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Liu YF, Yu SS. Survey of natural products reported by Asian research groups in 2022. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2024; 26:399-414. [PMID: 38151899 DOI: 10.1080/10286020.2023.2288939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 11/23/2023] [Indexed: 12/29/2023]
Abstract
The new natural products reported in 2022 in peer-reviewed articles in journals with good reputations were reviewed and analyzed. The advances made by Asian research groups in the field of natural products chemistry in 2022 were summarized. Compounds with unique structural features and/or promising bioactivities originating from Asian natural sources were discussed based on their structural classification.
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Affiliation(s)
- Yan-Fei Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Shi-Shan Yu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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Wu B, Xu C, Chen J, Chen G. Rhizoaspergillin A and Rhizoaspergillinol A, including a Unique Orsellinic Acid-Ribose-Pyridazinone- N-Oxide Hybrid, from the Mangrove Endophytic Fungus Aspergillus sp. A1E3. Mar Drugs 2023; 21:598. [PMID: 37999422 PMCID: PMC10671915 DOI: 10.3390/md21110598] [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: 10/21/2023] [Revised: 11/15/2023] [Accepted: 11/16/2023] [Indexed: 11/25/2023] Open
Abstract
Two new compounds, named rhizoaspergillin A (1) and rhizoaspergillinol A (2), were isolated from the mangrove endophytic fungus Aspergillus sp. A1E3, associated with the fruit of Rhizophora mucronata, together with averufanin (3). The planar structures and absolute configurations of rhizoaspergillinol A (2) and averufanin (3) were established by extensive NMR investigations and quantum-chemical electronic circular dichroism (ECD) calculations. Most notably, the constitution and absolute configuration of rhizoaspergillin A (1) were unambiguously determined by single-crystal X-ray diffraction analysis of its tri-pivaloyl derivative 4, conducted with Cu Kα radiation, whereas those of averufanin (3) were first clarified by quantum-chemical ECD calculations. Rhizoaspergillin A is the first orsellinic acid-ribose-pyridazinone-N-oxide hybrid containing a unique β-oxo-2,3-dihydropyridazine 1-oxide moiety, whereas rhizoaspergillinol A (2) and averufanin (3) are sterigmatocystin and anthraquinone derivatives, respectively. From the perspective of biosynthesis, rhizoaspergillin A (1) could be originated from the combined assembly of three building blocks, viz., orsellinic acid, β-D-ribofuranose, and L-glutamine. It is an unprecedented alkaloid-N-oxide involving biosynthetic pathways of polyketides, pentose, and amino acids. In addition, rhizoaspergillinol A (2) exhibited potent antiproliferative activity against four cancer cell lines. It could dose-dependently induce G2/M phase arrest in HepG2 cells.
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Affiliation(s)
- Binbin Wu
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China;
| | - Chenglong Xu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou 510515, China;
| | - Jianjun Chen
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou 510515, China;
| | - Guangying Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China;
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Krstić G, Saidu MB, Barta A, Vágvölgyi M, Ali H, Zupkó I, Berkecz R, Gallah US, Rédei D, Hohmann J. Anticancer Meroterpenoids from Centrapalus pauciflorus leaves: Chromone- and 2,4-Chromadione-Monoterpene Derivatives. ACS OMEGA 2023; 8:31389-31398. [PMID: 37663471 PMCID: PMC10468835 DOI: 10.1021/acsomega.3c03884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 07/24/2023] [Indexed: 09/05/2023]
Abstract
Eight previously undescribed chromones, named pauciflorins F-M and two 5-methyl-2,4-chromadione derivatives named as pauciflorins N and O, were isolated from the methanol extract of the leaves of Centrapalus pauciflorus (Willd.) H.Rob. together with the known (+)-spiro-ethuliacoumarin. The structures were determined via extensive spectroscopic analyses, including HRESIMS, 1D NMR (1H, 13C JMOD), and 2D NMR (HSQC, HMBC, 1H-1H COSY, and NOESY) experiments. Through an MTT assay, seven isolated compounds were tested for their antiproliferative properties against human adherent breast (MCF-7, MDA-MB-231), cervical (HeLa, SiHa), and ovarian (A2780) cancer cell lines. Pauciflorin F was effective against MCF-7 breast cancer cells, its activity (IC50 5.78 μM) was comparable to that of the reference agent cisplatin (IC50 5.78 μM).
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Affiliation(s)
- Gordana Krstić
- Department
of Pharmacognosy, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary
- University
of Belgrade, Faculty of Chemistry, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Muhammad Bello Saidu
- Department
of Pharmacognosy, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary
| | - Anita Barta
- Department
of Pharmacognosy, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary
| | - Máté Vágvölgyi
- Department
of Pharmacognosy, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary
| | - Hazhmat Ali
- Institute
of Pharmacodynamics and Biopharmacy, University
of Szeged, Eötvös
u. 6, 6720 Szeged, Hungary
| | - István Zupkó
- Institute
of Pharmacodynamics and Biopharmacy, University
of Szeged, Eötvös
u. 6, 6720 Szeged, Hungary
| | - Róbert Berkecz
- Institute
of Pharmaceutical Analysis, University of
Szeged, Somogyi u. 4, 6720 Szeged, Hungary
| | - Umar Shehu Gallah
- Bioresource
Department, National Research Institute
for Chemical Technology (NARICT), Zaria 1052, Nigeria
| | - Dóra Rédei
- Department
of Pharmacognosy, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary
| | - Judit Hohmann
- Department
of Pharmacognosy, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary
- ELKH-USZ
Biologically Active Natural Products Research Group, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary
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Abstract
A personal selection of 32 recent papers is presented, covering various aspects of current developments in bioorganic chemistry and novel natural products, such as daphnepapytone A from Daphne papyracea.
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Affiliation(s)
- Robert A Hill
- School of Chemistry, Glasgow University, Glasgow, G12 8QQ, UK.
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