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Qin H, Xie Q, He L. Diastereoselective synthesis of chroman bearing spirobenzofuranone scaffolds via oxa-Michael/1,6-conjugated addition of para-quinone methides with benzofuranone-type olefins. RSC Adv 2022; 12:16684-16687. [PMID: 35754894 PMCID: PMC9169491 DOI: 10.1039/d2ra03031d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 05/29/2022] [Indexed: 12/17/2022] Open
Abstract
A simple and convenient cyclization of ortho-hydroxyphenyl-substituted para-quinone methides with benzofuran-2-one type active olefins via oxa-Michael/1,6-conjugated addition has been developed, which afforded an easy access to enriched functionalized chroman-spirobenzofuran-2-one scaffolds with good to excellent yields (up to 90%) and diastereoselectivities (up to >19 : 1 dr). This reaction provided an efficient method for constructing desired spirocyclic compounds combining both well-known heterocyclic pharmacophores chroman and benzofuran-2-one. Highly diastereoselective synthesis of spirocyclic compounds combining both well-known heterocyclic pharmacophores chroman and benzofuran-2-one.![]()
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Affiliation(s)
- Hongmei Qin
- College of Chemistry and Materials Engineering, Guiyang University, Guiyang, 550005, P. R. China
| | - Qimei Xie
- College of Chemistry and Chemical Engineering, China West Normal University, Nanchong, 637002, P. R. China
| | - Long He
- College of Chemistry and Materials Engineering, Guiyang University, Guiyang, 550005, P. R. China
- College of Chemistry and Chemical Engineering, China West Normal University, Nanchong, 637002, P. R. China
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2
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Zhou T, Zheng A, Huo L, Li C, Tan H, Wang S, Chen H. Total syntheses of ericifolione and its analogues via a biomimetic inverse-electron-demand Diels-Alder reaction. Chem Commun (Camb) 2021; 58:270-273. [PMID: 34878459 DOI: 10.1039/d1cc06361h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Driven by bioinspiration and appreciation of the structure of ericifolione, a biomimetic tautomerization/intermolecular inverse-electron-demand hetero Diels-Alder reaction cascade sequence promoted by sodium acetate to rapidly construct sterically hindered dihydropyran scaffolds was established, which allowed the first straightforward biomimetic total syntheses of ericifolione and its analogues with high simplicity. Moreover, this methodology set the stage for the preparation of relevant natural products or derivatives.
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Affiliation(s)
- Tingting Zhou
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, People's Republic of China. .,Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China.
| | - Anquan Zheng
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, People's Republic of China. .,Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China.
| | - Luqiong Huo
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China.
| | - Changgeng Li
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, People's Republic of China.
| | - Haibo Tan
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China.
| | - Sasa Wang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China. .,Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Centre for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, People's Republic of China
| | - Huiyu Chen
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, People's Republic of China. .,School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, People's Republic of China
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3
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Li XR, Yan BC, Hu K, He S, Sun HD, Zuo J, Puno PT. Spiro ent-Clerodane Dimers: Discovery and Green Approaches for a Scalable Biomimetic Synthesis. Org Lett 2021; 23:5647-5651. [PMID: 34170713 DOI: 10.1021/acs.orglett.1c01724] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Scospirosins A (1) and B (2), two unprecedented spiro ent-clerodane dimers with 6/6/10/6 and 6/6/6/6/6 ring systems, respectively, were isolated from Isodon scoparius. Their structures were unambiguously established by spectroscopic, X-ray crystallographic, and chemical approaches. A bioinspired protecting-group-free strategy for their synthesis was achieved on a gram scale and featured the application of green methods, including neat reaction, sensitized photooxygenation, and electrochemical oxidation. 2 exhibited selective immunosuppressive activity against the proliferation of T lymphocytes (IC50 = 1.42 μM).
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Affiliation(s)
- Xing-Ren Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Bing-Chao Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Kun Hu
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Shijun He
- Laboratory of Immunopharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jianping Zuo
- Laboratory of Immunopharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pema-Tenzin Puno
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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4
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Métoyer B, Benatrehina A, Rakotondraibe LH, Thouvenot L, Asakawa Y, Nour M, Raharivelomanana P. Dimeric and esterified sesquiterpenes from the liverwort Chiastocaulon caledonicum. PHYTOCHEMISTRY 2020; 179:112495. [PMID: 32847771 DOI: 10.1016/j.phytochem.2020.112495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 07/31/2020] [Accepted: 08/14/2020] [Indexed: 06/11/2023]
Abstract
This is the first chemical investigation of Chiastocaulon caledonicum, an endemic liverwort from New Caledonia. We herein present the isolation of thirteen compounds including seven undescribed sesquiterpenoids, namely four barbatane- and three myltaylane-type sesquiterpenes. The structures of these compounds were elucidated based on the interpretation of their chemical and spectroscopic/spectrometric data. Chiastocaulins A and B are the first examples of dimers based on two myltaylane units. The chemotaxonomic importance and the biosynthesis of the chiastocaulin structure are discussed. Terpenoid dimers formed via a Diels-Alder cyclization are thought to be specific to the Plagiochilaceae family.
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Affiliation(s)
- Benjamin Métoyer
- Institut des Sciences Exactes et Appliquées (ISEA), Université de la Nouvelle-Calédonie, Nouméa, 98851, New Caledonia; Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, 7708514, Japan.
| | - Annecie Benatrehina
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH, 43210, USA.
| | - L Harinantenaina Rakotondraibe
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH, 43210, USA.
| | | | - Yoshinori Asakawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, 7708514, Japan.
| | - Mohammed Nour
- Institut des Sciences Exactes et Appliquées (ISEA), Université de la Nouvelle-Calédonie, Nouméa, 98851, New Caledonia.
| | - Phila Raharivelomanana
- Univ. Polynésie Française, IFREMER, ILM, IRD, EIO UMR 241, BP 6570, F-98702, Faaa, Tahiti, French Polynesia.
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5
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Vurchio C, Cordero FM, Brandi A. Domino Thermal Rearrangement/[4+2] Addition Reactions of an exo
-Methylene Spirocyclopropane Isoxazolidine. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701771] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Carolina Vurchio
- Department of Chemistry “Ugo Schiff”; University of Florence; Via della Lastruccia 13 50019 Sesto Fiorentino (FI) Italy
- Consorzio Interuniversitario Nazionale per le Metodologie e Processi Innovativi di Sintesi (CINMPIS); Bari Italy
| | - Franca M. Cordero
- Department of Chemistry “Ugo Schiff”; University of Florence; Via della Lastruccia 13 50019 Sesto Fiorentino (FI) Italy
- Consorzio Interuniversitario Nazionale per le Metodologie e Processi Innovativi di Sintesi (CINMPIS); Bari Italy
| | - Alberto Brandi
- Department of Chemistry “Ugo Schiff”; University of Florence; Via della Lastruccia 13 50019 Sesto Fiorentino (FI) Italy
- Consorzio Interuniversitario Nazionale per le Metodologie e Processi Innovativi di Sintesi (CINMPIS); Bari Italy
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6
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Uroos M, Pitt P, Harwood LM, Lewis W, Blake AJ, Hayes CJ. Total synthesis of (−)-aritasone via the ultra-high pressure hetero-Diels–Alder dimerisation of (−)-pinocarvone. Org Biomol Chem 2017; 15:8523-8528. [DOI: 10.1039/c7ob02204b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The total synthesis of aritasone via the proposed biosyntheic hetero-Diels–Alder [4 + 2] cyclodimerisation of pinocarvove, has been achieved under ultra-high pressure (19.9 kbar) conditions.
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Affiliation(s)
- Maliha Uroos
- School of Chemistry
- University of Nottingham
- University Park
- Nottingham
- UK
| | - Phillip Pitt
- Chemical Sciences Division
- University of Reading
- Reading
- UK
| | | | - William Lewis
- School of Chemistry
- University of Nottingham
- University Park
- Nottingham
- UK
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7
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Barton NA, Marsh BJ, Lewis W, Narraidoo N, Seymour GB, Fray R, Hayes CJ. Accessing low-oxidation state taxanes: is taxadiene-4(5)-epoxide on the taxol biosynthetic pathway? Chem Sci 2016; 7:3102-3107. [PMID: 29997802 PMCID: PMC6005263 DOI: 10.1039/c5sc03463a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 01/26/2016] [Indexed: 11/21/2022] Open
Abstract
We have shown for the first time that taxadiene (3) can be epoxidised in a regio- and diastereoselective manner to provide taxadiene-4(5)-epoxide (12) as a single diastereoisomer, and that this epoxide can be rearranged to give taxa-4(20),11(12)-dien-5α-ol (4). Furthermore, the epoxide 12 rearranges under acidic conditions to give taxa-4(20),11(12)-dien-5α-ol (4), the known bridged ether OCT (5) and the new oxacyclotaxane (OCT2) 15. Contrary to previous speculation, taxadiene-4(5)-epoxide (12) is susceptible to rearrangement when exposed to an ironIII porphyrin, and these observations justify consideration of epoxide 12 as a chemically competent intermediate on the taxol biosynthetic pathway.
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Affiliation(s)
- Naomi A Barton
- School of Chemistry , University of Nottingham , University Park , NG7 2RD , Nottingham , UK
| | - Benjamin J Marsh
- School of Chemistry , University of Nottingham , University Park , NG7 2RD , Nottingham , UK
| | - William Lewis
- School of Chemistry , University of Nottingham , University Park , NG7 2RD , Nottingham , UK
| | - Nathalie Narraidoo
- Division of Plant and Crop Sciences , School of Biosciences , University of Nottingham , Sutton Bonnington , LE12 5RD , Loughborough , UK . ; ; Tel: +44 (0)115 951 3045
| | - Graham B Seymour
- Division of Plant and Crop Sciences , School of Biosciences , University of Nottingham , Sutton Bonnington , LE12 5RD , Loughborough , UK . ; ; Tel: +44 (0)115 951 3045
| | - Rupert Fray
- Division of Plant and Crop Sciences , School of Biosciences , University of Nottingham , Sutton Bonnington , LE12 5RD , Loughborough , UK . ; ; Tel: +44 (0)115 951 3045
| | - Christopher J Hayes
- School of Chemistry , University of Nottingham , University Park , NG7 2RD , Nottingham , UK
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Ding C, Wang L, Chen H, Wild C, Ye N, Ding Y, Wang T, White MA, Shen Q, Zhou J. ent-Kaurane-based regio- and stereoselective inverse electron demand hetero-Diels-Alder reactions: synthesis of dihydropyran-fused diterpenoids. Org Biomol Chem 2015; 12:8442-52. [PMID: 25225052 DOI: 10.1039/c4ob01040j] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mild and concise approach for the construction of a 3,4-dihydro-2H-pyran ring integrated into the A-ring of the natural product oridonin using an optimized inverse electron demand hetero-Diels-Alder (IED HDA) reaction is reported herein. A self-dimerization of the exocyclic enone installed in the A-ring through a homo-HDA reaction was identified to exclusively give a dimeric ent-kaurane diterpenoid with the spirochroman core. Moreover, efficient cross-HDA cycloadditions of this enone with various vinyl ethers or vinyl sulfides, instead of its own homo-HDA dimerization, were achieved in a regio- and stereoselective manner, thus providing access to novel dihydropyran-fused diterpenoids as potential anticancer agents to overcome chemoresistance.
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Affiliation(s)
- Chunyong Ding
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX 77555, USA.
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