1
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Wei K, Zheng X, Zhang H. Recent applications of dioxinone derivatives for macrocyclic natural product and terpenoid synthesis. Front Chem 2022; 10:1030541. [PMID: 36578354 PMCID: PMC9790985 DOI: 10.3389/fchem.2022.1030541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 12/01/2022] [Indexed: 12/14/2022] Open
Abstract
Dioxinone derivatives, a class of acetoacetate derivatives, have attracted widespread attention because of their multiple reactive sites, high reactivity, unique chemical properties, and potential synthetic applications. The dioxinone group is also stable under a wide range of reaction conditions, including strong acids, as well as a variety of transition-metal-catalysed processes, such as olefin metathesis and Pd-mediated cross-coupling. The inherent reactivity and diverse applications of dioxinones make them valuable reactive intermediates in organic synthesis. The conversion of dioxinones to acylketenes and their subsequent nucleophilic capture is also an excellent strategy for synthesising β-keto acid derivatives, which can be applied even in complex molecular synthesis. This review focuses on the recent advances in the application of dioxinones in synthetic method research and the total synthesis of natural products, highlighting the exceptional utility of these synthetic methodologies in the construction of macrocyclic cores and terpenoid skeletons. In particular, successful transformations of dioxinone fragments are discussed.
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Affiliation(s)
- Kai Wei
- Henan Engineering Research Center of Funiu Mountain’s Medical Resources Utilization and Molecular Medicine, School of Medical Sciences, Pingdingshan University, Pingdingshan, Henan, China,Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research and Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan, China,*Correspondence: Kai Wei, ; Hongbin Zhang,
| | - Xinhua Zheng
- Henan Engineering Research Center of Funiu Mountain’s Medical Resources Utilization and Molecular Medicine, School of Medical Sciences, Pingdingshan University, Pingdingshan, Henan, China
| | - Hongbin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research and Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan, China,*Correspondence: Kai Wei, ; Hongbin Zhang,
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2
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Phatake RS, Averdunk A, Würtele C, Gellrich U. Piers’ Borane-Catalyzed Dimerization of Arylallenes via Transborylation: A Synthetic and Mechanistic Study. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04605] [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)
- Ravindra S. Phatake
- Institut für Organische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 17, 35392Gießen, Germany
| | - Arthur Averdunk
- Institut für Organische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 17, 35392Gießen, Germany
| | - Christian Würtele
- Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 17, 35392Gießen, Germany
| | - Urs Gellrich
- Institut für Organische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 17, 35392Gießen, Germany
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3
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Wang YP, Fang K, Tu YQ, Yin JJ, Zhao Q, Ke T. An efficient approach to angular tricyclic molecular architecture via Nazarov-like cyclization and double ring-expansion cascade. Nat Commun 2022; 13:2335. [PMID: 35484150 PMCID: PMC9050659 DOI: 10.1038/s41467-022-29947-5] [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: 10/11/2021] [Accepted: 03/17/2022] [Indexed: 01/13/2023] Open
Abstract
A modular and efficient method for constructing angular tri-carbocyclic architectures containing quaternary carbon center(s) from 1,3-dicycloalkylidenyl ketones is established, which involves an unconventional synergistic cascade of a Nazarov cyclization and two ring expansions. It features high selectivity, mild conditions and convenient operation, wide scope and easy availability of substrate. Substitution with R1 and R2 at the 4πe-system with electron-donating group favors this reaction, while that with electron-withdrawing group or proton disfavors. The electron-donating group as R1 directs the initial ring expansion at its own site, while the p-π- or n-π- associated substituent as R2 favors selectively the later ring expansion near its location because of the beneficial maintenance of an original conjugated system. The stereoselectivity has proved to be governed by either the steric effect of R3 and R4 at the expanded rings, or the migration ability of the migrating atom. Density Functional Theory calculation suggests the initial Nazarov cyclization would be the rate-determining step. A racemic total synthesis of the natural (±)-waihoensene is realized in 18 steps by use of this methodology.
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Affiliation(s)
- Yun-Peng Wang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Kun Fang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Yong-Qiang Tu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China. .,State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China.
| | - Jun-Jie Yin
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China.,A training graduate student from Harbin Institute of Technology, Shenzhen, 518055, China
| | - Qi Zhao
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Tian Ke
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, China
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4
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Li G, Li H, Tang W, Yao LG, Liang LF, Guo YW. Further polyoxygenated cembranoids from South China Sea soft coral Sarcophyton ehrenbergi. Bioorg Chem 2020; 101:103993. [PMID: 32544737 DOI: 10.1016/j.bioorg.2020.103993] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/06/2020] [Accepted: 06/01/2020] [Indexed: 01/10/2023]
Abstract
Eleven new cembrane diterpenes, namely, sarcoehrenins A-J (1-9, 11) and (2S,11S,12S)-isosarcophytoxide (10), along with six known compounds, gibberosene B (12), (13S)-cembra-1,3,7,11-tetraen-13-ol (13), (+)-sarcophtol (14), cembrene-C (15), (1R,4R,2E,7E,11E)-cembra-2,7,11-trien-4-ol (16) and (1S,4R,2E,7E,11E)-cembratrien-4-ol (17) were isolated from the soft coral Sarcophyton ehrenbergi collected from Weizhou Island, Beibu Gulf, South China Sea. The structures of these compounds were elucidated by a combination of detailed spectroscopic analyses, chemical methods, and comparison with reported data. The absolute configuration of compound 2 was established by the modified Mosher's method in association with TDDFT ECD calculation, while the absolute configuration of compound 3 was assigned by TDDFT ECD approach. In in vitro bioassays, compounds 13 and 17 showed potent TNF-α inhibitory activities being similar to that of positive control dexamethasone. A preliminary structural-activity relationship was also described.
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Affiliation(s)
- Geng Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Heng Li
- Laboratory of Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Wei Tang
- Laboratory of Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Li-Gong Yao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Lin-Fu Liang
- College of Materials Science and Engineering, Central South University of Forestry and Technology, 498 South Shaoshan Road, Changsha 410004, China.
| | - Yue-Wei Guo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; College of Materials Science and Engineering, Central South University of Forestry and Technology, 498 South Shaoshan Road, Changsha 410004, China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China.
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5
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Harmange Magnani CS, Thach DQ, Haelsig KT, Maimone TJ. Syntheses of Complex Terpenes from Simple Polyprenyl Precursors. Acc Chem Res 2020; 53:949-961. [PMID: 32202757 DOI: 10.1021/acs.accounts.0c00055] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
From structure elucidation and biogenesis to synthetic methodology and total synthesis, terpene natural products have profoundly influenced the development of organic chemistry. Moreover, their myriad functional attributes range from fragrance to pharmaceuticals and have had great societal impact. Ruzicka's formulation of the "biogenetic isoprene rule," a Nobel Prize winning discovery now over 80 years old, allowed for identification of higher order terpene (aka "isoprenoid") structures from simple five-carbon isoprene fragments. Notably, the isoprene rule still holds pedagogical value to students of organic chemistry today. Our laboratory has completed syntheses of over two dozen terpene and meroterpene structures to date, and the isoprene rule has served as a key pattern recognition tool for our synthetic planning purposes. At the strategic level, great opportunity exists in finding unique and synthetically simplifying ways to connect the formal C5 isoprene fragments embedded in terpenes. Biomimetic cationic polyene cyclizations represent the earliest incarnation of this idea, which has facilitated expedient routes to certain terpene polycycle classes. Nonetheless, a large swath of terpene chemical space remains inaccessible using this approach.In this Account, we describe strategic insight into our endeavors in terpene synthesis published over the last five years. We show how biosynthetic understanding, combined with a desire to utilize abundant and inexpensive [C5]n building blocks, has led to efficient, abiotic syntheses of multiple complex terpenes with disparate ring systems. Informed by nature, but unconstrained by its processes, our synthetic assembly exploits chemical reactivity across diverse reaction types-including radical, anionic, pericyclic, and metal-mediated transformations.First, we detail an eight-step synthesis of the cembrane diterpene chatancin from dihydrofarnesal using a bioinspired-but not -mimetic-cycloaddition. Next, we describe the assembly of the antimalarial cardamom peroxide using a polyoxygenation cascade to fuse multiple units of molecular oxygen onto a dimeric skeleton. This three-to-four-step synthesis arises from (-)-myrtenal, an inexpensive pinene oxidation product. We then show how a radical cyclization cascade can forge the hallmark cyclooctane ring system of the complex sesterterpene 6-epi-ophiobolin N from two simple polyprenyl precursors, (-)-linalool and farnesol. To access the related, more complex metabolite 6-epi-ophiobolin A, we exploited the plasticity of our synthetic route and found that use of geraniol (C10) rather than farnesol (C15) gave us the flexibility needed to address the additional oxidation found in this congener. Following this work, we describe two strategies to access several guaianolide sesquiterpenes. Retrosynthetic disconnection to monoterpenes, carvone or (-)-linalool, coupled with a powerful allylation strategy allowed us to address guaianolides with disparate stereochemical motifs. Finally, we examine a semisynthetic approach to the illicium sesquiterpenes from the abundant 15-carbon feedstock terpene (+)-cedrol using an abiotic ring shift and multiple C-H oxidation reactions inspired by a postulated biosynthesis of this natural product class.
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Affiliation(s)
| | - Danny Q. Thach
- Department of Chemistry, University of California—Berkeley, Berkeley, California 94720, United States
| | - Karl T. Haelsig
- Department of Chemistry, University of California—Berkeley, Berkeley, California 94720, United States
| | - Thomas J. Maimone
- Department of Chemistry, University of California—Berkeley, Berkeley, California 94720, United States
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6
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Cole CJF, Fuentes L, Snyder SA. Asymmetric pyrone Diels-Alder reactions enabled by dienamine catalysis. Chem Sci 2019; 11:2175-2180. [PMID: 34123308 PMCID: PMC8150114 DOI: 10.1039/c9sc05738b] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Despite the proven value in utilizing pyrone dienes to create molecular complexity via Diels-Alder reactions with varied dienophiles, few examples of effective catalytic, asymmetric variants of this process have been developed. Herein, we show that the use of Jørgensen-Hayashi-type catalysts can convert an array of α,β-unsaturated aldehydes into chiral dienamines that can formally add in a Diels-Alder fashion to a number of electron-deficient pyrones of the coumalate-type to generate optically active [2.2.2]-bicyclic lactones. In most cases, the reactions proceed with good to excellent diastereo- and enantiocontrol (up to 99% ee). Models to explain that stereoselectivity, as well as several additional transformations of the resultant products, are also presented.
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Affiliation(s)
- Charles J F Cole
- Department of Chemistry, University of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
| | - Lilia Fuentes
- 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
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7
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Hu X, Musacchio AJ, Shen X, Tao Y, Maimone TJ. Allylative Approaches to the Synthesis of Complex Guaianolide Sesquiterpenes from Apiaceae and Asteraceae. J Am Chem Soc 2019; 141:14904-14915. [PMID: 31448610 DOI: 10.1021/jacs.9b08001] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
With hundreds of unique members isolated to date, guaianolide lactones represent a particularly prolific class of terpene natural products. Given their extensive documented therapeutic properties and fascinating chemical structures, these metabolites have captivated the synthetic chemistry community for many decades. As a result of divergent biosynthetic pathways, which produce a wide array of stereochemical and oxidative permutations, a unifying synthetic pathway to this broad family of natural products is challenging. Herein we document the evolution of a chiral-pool-based synthetic program aimed at accessing an assortment of guaianolides, particularly those from the plant family Apiaceae as well as Asteraceae, members of which possess distinct chemical substructures and necessitate deviating synthetic platforms. An initial route employing the linear monoterpene linalool generated a lower oxidation state guaianolide but was not compatible with the majority of family members. A double-allylation disconnection using a carvone-derived fragment was then developed to access first an Asteraceae-type guaianolide and then various Apiaceae congeners. Finally, using these findings in conjunction with a tandem polyoxygenation cascade, we developed a pathway to highly oxygenated nortrilobolide. A variety of interesting observations in metal-mediated aldehyde allylation and alkene polyoxygenation are reported and discussed.
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Affiliation(s)
| | | | | | | | - Thomas J Maimone
- Department of Chemistry , University of California, Berkeley , 826 Latimer Hall , Berkeley , California 94720 , United States
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8
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Xiang J, Zhao X, Li J, Ding Y, Wang C, Wang L, Chen Y. Rapid Construction of the Scaffold of Quorumolide A Enabled by a Tandem ROM/RCM Strategy and a Tandem Oxidative Cyclization Strategy. Org Lett 2019; 21:6485-6487. [PMID: 31365269 DOI: 10.1021/acs.orglett.9b02363] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A synthetically challenging framework in the plant-derived cembranoid quorumolide A was established in a seven-step sequence featuring a ring-opening/-closing metathesis cascade reaction to construct the fused butenolide ring and the 14-membered macroring in a single step. The utilization of a tandem oxidative cyclization strategy is the key to build the tetrahydro-2H-pyran moiety.
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Affiliation(s)
- Junhong Xiang
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research , Nankai University , Tianjin 300071 , China
| | - Xiuhe Zhao
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research , Nankai University , Tianjin 300071 , China
| | - Jiaxin Li
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research , Nankai University , Tianjin 300071 , China
| | - Yahui Ding
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research , Nankai University , Tianjin 300071 , China
| | - Chao Wang
- Department of Chemistry , Yale University , New Haven , Connecticut 06520 , United States
| | - Liang Wang
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research , Nankai University , Tianjin 300071 , China
| | - Yue Chen
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research , Nankai University , Tianjin 300071 , China
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9
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Affiliation(s)
- Quan Cai
- Department of Chemistry and Research Center for Molecular Recognition and SynthesisFudan University, 220 Handan Rd Shanghai 200433 China
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10
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Rao P, Hu J, Xuan J, Ding H. Total Synthesis of (−)-Pavidolide B: A Ring Contraction Strategy. J Org Chem 2019; 84:9385-9392. [DOI: 10.1021/acs.joc.9b01308] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peirong Rao
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Jialei Hu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Jun Xuan
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
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11
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He C, Xuan J, Rao P, Xie P, Hong X, Lin X, Ding H. Total Syntheses of (+)‐Sarcophytin, (+)‐Chatancin, (−)‐3‐Oxochatancin, and (−)‐Pavidolide B: A Divergent Approach. Angew Chem Int Ed Engl 2019; 58:5100-5104. [DOI: 10.1002/anie.201900782] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 02/20/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Chuan He
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Jun Xuan
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Peirong Rao
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Pei‐Pei Xie
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Xin Hong
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Xufeng Lin
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Hanfeng Ding
- Department of ChemistryZhejiang University Hangzhou 310058 China
- State Key Laboratory of Elemento-Organic ChemistryNankai University Tianjin 300071 China
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12
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Total Syntheses of (+)‐Sarcophytin, (+)‐Chatancin, (−)‐3‐Oxochatancin, and (−)‐Pavidolide B: A Divergent Approach. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900782] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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14
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Reber KP, Burdge HE. Total Synthesis of Pyrophen and Campyrones A-C. JOURNAL OF NATURAL PRODUCTS 2018; 81:292-297. [PMID: 29363969 DOI: 10.1021/acs.jnatprod.7b00720] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The first total syntheses of the natural products pyrophen and campyrones A-C, isolated from the fungus Aspergillus niger, have been achieved in six steps starting from commercially available N-Boc amino acids. Key steps in this sequence include a vinylogous Claisen condensation to achieve fragment coupling and a dioxinone thermolysis/cyclization cascade to form the α-pyrone ring. The route described herein afforded the natural products in 15-25% overall yield, furnishing sufficient material for testing in biological assays.
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Affiliation(s)
- Keith P Reber
- Department of Chemistry, Towson University , 8000 York Road, Towson, Maryland 21252, United States
| | - Hannah E Burdge
- Department of Chemistry, The Scripps Research Institute , 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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15
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Nannini LJ, Nemat SJ, Carreira EM. Total Synthesis of (+)‐Sarcophytin. Angew Chem Int Ed Engl 2018; 57:823-826. [DOI: 10.1002/anie.201711372] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Leonardo J. Nannini
- Laboratorium für Organische ChemieETH Zurich, HCl H335 Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Suren J. Nemat
- Laboratorium für Organische ChemieETH Zurich, HCl H335 Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische ChemieETH Zurich, HCl H335 Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
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16
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Abstract
A T-type calcium channel inhibiting natural product cochlearoid B was synthesized in 7 linear steps.
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Affiliation(s)
- Wuxia Zhang
- Key Laboratory of Synthetic Rubber
- Chinese Academy of Sciences
- Changchun 130022
- China
- Green Chemistry and Process Laboratory
| | - Dehai Xiao
- Key Laboratory of Synthetic Rubber
- Chinese Academy of Sciences
- Changchun 130022
- China
- Green Chemistry and Process Laboratory
| | - Bo Wang
- Key Laboratory of Synthetic Rubber
- Chinese Academy of Sciences
- Changchun 130022
- China
- Green Chemistry and Process Laboratory
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17
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Affiliation(s)
- Leonardo J. Nannini
- Laboratorium für Organische ChemieETH Zurich, HCl H335 Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Suren J. Nemat
- Laboratorium für Organische ChemieETH Zurich, HCl H335 Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische ChemieETH Zurich, HCl H335 Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
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18
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Huang SH, Liang KH, Lu JS, Chang WS, Su MD, Yang TF. Total Synthesis of (+)-Antrocin and Its Diastereomer and Clarification of the Absolute Stereochemistry of (-)-Antrocin. J Org Chem 2017; 82:9576-9584. [PMID: 28825480 DOI: 10.1021/acs.joc.7b01600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Using 2,2-dimethyl cyclohexanone as the starting compound, (+)-antrocin and its diastereomer have been synthesized. The absolute stereochemistry of (-)-antrocin, a natural sesqui-terpenoid and an antagonist in some types of cancer cells, was clarified using the character data of (+)-antrocin. The synthetic procedure involved two key steps: (1) the reaction of vinyl magnesium bromide with 2,2-dimethyl-6-t-butyl-dimethyl-silyoxy-methyl-1-cyclo-hexanone to give a vinyl cyclohexanol derivative and (2) a highly stereoselective intramolecular Diels-Alder (IMDA) reaction of the camphanate-containing triene intermediate. The relative energy levels of the possible transition states of the IMDA reaction of the camphanate-containing triene were obtained from density functional theory calculations, proving the stereospecific formation of the target molecule.
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Affiliation(s)
- Sheng-Han Huang
- Department of Applied Chemistry, National Chi Nan University , 1 University Road, Puli, 545 Nantou, Taiwan
| | - Kai-Hsiang Liang
- Department of Applied Chemistry, National Chi Nan University , 1 University Road, Puli, 545 Nantou, Taiwan
| | - Jia-Syun Lu
- Department of Applied Chemistry, National Chiayi University , 60004 Chiayi, Taiwan
| | - Wei-Sheng Chang
- Department of Applied Chemistry, National Chi Nan University , 1 University Road, Puli, 545 Nantou, Taiwan
| | - Ming-Der Su
- Department of Applied Chemistry, National Chiayi University , 60004 Chiayi, Taiwan.,Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , 80708 Kaohsiung, Taiwan
| | - Te-Fang Yang
- Department of Applied Chemistry, National Chi Nan University , 1 University Road, Puli, 545 Nantou, Taiwan
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19
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Žunič Kosi A, Zou Y, Hoskovec M, Vrezec A, Stritih N, Millar JG. Novel, male-produced aggregation pheromone of the cerambycid beetle Rosalia alpina, a priority species of European conservation concern. PLoS One 2017; 12:e0183279. [PMID: 28827817 PMCID: PMC5565183 DOI: 10.1371/journal.pone.0183279] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 08/01/2017] [Indexed: 01/06/2023] Open
Abstract
Several recent studies have demonstrated the great potential for exploiting semiochemicals in ecology and conservation studies. The cerambycid beetle Rosalia alpina represents one of the flagship species of saproxylic insect biodiversity in Europe. In recent years its populations appear to have declined substantially, and its range has shrunk considerably as a result of forest management and urbanization. Here, we collected volatile chemicals released by males and females of R. alpina. Analyses of the resulting extracts revealed the presence of a single male-specific compound, identified as a novel alkylated pyrone structure. In field bioassays in Slovenia, traps baited with the synthesized pyrone captured both sexes of R. alpina, indicating that the pyrone functions as an aggregation pheromone. Our results represent the first example of a new structural class of pheromones within the Cerambycidae, and demonstrate that pheromone-baited traps can provide a useful tool for sampling R. alpina. This tool could be particularly useful in the ongoing development of conservation strategies for the iconic but endangered Alpine longicorn.
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Affiliation(s)
- Alenka Žunič Kosi
- National Institute of Biology, Department of Organisms and Ecosystem Research, Ljubljana, Slovenia
| | - Yunfan Zou
- University of California, Department of Entomology, Riverside, California, United States of America
| | - Michal Hoskovec
- Institute of Organic Chemistry and Biochemistry ASCR, Prague, Czech Republic
| | - Al Vrezec
- National Institute of Biology, Department of Organisms and Ecosystem Research, Ljubljana, Slovenia
| | - Nataša Stritih
- National Institute of Biology, Department of Organisms and Ecosystem Research, Ljubljana, Slovenia
| | - Jocelyn G Millar
- University of California, Department of Entomology, Riverside, California, United States of America
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20
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Liu X, Hu YJ, Chen B, Min L, Peng XS, Zhao J, Li S, Wong HNC, Li CC. Asymmetric Total Syntheses of Colchicine, β-Lumicolchicine, and Allocolchicinoid N-Acetylcolchinol-O-methyl Ether (NCME). Org Lett 2017; 19:4612-4615. [DOI: 10.1021/acs.orglett.7b02224] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Xin Liu
- Institute
of Chinese Medical Sciences, University of Macau, Macao, China
- Department
of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ya-Jian Hu
- Institute
of Chinese Medical Sciences, University of Macau, Macao, China
- Department
of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Bo Chen
- Department
of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Long Min
- Department
of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xiao-Shui Peng
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Jing Zhao
- Institute
of Chinese Medical Sciences, University of Macau, Macao, China
| | - Shaoping Li
- Institute
of Chinese Medical Sciences, University of Macau, Macao, China
| | - Henry N. C. Wong
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Chuang-Chuang Li
- Department
of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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21
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Hare SR, Farnham JM, Tantillo DJ. Putative biosynthetic cycloadditions en route to the diterpenoid (+)-chatancin. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.11.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Betori RC, Miller ER, Scheidt KA. A Biocatalytic Route to Highly Enantioenriched β-Hydroxydioxinones. Adv Synth Catal 2017; 359:1131-1137. [PMID: 29104524 PMCID: PMC5663308 DOI: 10.1002/adsc.201700095] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A novel biocatalytic system to access a wide variety of β-hydroxydioxinones from β-ketodioxinones employing commercial engineered ketoreductases has been developed. This practical system provides a remarkably straightforward solution to limitations in accessing certain chemical scaffolds common in β-hydroxydioxinones that are of great interest due to their diversification capabilities. A few highlights of this system are that it is high yielding, highly enantioselective, and chromatography-free. We have demonstrated both a wide substrate scope and a high degree of scalability.
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Affiliation(s)
- Rick C Betori
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
| | - Eric R Miller
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
| | - Karl A Scheidt
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
- Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
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23
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Hugelshofer CL, Magauer T. Dyotropic rearrangements in natural product total synthesis and biosynthesis. Nat Prod Rep 2017; 34:228-234. [DOI: 10.1039/c7np00005g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Some recent examples of dyotropic rearrangements involved in complex natural product total synthesis and biosynthesis are highlighted.
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Affiliation(s)
| | - Thomas Magauer
- Department of Chemistry and Pharmacy
- Ludwig-Maximilians-Univeristy Munich
- 81377 Munich
- Germany
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24
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Brill ZG, Grover HK, Maimone TJ. Enantioselective synthesis of an ophiobolin sesterterpene via a programmed radical cascade. Science 2016; 352:1078-82. [PMID: 27230373 DOI: 10.1126/science.aaf6742] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 04/26/2016] [Indexed: 01/14/2023]
Abstract
Cyclase enzymes weave simple polyprenyl chains into the elaborate polycyclic ring systems of terpenes, a sequence that is often difficult to emulate under abiotic conditions. Here we report a disparate synthetic approach to complex terpenes whereby simple prenyl-derived chains are cyclized using radical, rather than cationic, reaction pathways. This strategy allowed us to efficiently forge the intricate 5-8-5 fused ring systems found in numerous complex natural product classes and also enabled a nine-step total synthesis of (-)-6-epi-ophiobolin N, a member of the large family of cytotoxic ophiobolin sesterterpenes. A small-molecule thiol catalyst was found to override the inherent diastereoselectivity observed during a reductive radical cascade cyclization process. This work lays the foundation for efficient synthesis of terpenoid ring systems of interest in medicinal research, particularly those that have been historically challenging to access.
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Affiliation(s)
- Zachary G Brill
- Department of Chemistry, University of California, Berkeley, 826 Latimer Hall, Berkeley, CA 94702, USA
| | - Huck K Grover
- Department of Chemistry, University of California, Berkeley, 826 Latimer Hall, Berkeley, CA 94702, USA
| | - Thomas J Maimone
- Department of Chemistry, University of California, Berkeley, 826 Latimer Hall, Berkeley, CA 94702, USA.
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25
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Cottrell Scholars 2016: W. C. K. Pomerantz, M. J. Rose, T. J. Maimone und Y. Yu / Ehrendoktorwürde: H. J. Freund. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605569] [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]
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26
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2016 Cottrell Scholars: W. C. K. Pomerantz, M. J. Rose, T. J. Maimone, and Y. Yu / Honorary Doctorate: H. J. Freund. Angew Chem Int Ed Engl 2016; 55:8485. [DOI: 10.1002/anie.201605569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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Gan P, Smith MW, Braffman NR, Snyder SA. Pyrone Diels-Alder Routes to Indolines and Hydroindolines: Syntheses of Gracilamine, Mesembrine, and Δ7-Mesembrenone. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510520] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Pei Gan
- Dept. of Chemistry; The Scripps Research Institute; 130 Scripps Way Jupiter FL 33458 USA
| | - Myles W. Smith
- Dept. of Chemistry; Columbia University; 3000 Broadway New York NY 10027 USA
- Dept. of Chemistry; The Scripps Research Institute; 130 Scripps Way Jupiter FL 33458 USA
| | | | - Scott A. Snyder
- Dept. of Chemistry; Columbia University; 3000 Broadway New York NY 10027 USA
- Dept. of Chemistry; The Scripps Research Institute; 130 Scripps Way Jupiter FL 33458 USA
- Dept. of Chemistry; The University of Chicago; 5735 South Ellis Avenue Chicago IL 60637 USA
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28
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Gan P, Smith MW, Braffman NR, Snyder SA. Pyrone Diels-Alder Routes to Indolines and Hydroindolines: Syntheses of Gracilamine, Mesembrine, and Δ7-Mesembrenone. Angew Chem Int Ed Engl 2016; 55:3625-30. [DOI: 10.1002/anie.201510520] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Indexed: 01/04/2023]
Affiliation(s)
- Pei Gan
- Dept. of Chemistry; The Scripps Research Institute; 130 Scripps Way Jupiter FL 33458 USA
| | - Myles W. Smith
- Dept. of Chemistry; Columbia University; 3000 Broadway New York NY 10027 USA
- Dept. of Chemistry; The Scripps Research Institute; 130 Scripps Way Jupiter FL 33458 USA
| | | | - Scott A. Snyder
- Dept. of Chemistry; Columbia University; 3000 Broadway New York NY 10027 USA
- Dept. of Chemistry; The Scripps Research Institute; 130 Scripps Way Jupiter FL 33458 USA
- Dept. of Chemistry; The University of Chicago; 5735 South Ellis Avenue Chicago IL 60637 USA
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29
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Huang B, Guo L, Jia Y. Protecting-Group-Free Enantioselective Synthesis of (−)-Pallavicinin and (+)-Neopallavicinin. Angew Chem Int Ed Engl 2015; 54:13599-603. [DOI: 10.1002/anie.201506575] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Indexed: 12/17/2022]
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30
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Huang B, Guo L, Jia Y. Protecting-Group-Free Enantioselective Synthesis of (−)-Pallavicinin and (+)-Neopallavicinin. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506575] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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31
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Feng C, Wang H, Xu L, Li P. N–B dative bond-induced [3.3.0] bicyclic boronate-tethered exo-selective intramolecular Diels–Alder reaction. Org Biomol Chem 2015; 13:7136-9. [DOI: 10.1039/c5ob00917k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report herein a highly exo-selective intramolecular Diels–Alder reaction of alkenyl boronates which employs an N–B dative bond-involved bicyclic rigid tether.
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Affiliation(s)
- Chao Feng
- Centre for Organic Chemistry
- Frontier Institute of Science and Technology (FIST)
- Xi'an Jiaotong University
- Xi'an
- China
| | - Hong Wang
- Centre for Organic Chemistry
- Frontier Institute of Science and Technology (FIST)
- Xi'an Jiaotong University
- Xi'an
- China
| | - Liang Xu
- Centre for Organic Chemistry
- Frontier Institute of Science and Technology (FIST)
- Xi'an Jiaotong University
- Xi'an
- China
| | - Pengfei Li
- Centre for Organic Chemistry
- Frontier Institute of Science and Technology (FIST)
- Xi'an Jiaotong University
- Xi'an
- China
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