SYST ECOL 2021. [DOI: 10.1016/j.bse.2021.104259] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
24
|
Update on sesquiterpenes from red macroalgae of the Laurencia genus and their biological activities (2015–2020). ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
25
|
Naturally occurring ureidobromophenols with potent antioxidant activities from the marine red alga Rhodomela confervoides. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102312] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
26
|
Nasri S, Bayat M, Mirzaei F. Recent Strategies in the Synthesis of Spiroindole and Spirooxindole Scaffolds. Top Curr Chem (Cham) 2021; 379:25. [PMID: 34002298 DOI: 10.1007/s41061-021-00337-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 05/07/2021] [Indexed: 11/28/2022]
Abstract
Spiroindole and spirooxindole scaffolds are very important spiro-heterocyclic compounds in drug design processes. Significant attention has been directed at obtaining molecules based on spiroindole and spirooxindole derivatives that have bioactivity against cancer cells, microbes, and different types of disease affecting the human body. Due to their inherent three-dimensional nature and ability to project functionalities in all three dimensions, they have become biological targets. Considering reports on spiroindole and spirooxindole-containing scaffolds in the past decades, introducing novel synthetic procedures has been an active research field of organic chemistry for well over a century and will be useful in creating new therapeutic agents. This review summarizes the pharmacological significance of spiroindole and spirooxindole scaffolds and highlights the latest strategies for their synthesis, focusing particularly on the past 2 years with typical examples. The spiroindole and spirooxindoles in this review are divided by the type and ring size of the spirocycle that is fused to indole or oxindole. Summarizing these procedures will be very beneficial for discovering novel therapeutic candidate molecules.
Collapse
Affiliation(s)
- Shima Nasri
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran
| | - Mohammad Bayat
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran.
| | - Faezeh Mirzaei
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran
| |
Collapse
|
27
|
Qi SS, Yin H, Wang YF, Wang CJ, Han HT, Man TT, Xu DQ. Catalytic Asymmetric Conjugate Addition/Hydroalkoxylation Sequence: Expeditious Access to Enantioenriched Eight-Membered Cyclic Ether Derivatives. Org Lett 2021; 23:2471-2476. [PMID: 33733793 DOI: 10.1021/acs.orglett.1c00392] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A sequential enantioselective conjugate addition/hydroalkoxylation between in situ generated ortho-quinomethanes and ynones by combining bifunctional squaramide and DBU catalysis has been developed. A variety of eight-membered cyclic ethers with two contiguous tertiary stereocenters were obtained in high yields with excellent stereoselectivities. This reaction not only provides a new strategy for constructing enantioenriched eight-membered cyclic ethers but also demonstrates the practicability of ynones as C4-syntons for the synthesis of chiral medium-membered rings.
Collapse
Affiliation(s)
- Suo-Suo Qi
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Hao Yin
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Yi-Feng Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Chao-Jie Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Hong-Te Han
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Tong-Tong Man
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Dan-Qian Xu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| |
Collapse
|
28
|
Li HL, Yang SQ, Li XM, Li X, Wang BG. Structurally diverse alkaloids produced by Aspergillus creber EN-602, an endophytic fungus obtained from the marine red alga Rhodomela confervoides. Bioorg Chem 2021; 110:104822. [PMID: 33770672 DOI: 10.1016/j.bioorg.2021.104822] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 03/07/2021] [Accepted: 03/08/2021] [Indexed: 12/31/2022]
Abstract
Thirteen alkaloids, which include three new diketopiperazines, namely, 3-hydroxyprotuboxepin K (4), 3,15-dehydroprotuboxepin K (5), and versiamide A (6), together with ten known alkaloid derivatives (1-3 and 7-13), were isolated from the marine red algal-derived fungus Aspergillus creber EN-602. Versiamide A (6) represents the first example of a naturally occurring quinazolinone alkaloid with a diketopiperazine ring that is derived from phenylalanine (Phe) and leucine (Leu). The structures of these compounds were elucidated by detailed interpretation of their 1D/2D NMR spectroscopic and mass spectrometric data, while the absolute configurations of compounds 1-6 were established on the basis of X-ray crystallographic analysis and time-dependent density functional (TDDFT) calculations of the ECD spectra. Compounds 1, 2, and 4 exhibited inhibitory activity against the angiotensin converting enzyme (ACE) with IC50 values of 11.2, 16.0, and 22.4 μM, respectively, and compounds 5 and 6 inhibited various aquatic bacteria with MIC values that ranged from 8 to 64 μg/mL. The intermolecular interactions and potential binding sites between compounds 1-6 and ACE were investigated via molecular docking simulations.
Collapse
Affiliation(s)
- Hong-Lei Li
- CAS and Shandong Province Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China; Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao 266237, People's Republic of China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China.
| | - Sui-Qun Yang
- CAS and Shandong Province Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China; Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao 266237, People's Republic of China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China
| | - Xiao-Ming Li
- CAS and Shandong Province Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China; Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao 266237, People's Republic of China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China
| | - Xin Li
- CAS and Shandong Province Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China; Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao 266237, People's Republic of China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China
| | - Bin-Gui Wang
- CAS and Shandong Province Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China; Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao 266237, People's Republic of China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, People's Republic of China.
| |
Collapse
|
29
|
Jang H, Kwak SY, Lee D, Alegre-Requena JV, Kim H, Paton RS, Kim D. Asymmetric Total Synthesis and Determination of the Absolute Configuration of (+)-Srilankenyne via Sequence-Sensitive Halogenations Guided by Conformational Analysis. Org Lett 2021; 23:1321-1326. [PMID: 33534589 DOI: 10.1021/acs.orglett.0c04303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This first asymmetric total synthesis of (+)-srilankenyne (1), a halogenated C15 tetrahydropyran acetogenin isolated from Aplysia oculifera, features a sequence-sensitive process guided by conformational analysis to solve the challenging problem of introducing halogens. A competing semipinacol rearrangement during the installation of C(12)-bromide was suppressed by our A1,3 strain-controlled bromination protocol with support from X-ray crystallographic and computational studies. The C(10)-chloride was then placed by the Nakata chloromesylate-mediated chlorination.
Collapse
Affiliation(s)
- Hongjun Jang
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea
| | - Soo Yeon Kwak
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea
| | - Dongjoo Lee
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea
| | - Juan V Alegre-Requena
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Hyoungsu Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea
| | - Robert S Paton
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Deukjoon Kim
- The Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea
| |
Collapse
|
30
|
Shi ZZ, Liu XH, Li XN, Ji NY. Antifungal and Antimicroalgal Trichothecene Sesquiterpenes from the Marine Algicolous Fungus Trichoderma brevicompactum A-DL-9-2. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:15440-15448. [PMID: 33332117 DOI: 10.1021/acs.jafc.0c05586] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Eight new trichothecene derivatives, trichodermarins G-N (1-8), and two new cuparene derivatives, trichocuparins A (9) and B (10), as well as six known trichothecenes (11-16) were isolated from the fungal strain Trichoderma brevicompactum A-DL-9-2 obtained from the inner tissue of the marine red alga Chondria tenuissima. The structures and relative configurations of 1-10 were assigned by NMR and MS data, and the absolute configurations of 1, 2, and 9 were established by X-ray diffraction. Compound 8 features an aminosugar unit bond to the trichothecene framework for the first time, while 9 and 10 represent the first occurrence of cuparene sesquiterpenes in Trichoderma. All the isolates were assayed for growth inhibition of five phytopathogenic fungi (Botrytis cinerea, Cochliobolus miyabeanus, Fusarium oxysporum f. sp. cucumerium, Fusarium oxysporum f. sp. niveum, and Phomopsis asparagi) and four marine phytoplankton species (Amphidinium carterae, Heterocapsa circularisquama, Heterosigma akashiwo, and Prorocentrum donghaiense). Several of them exhibited significant inhibitory activities against the fungi and phytoplankton tested of which trichodermin (12) showed the highest antifungal and antimicroalgal activities with MIC and IC50 values being 4.0 and 0.82 μg/mL, respectively.
Collapse
Affiliation(s)
- Zhen-Zhen Shi
- Yantai Institute of Coastal Zone Research, Center for Ocean Mega-Science, Chinese Academy of Sciences, Yantai 264003, People's Republic of China
| | - Xiang-Hong Liu
- Yantai Institute of Coastal Zone Research, Center for Ocean Mega-Science, Chinese Academy of Sciences, Yantai 264003, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Xiao-Nian Li
- Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Nai-Yun Ji
- Yantai Institute of Coastal Zone Research, Center for Ocean Mega-Science, Chinese Academy of Sciences, Yantai 264003, People's Republic of China
| |
Collapse
|
31
|
Li X, Wang L, Jia X, Guo C, Li C, Zhang J, Shi D. An UHPLC-TOF-MS method for quantifying novel brominated anticancer compound bromophenol-thiosemicarbazone hybrid and its application to in vivo pharmacokinetic study. J Anal Sci Technol 2020. [DOI: 10.1186/s40543-020-00210-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Bromophenol-thiosemicarbazone hybrid was a novel synthetic brominated anticancer compound with two bromine atoms. Bromophenol-thiosemicarbazone hybrid showed considerable selective inhibitory activity against PARP1 (IC50 = 29.5 nmol/L). UHPLC-TOF-MS was used to establish a new method to quantify bromophenol-thiosemicarbazone hybrid bio-samples for indispensable quantitation analysis in further extensive pre-clinical studies.
Methods
Chromatographic and mass spectrometry parameters were optimized for quantitative method establishment. Improved protein-precipitated method was applied to the extraction of bromophenol-thiosemicarbazone hybrid in rat plasma samples. Furthermore, this proposed method was applied to an intravenous bolus dose to male rats.
Results
Mobile phase was consisted of water for A and acetonitrile for B with 25 mmol/L formic acid in both A and B. The flow rate was 0.30 mL/min, and the run time of bromophenol-thiosemicarbazone hybrid was 4.0 min. A Thermo Fisher Accucore 2.6 μm C18 column (50 × 2.1 mm i.d.; San Jose, USA) was used for chromatographic separation. High resolution mass spectrometry was used to quantify samples by exact mass number of compound which was operated on negative ionization mode. Linear dynamic range of the established method was widely with 13.7–10000 nmol/L. Pharmacokinetics properties of bromophenol-thiosemicarbazone hybrid were shown in the results.
Conclusion
This method was reliable and reproducible from sample preparation to analysis and storage stability under the investigated conditions. It may be useful for analysis of halogenated compounds and brominated compounds in ultra-performance liquid chromatography-mass spectrometry.
Collapse
|
32
|
Protein kinases as targets for developing anticancer agents from marine organisms. Biochim Biophys Acta Gen Subj 2020; 1865:129759. [PMID: 33038451 DOI: 10.1016/j.bbagen.2020.129759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 09/03/2020] [Accepted: 10/03/2020] [Indexed: 01/11/2023]
Abstract
Protein kinases play a fundamental role in the intracellular transduction because of their ability to phosphorylate plethora of proteins. Over the past three decades, numerous protein kinase inhibitors have been identified and are being used clinically successfully. The biodiversity of marine organisms provides a rich source for the discovery and development of novel anticancer agents in the treatment of human malignancies and a lot of bioactive ingredients from marine organisms display anticancer effects by affecting the protein kinases-mediated pathways. In the present mini-review, anticancer compounds from marine source were reviewed and discussed in context of their targeted pathways associated with protein kinases and the progress of these compounds as anticancer agents in recent five years were emphasized. The molecular entities and their modes of actions were presented. We focused on protein kinases-mediated signaling pathways including PI3K/Akt/mTOR, p38 MAPK, and EGFR. The marine compounds targeting special pathways of protein kinases were highlighted. We have also discussed the existing challenges and prospects related to design and development of novel protein kinase inhibitors from marine sources.
Collapse
|
33
|
Chan HSS, Thompson AL, Christensen KE, Burton JW. Forwards and backwards - synthesis of Laurencia natural products using a biomimetic and retrobiomimetic strategy incorporating structural reassignment of laurefurenynes C-F. Chem Sci 2020; 11:11592-11600. [PMID: 34094406 PMCID: PMC8162873 DOI: 10.1039/d0sc04120c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 09/25/2020] [Indexed: 11/26/2022] Open
Abstract
Laurefurenynes C-F are four natural products isolated from Laurencia species whose structures were originally determined on the basis of extensive nuclear magnetic resonance experiments. On the basis of a proposed biogenesis, involving a tricyclic oxonium ion as a key intermediate, we have reassigned the structures of these four natural products and synthesized the four reassigned structures using a biomimetic approach demonstrating that they are the actual structures of the natural products. In addition, we have developed a synthesis of the enantiomers of the natural products laurencin and deacetyllaurencin from the enantiomer of (E)-laurefucin using an unusual retrobiomimetic strategy. All of these syntheses have been enabled by the use of tricyclic oxonium ions as pivotal synthetic intermediates.
Collapse
Affiliation(s)
- Hau Sun Sam Chan
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Amber L Thompson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Kirsten E Christensen
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Jonathan W Burton
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| |
Collapse
|
34
|
Minamida Y, Matsuura H, Vairappan CS, Suttikarn S, Abe T, Suzuki M. Teanol, a new brominated sesquiterpene from the Thailand Laurencia mariannensis. BIOCHEM SYST ECOL 2020. [DOI: 10.1016/j.bse.2020.104093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
35
|
Ishii T, Miyagi M, Shinjo Y, Minamida Y, Matsuura H, Abe T, Kikuchi N, Suzuki M. Two new brominated C 15-acetogenins from the red alga Laurencia japonensis. Nat Prod Res 2020; 34:2787-2793. [DOI: 10.1080/14786419.2019.1590712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Takahiro Ishii
- Department of Biosciences and Biotechnology, Faculty of Agriculture, University of the Ryukyus , Nishihara , Okinawa , Japan
| | - Miyu Miyagi
- Department of Biosciences and Biotechnology, Faculty of Agriculture, University of the Ryukyus , Nishihara , Okinawa , Japan
| | - Yuto Shinjo
- Department of Biosciences and Biotechnology, Faculty of Agriculture, University of the Ryukyus , Nishihara , Okinawa , Japan
| | - Yu Minamida
- Department of Materials Chemistry, National Institute of Technology, Asahikawa College , Asahikawa , Hokkaido , Japan
| | - Hiroshi Matsuura
- Department of Materials Chemistry, National Institute of Technology, Asahikawa College , Asahikawa , Hokkaido , Japan
| | - Tsuyoshi Abe
- The Hokkaido University Museum, Hokkaido University , Sapporo , Hokkaido , Japan
| | - Norio Kikuchi
- Coastal Branch of Natural History Museum and Institute , Katsuura , Chiba , Japan
| | - Minoru Suzuki
- Coastal Branch of Natural History Museum and Institute , Katsuura , Chiba , Japan
| |
Collapse
|
36
|
Iron- or copper-catalyzed cascade chloromethylation of activated alkenes: Efficient access to chlorinated oxindoles. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152316] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
37
|
Hu ZB, Yu XQ, Wang B, Liu AH, Zhao TS, Guo YW, Huang HL, Mao SC. Structurally diverse halosesquiterpenoids from the red alga Laurencia composita Yamada. Fitoterapia 2020; 146:104716. [PMID: 32866541 DOI: 10.1016/j.fitote.2020.104716] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/24/2020] [Accepted: 08/25/2020] [Indexed: 11/19/2022]
Abstract
A phytochemical investigation on the MeOH extract of the red alga Laurencia composita Yamada led to the discovery of six new highly halogenated sesquiterpenoids, including two bisabolane-type sesquiterpenoids (1 and 2), one nerolidol derivative (7), and three chamigrane-type sesquiterpenoids (9, 10, and 18), together with 13 known sesquiterpenoids. Their structures, including relative configuration, were elucidated by extensive spectroscopic analysis, and by comparison with data for related known compounds. The absolute configuration at C-10 of laurecomposin A (1) was determined by the modified Mosher's method. Halonerolidol (7) is the first naturally occurring halogenated nerolidol derivative, while compositacin L (9) represents the third example of chamigranes having a C-10 carbonyl group. Antifungal, antibacterial, and receptor tyrosine kinase inhibitory activities of these isolates were evaluated. The results showed that compounds 1-3 and 5 exhibited significant antifungal activity against Microsporum gypseum (Cmccfmza) with MIC values of 4, 8, 8, and 4 μg/mL, respectively. Additionally, compounds 1-3 and 5 also displayed promising antibacterial activity against Gram-positive bacteria Staphylococcus aureus Newman strain with MIC values ranging from 10.9 to 26.8 μg/mL.
Collapse
Affiliation(s)
- Zhi-Biao Hu
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Xiao-Qing Yu
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Bin Wang
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Ai-Hong Liu
- Center of Analysis and Testing, Nanchang University, Nanchang 330047, People's Republic of China
| | - Tian-Sheng Zhao
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Yue-Wei Guo
- State key laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, People's Republic of China
| | - Hui-Lian Huang
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, People's Republic of China
| | - Shui-Chun Mao
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China.
| |
Collapse
|
38
|
Fernandes RA, Pathare RS, Gorve DA. Advances in Total Synthesis of Some 2,3,5-Trisubstituted Tetrahydrofuran Natural Products. Chem Asian J 2020; 15:2815-2837. [PMID: 32702201 DOI: 10.1002/asia.202000753] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/21/2020] [Indexed: 11/06/2022]
Abstract
2,3,5-Trisubstituted tetrahydrofuran moiety is ubiquitous in natural products. These have served as appealing candidates for total synthesis due to their varied bio- and pharmaceutical activities. This tutorial review delineates the ingenious efforts by many researchers in the total synthesis of selected natural products based on a common 2,3,5-trisubstituted tetrahydrofuran core structure. Many of the syntheses display nuanced interplay between new methods and the ingenuity of planned strategies achieved through catalysis or cascade chemistry. In some cases, the chiron approach has come quite handy, wherein the structural features and the stereochemistry in select molecules could map well with naturally available starting materials. This compilation also aims to enhance the diversity space based on these natural products and further interest in sustainable total synthesis.
Collapse
Affiliation(s)
- Rodney A Fernandes
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, Maharashtra, India
| | - Ramdas S Pathare
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, Maharashtra, India
| | - Dnyaneshwar A Gorve
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, Maharashtra, India
| |
Collapse
|
39
|
Satam N, Nemu S, Gururaja GN, Namboothiri INN. Substrate-oriented selectivity in the Mg-mediated conjugate addition of bromoform to electron-deficient alkenes. Org Biomol Chem 2020; 18:5697-5707. [PMID: 32663237 DOI: 10.1039/d0ob00599a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The Mg-mediated conjugate addition of bromoform to a variety of electron-deficient alkenes has been investigated. In the case of nitrodienes and dibenzylideneacetones, tribromomethylated products were isolated, whereas spiro-cyclopropanated products were obtained with cyclic dibenzylideneketones and 3-olefinic oxindoles. The spiro-cyclopropyl ketones derived from cyclic dibenzylideneketones were successfully transformed into fused furans via the Cloke-Wilson rearrangement.
Collapse
Affiliation(s)
- Nishikant Satam
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
| | - Saumyadip Nemu
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
| | | | | |
Collapse
|
40
|
Bidleman TF, Andersson A, Haglund P, Tysklind M. Will Climate Change Influence Production and Environmental Pathways of Halogenated Natural Products? ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:6468-6485. [PMID: 32364720 DOI: 10.1021/acs.est.9b07709] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Thousands of halogenated natural products (HNPs) pervade the terrestrial and marine environment. HNPs are generated by biotic and abiotic processes and range in complexity from low molecular mass natural halocarbons (nHCs, mostly halomethanes and haloethanes) to compounds of higher molecular mass which often contain oxygen and/or nitrogen atoms in addition to halogens (hHNPs). nHCs have a key role in regulating tropospheric and stratospheric ozone, while some hHNPs bioaccumulate and have toxic properties similar those of anthropogenic-persistent organic pollutants (POPs). Both chemical classes have common sources: biosynthesis by marine bacteria, phytoplankton, macroalgae, and some invertebrate animals, and both may be similarly impacted by alteration of production and transport pathways in a changing climate. The nHCs scientific community is advanced in investigating sources, atmospheric and oceanic transport, and forecasting climate change impacts through modeling. By contrast, these activities are nascent or nonexistent for hHNPs. The goals of this paper are to (1) review production, sources, distribution, and transport pathways of nHCs and hHNPs through water and air, pointing out areas of commonality, (2) by analogy to nHCs, argue that climate change may alter these factors for hHNPs, and (3) suggest steps to improve linkage between nHCs and hHNPs science to better understand and predict climate change impacts.
Collapse
Affiliation(s)
- Terry F Bidleman
- Department of Chemistry, Umeå University (UmU), SE-901 87 Umeå, Sweden
| | - Agneta Andersson
- Department of Ecology & Environmental Science, UmU, SE-901 87 Umeå, Sweden
- Umeå Marine Sciences Centre, UmU, SE-905 71 Hörnefors, Sweden
| | - Peter Haglund
- Department of Chemistry, Umeå University (UmU), SE-901 87 Umeå, Sweden
| | - Mats Tysklind
- Department of Chemistry, Umeå University (UmU), SE-901 87 Umeå, Sweden
| |
Collapse
|
41
|
Khatua A, Pal S, Bisai V. Formal Total Syntheses of (+)- and (-)- ar
-Macrocarpene via Rh (I)
-BINAP Catalyzed Conjugate Addition. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Arindam Khatua
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road, Bhauri 462 066 Bhopal - Madhya Pradesh India
| | - Souvik Pal
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road, Bhauri 462 066 Bhopal - Madhya Pradesh India
| | - Vishnumaya Bisai
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road, Bhauri 462 066 Bhopal - Madhya Pradesh India
- Department of Chemistry; Indian Institute of Science Education and Research Tirupati; Transit Campus, Mangalam, Karkambadi Road 517 507 Tirupati - Andhra Pradesh India
- Department of Chemical Sciences; Indian Institute of Science Education and Research Berhampur; Transit Campus, Engg. School Junction (Govt. ITI Building) 760 010 Berhampur - Odisha India
| |
Collapse
|
42
|
|
43
|
Heravi MM, Janati F, Zadsirjan V. Applications of Knoevenagel condensation reaction in the total synthesis of natural products. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02586-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
44
|
Newly reported alkaloids produced by marine-derived Penicillium species (covering 2014-2018). Bioorg Chem 2020; 99:103840. [PMID: 32305696 DOI: 10.1016/j.bioorg.2020.103840] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 02/07/2020] [Accepted: 04/07/2020] [Indexed: 12/20/2022]
Abstract
Alkaloids, especially heterocyclic alkaloids, have received remarkable attention due to their intriguing structures and potential pharmacological activities. The marine fungi residing in extreme environmental conditions are among the richest sources of these basic nitrogen-containing compounds. Fungal species belonging to the genus Penicillium have been studied worldwide for their biosynthetic potential for generating bioactive alkaloids. This paper offers a systematic review of the newly reported alkaloids produced by marine-derived Penicillium species over the past five years (covering the literature from the beginning of 2014 through the end of 2018) and describes the structural diversity, biological activities, and plausible biosynthetic pathway of the reported compounds. A total of 106 alkaloids and 81 references are included in this review, which is expected to be beneficial for drug development and biosynthesis in the near future.
Collapse
|
45
|
|
46
|
Economically important red algae resources along the Chinese coast: History, status, and prospects for their utilization. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101817] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
47
|
Chen R, Yang S, Zhang Y. Recent progress in the total synthesis of marine brominated sesquiterpene aplydactone. Org Biomol Chem 2020; 18:1036-1045. [PMID: 31961356 DOI: 10.1039/c9ob02642h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aplydactone is a brominated sesquiterpene isolated from the sea hare Aplysia dactylomela. Structurally, it features a complex cage-like skeleton containing a highly strained tricyclic-[4.2.0.03,8]-4-decanone system. Its unique structural features have fascinated many synthetic chemists. In this review, the synthetic efforts towards aplydactone in the last five years are summarized in two categories including nonbiomimetic synthesis and biomimetic synthesis based on the core synthetic strategy. These syntheses set a classical and instructive example for the syntheses of other marine natural products.
Collapse
Affiliation(s)
- Renzhi Chen
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China.
| | - Sihan Yang
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China.
| | - Yandong Zhang
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China.
| |
Collapse
|
48
|
Taylor CA, Zhang YA, Snyder SA. The enantioselective total synthesis of laurendecumallene B. Chem Sci 2020; 11:3036-3041. [PMID: 34122807 PMCID: PMC8157515 DOI: 10.1039/c9sc06116a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 02/05/2020] [Indexed: 02/04/2023] Open
Abstract
For decades, the Laurencia family of halogenated C15-acetogenins has served as a valuable testing ground for the prowess of chemical synthesis, particularly as it relates to generating functionalized 8-membered bromoethers. Herein, we show that a readily modified and predictable approach that generates such rings and an array of attendant stereocenters via a bromenium-induced cyclization/ring-expansion process can be used to synthesize laurendecumallene B and determine the configuration of two of its previously unassigned stereocenters. In particular, this work highlights how the use of the bromenium source BDSB (Et2SBr·SbCl5Br) in non-conventional solvents is essential in generating much of the target's complexity in optimal yields and stereoselectivity. Moreover, the final structural assignment of laurendecumallene B reveals that it has one element of bromine-based chirality that, to the best of our knowledge, is not shared with any other member of the class.
Collapse
Affiliation(s)
- Cooper A Taylor
- Department of Chemistry, University of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
| | - Yu-An Zhang
- Department of Chemistry, University of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
| | - Scott A Snyder
- Department of Chemistry, University of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
| |
Collapse
|
49
|
Khatua A, Roy A, Bisai V. Catalytic asymmetric total syntheses of sesquiterpenoids, (+)- and ( )-ar-macrocarpene. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
50
|
Chen H, Qian Y, Jia H, Yu Y, Zhang H, Shen J, Zhao S. Synthesis and pharmacological evaluation of naftopidil-based arylpiperazine derivatives containing the bromophenol moiety. Pharmacol Rep 2020; 72:1058-1068. [PMID: 32048266 DOI: 10.1007/s43440-019-00041-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 07/19/2019] [Accepted: 09/25/2019] [Indexed: 12/26/2022]
Abstract
BACKGROUND Prostate cancer (PCa) is the most common malignancy in men and in the absence of any effective treatments available. METHODS For the development of potential anticancer agents, 24 kinds of naftopidil-based arylpiperazine derivatives containing the bromophenol moiety were synthesized and characterized by using spectroscopic methods. Their pharmacological activities were evaluated against human PCa cell lines (PC-3 and LNCaP) and a1-adrenergic receptors (a1-ARs; α1a, α1b, and α1d-ARs). The structure-activity relationship of these designed arylpiperazine derivatives was rationally explored and discussed. RESULTS Among these derivatives, 3c, 3d, 3h, 3k, 3o, and 3s exhibited the most potent activity against the tested cancer cells, and some derivatives with potent anticancer activities exhibited better a1-AR subtype selectivity than others did (selectivity ratio > 10). CONCLUSION This work provided a potential lead compound for the further development of anticancer agents for PCa therapy.
Collapse
Affiliation(s)
- Hong Chen
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.,Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, 471934, China
| | - Yuna Qian
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, School of Ophthalmology and Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325035, China.,Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Science, Wenzhou, 325001, China
| | - Huixia Jia
- Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, 471934, China
| | - Yuzhong Yu
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Haibo Zhang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jianliang Shen
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, School of Ophthalmology and Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325035, China. .,Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Science, Wenzhou, 325001, China.
| | - Shanchao Zhao
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| |
Collapse
|