1
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Xu Z, Li X, Rose JA, Herzon SB. Finding activity through rigidity: syntheses of natural products containing tricyclic bridgehead carbon centers. Nat Prod Rep 2023; 40:1393-1431. [PMID: 37140079 PMCID: PMC10472132 DOI: 10.1039/d3np00008g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Covering: up to 2022Tricyclic bridgehead carbon centers (TBCCs) are a synthetically challenging substructure found in many complex natural products. Here we review the syntheses of ten representative families of TBCC-containing isolates, with the goal of outlining the strategies and tactics used to install these centers, including a discussion of the evolution of the successful synthetic design. We provide a summary of common strategies to inform future synthetic endeavors.
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Affiliation(s)
- Zhi Xu
- Department of Chemistry, Yale University, New Haven, Connecticut, 06520, USA.
| | - Xin Li
- Department of Chemistry, Yale University, New Haven, Connecticut, 06520, USA.
| | - John A Rose
- Department of Chemistry, Yale University, New Haven, Connecticut, 06520, USA.
| | - Seth B Herzon
- Department of Chemistry, Yale University, New Haven, Connecticut, 06520, USA.
- Departments of Pharmacology and Therapeutic Radiology, Yale School of Medicine, New Haven, Connecticut, 06520, USA
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2
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Hayes G, Laurel M, MacKinnon D, Zhao T, Houck HA, Becer CR. Polymers without Petrochemicals: Sustainable Routes to Conventional Monomers. Chem Rev 2023; 123:2609-2734. [PMID: 36227737 PMCID: PMC9999446 DOI: 10.1021/acs.chemrev.2c00354] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Indexed: 11/28/2022]
Abstract
Access to a wide range of plastic materials has been rationalized by the increased demand from growing populations and the development of high-throughput production systems. Plastic materials at low costs with reliable properties have been utilized in many everyday products. Multibillion-dollar companies are established around these plastic materials, and each polymer takes years to optimize, secure intellectual property, comply with the regulatory bodies such as the Registration, Evaluation, Authorisation and Restriction of Chemicals and the Environmental Protection Agency and develop consumer confidence. Therefore, developing a fully sustainable new plastic material with even a slightly different chemical structure is a costly and long process. Hence, the production of the common plastic materials with exactly the same chemical structures that does not require any new registration processes better reflects the reality of how to address the critical future of sustainable plastics. In this review, we have highlighted the very recent examples on the synthesis of common monomers using chemicals from sustainable feedstocks that can be used as a like-for-like substitute to prepare conventional petrochemical-free thermoplastics.
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Affiliation(s)
- Graham Hayes
- Department
of Chemistry, University of Warwick, CV4 7ALCoventry, United Kingdom
| | - Matthew Laurel
- Department
of Chemistry, University of Warwick, CV4 7ALCoventry, United Kingdom
| | - Dan MacKinnon
- Department
of Chemistry, University of Warwick, CV4 7ALCoventry, United Kingdom
| | - Tieshuai Zhao
- Department
of Chemistry, University of Warwick, CV4 7ALCoventry, United Kingdom
| | - Hannes A. Houck
- Department
of Chemistry, University of Warwick, CV4 7ALCoventry, United Kingdom
- Institute
of Advanced Study, University of Warwick, CV4 7ALCoventry, United Kingdom
| | - C. Remzi Becer
- Department
of Chemistry, University of Warwick, CV4 7ALCoventry, United Kingdom
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3
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TG-FTIR-QMS analysis of more environmentally friendly poly(geranyl methacrylate)-co-poly(cyclohexyl methacrylate) copolymers. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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4
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Peraka S, Gorachand B, Hussain A, Sravanthi R, Ramachary DB. Organocatalytic One‐pot Synthesis of Pseudo‐Terpenoids. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Swamy Peraka
- University of Hyderabad School of Chemistry INDIA
| | | | | | | | - Dhevalapally B. Ramachary
- University of Hyderabad School of Chemistry Prof. C.R.Rao RoadCentral University PostGachi BowliHyderabad 500 046 Hyderabad INDIA
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5
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Cannazza P, Rabuffetti M, Donzella S, De Vitis V, Contente ML, de Oliveira MDCF, de Mattos MC, Barbosa FG, de Souza Oliveira RP, Pinto A, Molinari F, Romano D. Whole cells of recombinant CYP153A6-E. coli as biocatalyst for regioselective hydroxylation of monoterpenes. AMB Express 2022; 12:48. [PMID: 35478304 PMCID: PMC9046528 DOI: 10.1186/s13568-022-01389-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 04/12/2022] [Indexed: 11/13/2022] Open
Abstract
Optimized recombinant whole cells of E. coli bearing CYP153A6 were employed for catalyzing the hydroxylation of different monoterpene derivatives. In most cases, high selectivity was observed with exclusive hydroxylation of the allylic methyl group bound to the aliphatic ring. In the case of (R)- and (S)-carvone, hydroxylation occurred also on the other allylic methyl group, although to a lesser extent. Biotransformations carried out in fed-batch mode on (S)-limonene and α-terpineol showed that recombinant whole cells retained activity for at least 24 h, allowing for the recovery of 3.25 mg mL−1 of (S)-perillyl alcohol and 5.45 mg mL−1 of 7-hydroxy-α-terpineol, respectively. Different monoterpenes can be regioselectively hydroxylated by CYP153A6 monooxygenase The biotransformation with whole cells is complementary to chemical oxyfunctionalization Fed-batch biotransformations have been applied for preparative purposes
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6
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Wang X, Wang Z, Ma X, Huang Z, Sun K, Gao X, Fu S, Liu B. Asymmetric Total Synthesis of Shizukaol J, Trichloranoid C and Trishizukaol A. Angew Chem Int Ed Engl 2022; 61:e202200258. [PMID: 35102682 DOI: 10.1002/anie.202200258] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Indexed: 01/14/2023]
Abstract
The asymmetric total synthesis of three lindenane sesquiterpenoid oligomers, shizukaol J, trichloranoid C and trishizukaol A, has been accomplished concisely in 15, 16 and 18 longest linear steps, respectively. The expeditious construction of molecular architectures was facilitated by Nelson's catalytic asymmetric ketene-aldehyde cycloaddition, a sequence of allylic alkylation/reduction/acidic cyclization to forge a lactone, and a double aldol condensation cascade to construct the 5/6 bicyclic system. Diastereoselective nucleophilic substitution promoted by a phase transfer catalyst constructed the C11 quaternary stereogenic center, thus prompting synthetic efficacy toward shizukaol J. The synthesis of trichloranoid C and trishizukaol A was achieved after a cascade involving furanyl diene formation and a Diels-Alder reaction, as well as a one-pot sequence involving furan oxidation and global deprotection. Furthermore, our biological evaluation revealed that two compounds exhibited unexpected toxicity against tumor cell lines.
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Affiliation(s)
- Xiao Wang
- College of Chemistry, Sichuan University, 29 Wangjiang Rd., Chengdu, Sichuan, 610064, China
| | - Zhuang Wang
- College of Chemistry, Sichuan University, 29 Wangjiang Rd., Chengdu, Sichuan, 610064, China
| | - Xianjian Ma
- College of Chemistry, Sichuan University, 29 Wangjiang Rd., Chengdu, Sichuan, 610064, China
| | - Zhengsong Huang
- College of Chemistry, Sichuan University, 29 Wangjiang Rd., Chengdu, Sichuan, 610064, China
| | - Ke Sun
- School of Pharmaceutical Sciences, Xiamen University, South Xiangan Rd., Xiamen, Fujian, 361102, China
| | - Xiang Gao
- School of Pharmaceutical Sciences, Xiamen University, South Xiangan Rd., Xiamen, Fujian, 361102, China
| | - Shaomin Fu
- College of Chemistry, Sichuan University, 29 Wangjiang Rd., Chengdu, Sichuan, 610064, China
| | - Bo Liu
- College of Chemistry, Sichuan University, 29 Wangjiang Rd., Chengdu, Sichuan, 610064, China
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7
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Wang X, Wang Z, Ma X, Huang Z, Sun K, Gao X, Fu S, Liu B. Asymmetric Total Synthesis of Shizukaol J, Trichloranoid C and Trishizukaol A. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiao Wang
- College of Chemistry Sichuan University 29 Wangjiang Rd. Chengdu Sichuan 610064 China
| | - Zhuang Wang
- College of Chemistry Sichuan University 29 Wangjiang Rd. Chengdu Sichuan 610064 China
| | - Xianjian Ma
- College of Chemistry Sichuan University 29 Wangjiang Rd. Chengdu Sichuan 610064 China
| | - Zhengsong Huang
- College of Chemistry Sichuan University 29 Wangjiang Rd. Chengdu Sichuan 610064 China
| | - Ke Sun
- School of Pharmaceutical Sciences Xiamen University South Xiangan Rd. Xiamen Fujian 361102 China
| | - Xiang Gao
- School of Pharmaceutical Sciences Xiamen University South Xiangan Rd. Xiamen Fujian 361102 China
| | - Shaomin Fu
- College of Chemistry Sichuan University 29 Wangjiang Rd. Chengdu Sichuan 610064 China
| | - Bo Liu
- College of Chemistry Sichuan University 29 Wangjiang Rd. Chengdu Sichuan 610064 China
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8
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Wu GJ, Tan DX, Han FS. The Phosphinamide-Based Catalysts: Discovery, Methodology Development, and Applications in Natural Product Synthesis. Acc Chem Res 2021; 54:4354-4370. [PMID: 34784171 DOI: 10.1021/acs.accounts.1c00479] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In the total synthesis of natural products, synthetic efficiency has been an important driver for designing and developing new synthetic strategies and methodologies. To this end, the step, atom, and time economy and the overall yield are major factors to be considered. On the other hand, developing unified routes that can be used for synthesizing multiple molecules, specifically skeletally different classes of molecules, are also important aspects with which to be concerned. In the efforts toward efficient and flexible synthesis of structurally unique terpenoid and indole alkaloid natural products, we have designed and developed several phosphinamide-based new catalysts and reaction methodologies that have been compellingly demonstrated to be widely useful as strategic protocols for the diverse synthesis of various complex terpenoids and indole alkaloids. The important progress of these results will be summarized in this Account.In the first part, we present the stories of successful design and establishment of a novel method for the synthesis of P-stereogenic phosphinamides (P-SPhos) via a Pd-catalyzed C-H desymmetric enantioselective arylation, as well as the flexible derivatization of the P-stereogenic phosphinamides into various types of skeletally unique tricyclic and N,P-bidentate P-stereogenic compounds. Subsequently, the discovery of P-stereogenic phosphinamides as chiral organocatalysts for the desymmetric enantioselective reduction of cyclic 1,3-diketones and of phosphinamide-based cyclopalladium complex (C-Pd) as precatalysts for highly efficient Suzuki-Miyaura cross-coupling reaction of sterically congested nonactivated enolates is introduced. The notable features of the P-stereogenic phosphinamide-catalyzed desymmetric enantioselective reduction are highlighted by the broad substrate compatibility and excellent stereoselectivity, as well as most significantly, the good recoverability and reusability of catalysts. With regard to the sterically congested nonactivated enolates, such substrates are challenging for Suzuki cross-coupling reactions. We demonstrate that the phosphinamide-based cyclopalladium is a type of highly active precatalyst that allows the reaction to proceed under mild conditions and to be easily scaled up. Following the methodology development, the practical applications of these methods serving as strategic transformations are highlighted by the unified synthesis of four cyathane-type and two hamigeran-type terpenoids.In the second part, we describe the development of a robust method for oxidative Heck cross-coupling of indolyl amides by using the phosphinamide-based cyclopalladium as catalyst or phosphinamide as coligand. The method provides a general and straightforward method for diverse synthesis of indolyl δ-lactam derivatives, which present as a common core in a variety of Aspidosperma-derived indole alkaloids. The successful demonstration of this protocol for a concise and divergent synthesis of leuconodine-type indole alkaloids is also presented. We believe the results presented in this Account would have significant implications beyond our results and would find further applications in the field of synthetic methodology and natural product synthesis.
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Affiliation(s)
- Guo-Jie Wu
- CAS Key Lab of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin130022, China
| | - Dong-Xing Tan
- CAS Key Lab of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin130022, China
| | - Fu-She Han
- CAS Key Lab of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin130022, China
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9
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Sobhani M, Frey A, Rettmann A, Thom R, Villinger A, Ehlers P, Langer P. Synthesis of Dibenzotropones by Alkyne-Carbonyl Metathesis. J Org Chem 2021; 86:14420-14432. [PMID: 34708654 DOI: 10.1021/acs.joc.1c01132] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Dibenzocycloheptanones (dibenzotropones) were prepared by Brønsted acid mediated intramolecular alkyne-carbonyl metathesis (ACM) reactions. The cyclization precursors are readily available by Sonogashira reaction of 2-bromobenzoyl chloride with terminal alkynes, followed by Suzuki reactions with benzaldehydes. The ACM reactions are highly modular and atom economic and allow for the construction of two regioisomeric series of dibenzotropones.
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Affiliation(s)
- Maryam Sobhani
- Universität Rostock, Institut für Chemie, A.-Einstein-Str.3a, 18059 Rostock, Germany
| | - Anna Frey
- Universität Rostock, Institut für Chemie, A.-Einstein-Str.3a, 18059 Rostock, Germany
| | - Andre Rettmann
- Universität Rostock, Institut für Chemie, A.-Einstein-Str.3a, 18059 Rostock, Germany
| | - Richard Thom
- Universität Rostock, Institut für Chemie, A.-Einstein-Str.3a, 18059 Rostock, Germany
| | - Alexander Villinger
- Universität Rostock, Institut für Chemie, A.-Einstein-Str.3a, 18059 Rostock, Germany
| | - Peter Ehlers
- Universität Rostock, Institut für Chemie, A.-Einstein-Str.3a, 18059 Rostock, Germany.,Leibniz Institut für Katalyse an der Universität Rostock, A.-Einstein-Str.29a, 18059 Rostock, Germany
| | - Peter Langer
- Universität Rostock, Institut für Chemie, A.-Einstein-Str.3a, 18059 Rostock, Germany.,Leibniz Institut für Katalyse an der Universität Rostock, A.-Einstein-Str.29a, 18059 Rostock, Germany
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10
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Madhavachary R, Mallik R, Ramachary DB. Organocatalytic Enantiospecific Total Synthesis of Butenolides. Molecules 2021; 26:molecules26144320. [PMID: 34299595 PMCID: PMC8306825 DOI: 10.3390/molecules26144320] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/08/2021] [Accepted: 07/14/2021] [Indexed: 11/16/2022] Open
Abstract
Biologically important, chiral natural products of butenolides, (−)-blastmycinolactol, (+)-blastmycinone, (−)-NFX-2, (+)-antimycinone, lipid metabolites, (+)-ancepsenolide, (+)-homoancepsenolide, mosquito larvicidal butenolide and their analogues were synthesized in very good yields in a sequential one-pot manner by using an organocatalytic reductive coupling and palladium-mediated reductive deoxygenation or organocatalytic reductive coupling and silica-mediated reductive deamination as the key steps.
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11
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De S, Mahal E, Haque MA, Jana CK, Koley D. Computational Investigation of Multifaceted Cationic Rearrangement and Stereo- and Regioselectivity in the Formation of Dysideanone's Analogues. J Org Chem 2021; 86:1133-1140. [PMID: 33331777 DOI: 10.1021/acs.joc.0c02609] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Mechanistic studies of regiodivergent arylations of cycloalkanols to furnish enantioenriched dysideanone's analogues are performed by employing density functional theory (DFT) calculations (B3LYP-D3(SMD)/6-311++G**//B3LYP-D3/6-31+G** level of theory). On the basis of our calculations, remote γ'-C-H arylation is preferred for unsubstituted carbinol 1, an outcome from combined factors like carbocationic stability, less steric hindrance during C-C coupling, and facile dearomatization. Meanwhile, in the presence of dimethyl substituent 1Me, regioselective γ-arylation is favored by 3.4 kcal/mol, and both findings are in agreement with the reported experimental observations. Most importantly, we concur that the barrier associated with the formation of carbocation 6 and its substituted analogues correlates with the C-H arylation outcomes. Furthermore, the β-arylation route remains unlikely for all the reaction pathways explored in this study.
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Affiliation(s)
- Sriman De
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741 246, India
| | - Eti Mahal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741 246, India
| | - Md Ashraful Haque
- Department of Chemistry, Indian Institute of Technology (IIT) Guwahati, Guwahati 781 039, India
| | - Chandan K Jana
- Department of Chemistry, Indian Institute of Technology (IIT) Guwahati, Guwahati 781 039, India
| | - Debasis Koley
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741 246, India
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12
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Sharma D, Kumar M, Das P. Application of cyclohexane-1,3-diones for six-membered oxygen-containing heterocycles synthesis. Bioorg Chem 2020; 107:104559. [PMID: 33418315 DOI: 10.1016/j.bioorg.2020.104559] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/23/2020] [Accepted: 12/10/2020] [Indexed: 12/17/2022]
Abstract
Cyclohexan-1,3-dione derivatives are versatile scaffolds for the synthesis of a variety of value-added organic molecules including heterocycles and natural products. Six-membered oxygen heterocycles prepared from cyclohexan-1,3-diones are of much importance as they are intermediate for the synthesis of a number of natural products and several other valuable bioactive molecules which shows anti-viral, anti-bacterial, analgesic, antimalarial, anti-inflammatory, anti-allergic, anti-tumor and anti-cancer activities. These advantages have inspired us to write a detailed survey on the newly developed methods which are very essential in the construction of six-membered oxygen heterocycles. Further, the versatility in the chemistry of cyclohexan-1,3-dione and its derivatives is due to the presence of highly active methylene moiety and its active di-carbonyl groups. Recently, reactions of cyclohexane-1,3-dione and its derivatives with other substrates for instance aldehydes, malononitriles, NMSM, chalcones, isatin etc. have been established for the construction of a variety of six-membered oxygen heterocycles. The studies reported in this review article involved the synthesis of six-membered oxygen-containing heterocycles which includes 4H-chromen-5(6H)-one, 2H-xanthen-1(9H)-one, 2H-xanthen-1,8(5H,9H)-dione, 6H-chromen-2,5-dione derivatives and natural products having six-membered oxygen heterocycles from cyclohexane-1,3-dione and its derivatives as one of the substrate.
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Affiliation(s)
- Dharminder Sharma
- PG Department of Chemistry, JCDAV College Dasuya, Punjab 144205, India; Chemical Technology Department, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, HP, India.
| | - Manish Kumar
- Department of Chemistry, Govt. College Seraj at Lambathach, Distt. Mandi, 175048 HP, India; Chemical Technology Department, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, HP, India
| | - Pralay Das
- Chemical Technology Department, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, HP, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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13
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Bailly C, Gao JM. Erinacine A and related cyathane diterpenoids: Molecular diversity and mechanisms underlying their neuroprotection and anticancer activities. Pharmacol Res 2020; 159:104953. [PMID: 32485283 DOI: 10.1016/j.phrs.2020.104953] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/10/2020] [Accepted: 05/20/2020] [Indexed: 12/14/2022]
Abstract
The presence of a fused 5/6/7 tricyclic core characterizes the group of cyathane diterpene natural products, that include more than 170 compounds, isolated from fungi such as Cyathus africanus and Hericium erinaceus. These compounds have a common biosynthetic precursor (cyatha-3,12-diene) and can be produced bio- or hemi-synthetically, or via total syntheses. Cyathane diterpenes display a range of pharmacological properties, including anti-inflammatory (possibly through binding to the iNOS protein) and neuroprotective effects. Many cyathanes like cyahookerin C, cyathin Q and cyafranines B and G can stimulate neurite outgrowth in cells, whereas conversely a few molecules (such as scabronine M) inhibit NGF-stimulated neurite outgrowth. The main anticancer cyathanes are erinacine A and cyathins Q and R, with a capacity to trigger cancer cell death dependent on the production of reactive oxygen species (ROS). These compounds, active both in vitro and in vivo, activate different signaling pathways in tumor cells to induce apoptosis (and autophagy) and to upregulate the expression of several proteins implicated in the organization and functioning of the actin cytoskeleton. An analysis of the functional analogy between erinacine A and other natural products known to interfere with the actin network in a ROS-dependent manner (notably cucurbitacin B) further supports the idea that erinacine A functions as a perturbator of the cytoskeleton organization. Collectively, we provide an overview of the molecular diversity of cyathane diterpenes and the main mechanisms of action of the lead compounds, with the objective to encourage further research with these fungal products. The anticancer potential of erinacine A deserves further attention but it will be necessary to better characterize the implicated targets and signaling pathways.
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Affiliation(s)
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, People's Republic of China
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14
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Guo Y, Guo Z, Lu JT, Fang R, Chen SC, Luo T. Total Synthesis of (-)-Batrachotoxinin A: A Local-Desymmetrization Approach. J Am Chem Soc 2020; 142:3675-3679. [PMID: 32036656 DOI: 10.1021/jacs.9b12882] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An enantioselective total synthesis of (-)-batrachotoxinin A is accomplished based on a key photoredox coupling reaction and the subsequent local-desymmetrization operation. After the expedient assembly of the highly oxidized steroid skeleton, a delicate sequence of redox manipulations was carried out to deliver a late-stage intermediate on gram scale-and ultimately (-)-batrachotoxinin A in an efficient manner.
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Affiliation(s)
- Yinliang Guo
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education and Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Zhixian Guo
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education and Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Jia-Tian Lu
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education and Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Runting Fang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education and Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Si-Cong Chen
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education and Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Tuoping Luo
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education and Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China.,Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies , Peking University , Beijing 100871 , China
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15
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Kim MJ, Lee S, Kang T, Baik MH, Lee HY. Unexpected Selectivity of Intramolecular [3+2] Cycloaddition of Trimethylenemethane (TMM) Diyl toward Total Synthesis of Conidiogenone B. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901700] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Myungjo J. Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); 34141 Daejeon Republic of Korea
| | - Sanghyeon Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
| | - Taek Kang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
| | - Mu-Hyun Baik
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); 34141 Daejeon Republic of Korea
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
| | - Hee-Yoon Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
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16
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Veith C, Diot-Néant F, Miller SA, Allais F. Synthesis and polymerization of bio-based acrylates: a review. Polym Chem 2020. [DOI: 10.1039/d0py01222j] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Acrylates and polyacrylates have been produced massively due to their interesting applications like Plexiglas.
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Affiliation(s)
- Clémence Veith
- URD Agro-biotechnologie Industrielles (ABI)
- CEBB
- AgroParisTech
- Pomacle
- France
| | - Florian Diot-Néant
- URD Agro-biotechnologie Industrielles (ABI)
- CEBB
- AgroParisTech
- Pomacle
- France
| | - Stephen A. Miller
- The George and Josephine Butler Laboratory for Polymer Research
- Department of Chemistry
- University of Florida
- Gainesville
- USA
| | - Florent Allais
- URD Agro-biotechnologie Industrielles (ABI)
- CEBB
- AgroParisTech
- Pomacle
- France
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17
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Wu GJ, Han X. An improved synthesis of the [5.6.7]-tricyclic core of cyrneine B and glaucopine C. Org Chem Front 2020. [DOI: 10.1039/d0qo00758g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A strategically new route for an efficient synthesis of [5.6.7]-tricyclic 9, which could serve as an advanced intermediate, was presented.
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Affiliation(s)
- Guo-Jie Wu
- CAS Key Lab of High-Performance Synthetic Rubber and Its Composite Materials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Xiu Han
- College of Chemistry
- Sichuan University
- Chengdu
- China
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18
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Wu GJ, Zhang YH, Tan DX, He L, Cao BC, He YP, Han FS. Synthetic Studies on Enantioselective Total Synthesis of Cyathane Diterpenoids: Cyrneines A and B, Glaucopine C, and (+)-Allocyathin B2. J Org Chem 2019; 84:3223-3238. [DOI: 10.1021/acs.joc.8b03138] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Guo-Jie Wu
- CAS Key Lab of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China
| | - Yuan-He Zhang
- CAS Key Lab of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China
- University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Dong-Xing Tan
- CAS Key Lab of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China
- University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Long He
- Department of Chemical Engineering and Environment, Liaoning Shihua University, Fushun, Liaoning 113001, China
| | - Bao-Chen Cao
- Department of Chemical Engineering and Environment, Liaoning Shihua University, Fushun, Liaoning 113001, China
| | - Yu-Peng He
- Department of Chemical Engineering and Environment, Liaoning Shihua University, Fushun, Liaoning 113001, China
| | - Fu-She Han
- CAS Key Lab of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China
- University of Science and Technology of China, Hefei, Anhui 230026, China
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19
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Otawa Y, Mori K. Construction of seven- and eight-membered carbocycles by Lewis acid catalyzed C(sp3)–H bond functionalization. Chem Commun (Camb) 2019; 55:13856-13859. [DOI: 10.1039/c9cc08074k] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Concise construction of seven- or eight-membered carbocycles was accomplished by Lewis acid catalyzed C(sp3)–H bond functionalization.
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Affiliation(s)
- Yuna Otawa
- Department of Applied Chemistry
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Tokyo 184-8588
- Japan
| | - Keiji Mori
- Department of Applied Chemistry
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Tokyo 184-8588
- Japan
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20
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Wu GJ, Zhang YH, Tan DX, Han FS. Total synthesis of cyrneines A-B and glaucopine C. Nat Commun 2018; 9:2148. [PMID: 29858575 PMCID: PMC5984623 DOI: 10.1038/s41467-018-04480-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 04/24/2018] [Indexed: 11/28/2022] Open
Abstract
The cyrneine diterpenoids represent a structurally intriguing subfamily of cyathane diterpenoids and could significantly induce neurite outgrowth. Therefore, the efficient synthesis of these natural products is of great importance. Herein, we present a route for the collective synthesis of cyrneines A, B, and glaucopine C. As the key precursor, the 5-6-6-tricyclic scaffold is efficiently constructed by employing a mild Suzuki coupling of heavily substituted nonactivated cyclopentenyl triflate and a chelation-controlled regiospecific Friedel-Crafts cyclization as key transformations. The stereoselective installation of the all-carbon quaternary center at C6 ring junction of the tricycle is achieved via Birch reductive methylation. Subsequently, a carbenoid-mediated ring expansion furnishes the essential 5-6-7-tricyclic core. Finally, manipulation of this core by several appropriately orchestrated conversions accomplishes a more step-economic synthesis of cyrneine A (20 steps), and the first synthesis of cyrneine B (24 steps) and glaucopine C (23 steps).
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Affiliation(s)
- Guo-Jie Wu
- Key Lab of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin, 130022, China
| | - Yuan-He Zhang
- Key Lab of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin, 130022, China
- University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Dong-Xing Tan
- Key Lab of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin, 130022, China
- University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Fu-She Han
- Key Lab of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin, 130022, China.
- State Key Lab of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China.
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21
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Ramachary DB, Reddy PS, Gujral J. Construction of 2-Thiabicyclo[3.3.1]nonanes by Organocatalytic Asymmetric Formal [3+3] Cycloaddition. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701617] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - P. Srinivasa Reddy
- Catalysis Laboratory; School of Chemistry; University of Hyderabad; 500 046 Hyderabad- India
| | - Jagjeet Gujral
- Catalysis Laboratory; School of Chemistry; University of Hyderabad; 500 046 Hyderabad- India
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22
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Kobayashi T, Yamanoue K, Abe H, Ito H. Diastereoselective Total Synthesis of (±)-Toxicodenane A. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701219] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Toyoharu Kobayashi
- School of Life Sciences; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi, Hachioji 192-0392 Tokyo Japan
| | - Kotono Yamanoue
- School of Life Sciences; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi, Hachioji 192-0392 Tokyo Japan
| | - Hideki Abe
- School of Life Sciences; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi, Hachioji 192-0392 Tokyo Japan
| | - Hisanaka Ito
- School of Life Sciences; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi, Hachioji 192-0392 Tokyo Japan
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23
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Kim JY, Suhl CH, Lee JH, Cho CG. Directed Fischer Indolization as an Approach to the Total Syntheses of (+)-Aspidospermidine and (−)-Tabersonine. Org Lett 2017; 19:6168-6171. [DOI: 10.1021/acs.orglett.7b03078] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joo-Young Kim
- Center for New Directions in Organic
Synthesis, Department of Chemistry, Hanyang University, 222 Wangshimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Chang-Heon Suhl
- Center for New Directions in Organic
Synthesis, Department of Chemistry, Hanyang University, 222 Wangshimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Joon-Ho Lee
- Center for New Directions in Organic
Synthesis, Department of Chemistry, Hanyang University, 222 Wangshimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Cheon-Gyu Cho
- Center for New Directions in Organic
Synthesis, Department of Chemistry, Hanyang University, 222 Wangshimni-ro, Seongdong-gu, Seoul 04763, Korea
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24
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Haque MA, Jana CK. Regiodivergent Remote Arylation of Cycloalkanols to Dysideanone's Fused Carbotetracycles and Its Bridged Isomers. Chemistry 2017; 23:13300-13304. [PMID: 28771837 DOI: 10.1002/chem.201703094] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Indexed: 01/22/2023]
Abstract
Regiodivergent γ and γ' arylations across an all-carbon quaternary center of cycloalkanols to access enantioenriched fused and bridged carbotetracycles are reported. The conformation of the carbocation guided either sequential stereospecific β-C-Me/γ-C-H-shifts or β-C-Me/γ'-C-H-shifts, providing fused carbotetracyclic analogs of dysideanone or bridged tetracycles, respectively. The reaction is highly stereoselective in building three contiguous stereocenters, where one, two, or three could be all-carbon quaternary centers. Interestingly, mechanistic studies revealed a crucial role of a methyl substituent in controlling regioselectivity.
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Affiliation(s)
- Md Ashraful Haque
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - Chandan K Jana
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
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25
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Gallier F, Martel A, Dujardin G. Enantioselective Access to Robinson Annulation Products and Michael Adducts as Precursors. Angew Chem Int Ed Engl 2017; 56:12424-12458. [PMID: 28436571 DOI: 10.1002/anie.201701401] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Indexed: 12/26/2022]
Abstract
The Robinson annulation is a reaction that has been useful for numerous syntheses since its discovery in 1935, especially in the field of steroid synthesis. The products are usually obtained after three consecutive steps: the formation of an enolate (or derivative), a conjugate addition, and an aldol reaction. Over the years, several methodological improvements have been made for each individual step or alternative routes have been devised to access the Robinson annulation products. The first part of this Review outlines the most relevant developments towards the formation of monocarbonyl-derived Robinson annulation products (MRA products, MRAPs) and activated monocarbonyl-derived Robinson annulation products (AMRA products, AMRAPs). The following sections are then devoted to the diastereoselective and enantioselective synthesis of these products, while the last section describes the enantiomeric resolution of racemic mixtures.
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Affiliation(s)
- Florian Gallier
- Laboratoire de Chimie Biologique, EA 4505, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95031, Cergy-Pontoise, France
| | - Arnaud Martel
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS Université du Maine, Avenue O. Messiaen, Le Mans, France
| | - Gilles Dujardin
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS Université du Maine, Avenue O. Messiaen, Le Mans, France
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26
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Gallier F, Martel A, Dujardin G. Enantioselektive Synthese von Robinson‐Anellierungsprodukten und Michael‐Addukten als Vorstufen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701401] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Florian Gallier
- Laboratoire de Chimie Biologique, EA 4505 Université de Cergy-Pontoise 5 Mail Gay-Lussac 95031 Cergy-Pontoise Frankreich
| | - Arnaud Martel
- Institut des Molécules et Matériaux du Mans UMR 6283 CNRS Université du Maine Avenue O. Messiaen Le Mans Frankreich
| | - Gilles Dujardin
- Institut des Molécules et Matériaux du Mans UMR 6283 CNRS Université du Maine Avenue O. Messiaen Le Mans Frankreich
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27
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Ramachary DB, Anif Pasha M, Thirupathi G. Organocatalytic Asymmetric Formal [3+2] Cycloaddition as a Versatile Platform to Access Methanobenzo[7]annulenes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706557] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Mohammed Anif Pasha
- Catalysis Laboratory; School of Chemistry; University of Hyderabad; Hyderabad 500 046 India
| | - Guguloth Thirupathi
- Catalysis Laboratory; School of Chemistry; University of Hyderabad; Hyderabad 500 046 India
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28
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Ramachary DB, Anif Pasha M, Thirupathi G. Organocatalytic Asymmetric Formal [3+2] Cycloaddition as a Versatile Platform to Access Methanobenzo[7]annulenes. Angew Chem Int Ed Engl 2017; 56:12930-12934. [PMID: 28783234 DOI: 10.1002/anie.201706557] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 07/30/2017] [Indexed: 11/12/2022]
Abstract
Pharmaceutically and structurally important methanobenzo[7]annulenes were synthesized in very good yields with excellent enantio- and diastereoselectivities through an unprecedented organocatalytic formal [3+2] cycloaddition from readily available 2-alkyl-3-hydroxynaphthalene-1,4-diones and alkyl vinyl ketones.
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Affiliation(s)
| | - Mohammed Anif Pasha
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad, 500 046, India
| | - Guguloth Thirupathi
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad, 500 046, India
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29
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Liu Y, Li L, Xie J, Zhou Q. Divergent Asymmetric Total Synthesis of Mulinane Diterpenoids. Angew Chem Int Ed Engl 2017; 56:12708-12711. [DOI: 10.1002/anie.201706994] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Yun‐Ting Liu
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
| | - Lin‐Ping Li
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
| | - Jian‐Hua Xie
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
| | - Qi‐Lin Zhou
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
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30
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Liu Y, Li L, Xie J, Zhou Q. Divergent Asymmetric Total Synthesis of Mulinane Diterpenoids. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706994] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yun‐Ting Liu
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
| | - Lin‐Ping Li
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
| | - Jian‐Hua Xie
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
| | - Qi‐Lin Zhou
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
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31
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Xiong P, Xu HH, Xu HC. Metal- and Reagent-Free Intramolecular Oxidative Amination of Tri- and Tetrasubstituted Alkenes. J Am Chem Soc 2017; 139:2956-2959. [PMID: 28199102 DOI: 10.1021/jacs.7b01016] [Citation(s) in RCA: 157] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A metal- and reagent-free, electrochemical intramolecular oxidative amination reaction of tri- and tetrasubstituted alkenes has been developed. The electrosynthetic method proceeds through radical cyclization to form the key C-N bond, allowing a variety of hindered tri- and tetrasubstituted olefins to participate in the amination reaction. The result is the efficient synthesis of a host of alkene-bearing cyclic carbamates and ureas and lactams.
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Affiliation(s)
- Peng Xiong
- iChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, P. R. China
| | - He-Huan Xu
- iChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, P. R. China
| | - Hai-Chao Xu
- iChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, P. R. China
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32
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Bai Y, Davis DC, Dai M. Natural Product Synthesis via Palladium-Catalyzed Carbonylation. J Org Chem 2017; 82:2319-2328. [PMID: 28170262 DOI: 10.1021/acs.joc.7b00009] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yu Bai
- Department of Chemistry and
Center for Cancer Research, Purdue University, West Lafayette, Indiana 47907, United States
| | - Dexter C. Davis
- Department of Chemistry and
Center for Cancer Research, Purdue University, West Lafayette, Indiana 47907, United States
| | - Mingji Dai
- Department of Chemistry and
Center for Cancer Research, Purdue University, West Lafayette, Indiana 47907, United States
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33
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Denmark SE, Ibrahim MYS, Ambrosi A. Room Temperature, Reductive Alkylation of Activated Methylene Compounds: Carbon–Carbon Bond Formation Driven by the Rhodium-Catalyzed Water–Gas Shift Reaction. ACS Catal 2016. [DOI: 10.1021/acscatal.6b03183] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Scott E. Denmark
- Roger Adams Laboratory, Department
of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Malek Y. S. Ibrahim
- Roger Adams Laboratory, Department
of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Andrea Ambrosi
- Roger Adams Laboratory, Department
of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
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34
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Gomes J, Daeppen C, Liffert R, Roesslein J, Kaufmann E, Heikinheimo A, Neuburger M, Gademann K. Formal Total Synthesis of (-)-Jiadifenolide and Synthetic Studies toward seco-Prezizaane-Type Sesquiterpenes. J Org Chem 2016; 81:11017-11034. [PMID: 27740748 DOI: 10.1021/acs.joc.6b02039] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Synthetic studies toward highly oxygenated seco-prezizaane sesquiterpenes are reported, which culminated in a formal total synthesis of the neurotrophic agent (-)-jiadifenolide. For the construction of the tricyclic core structure, an unusual intramolecular and diastereoselective Nozaki-Hiyama-Kishi reaction involving a ketone as electrophilic coupling partner was developed. In addition, synthetic approaches toward the related natural product (2R)-hydroxy-norneomajucin, featuring a Mn-mediated radical cyclization for the tricycle assembly and a regioselective OH-directed C-H activation are presented.
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Affiliation(s)
- José Gomes
- Department of Chemistry, University of Basel , St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Christophe Daeppen
- Department of Chemistry, University of Basel , St. Johanns-Ring 19, CH-4056 Basel, Switzerland.,Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Raphael Liffert
- Department of Chemistry, University of Basel , St. Johanns-Ring 19, CH-4056 Basel, Switzerland.,Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Joel Roesslein
- Department of Chemistry, University of Basel , St. Johanns-Ring 19, CH-4056 Basel, Switzerland.,Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Elias Kaufmann
- Department of Chemistry, University of Basel , St. Johanns-Ring 19, CH-4056 Basel, Switzerland.,Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Annakaisa Heikinheimo
- Department of Chemistry, University of Basel , St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Markus Neuburger
- Department of Chemistry, University of Basel , St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Karl Gademann
- Department of Chemistry, University of Basel , St. Johanns-Ring 19, CH-4056 Basel, Switzerland.,Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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35
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Abstract
This review focuses on total syntheses of diterpenoids starting from carvone (1) since 2006 in the alphabetical order of compound names.
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Affiliation(s)
- Hisahiro Hagiwara
- Graduate School of Science and Technology, Niigata University, 8050, 2-Nocho, Ikarashi, Nishi-ku, Niigata, 950-2181, Japan
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36
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Gong J, Chen H, Liu XY, Wang ZX, Nie W, Qin Y. Total synthesis of atropurpuran. Nat Commun 2016; 7:12183. [PMID: 27387707 PMCID: PMC4941107 DOI: 10.1038/ncomms12183] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 06/09/2016] [Indexed: 02/07/2023] Open
Abstract
Due to their architectural intricacy and biological significance, the synthesis of polycyclic diterpenes and their biogenetically related alkaloids have been the subject of considerable interest over the last few decades, with progress including the impressive synthesis of several elusive targets. Despite tremendous efforts, conquering the unique structural types of this large natural product family remains a long-term challenge. The arcutane diterpenes and related alkaloids, bearing a congested tetracyclo[5.3.3.0(4,9).0(4,12)]tridecane unit, are included in these unsolved enigmas. Here we report a concise approach to the construction of the core structure of these molecules and the first total synthesis of (±)-atropurpuran. Pivotal features of the synthesis include an oxidative dearomatization/intramolecular Diels-Alder cycloaddition cascade, sequential aldol and ketyl-olefin cyclizations to assemble the highly caged framework, and a chemoselective and stereoselective reduction to install the requisite allylic hydroxyl group in the target molecule.
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Affiliation(s)
- Jing Gong
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, and State Key Laboratory of Biotherapy, Sichuan University, No. 17, Section 3, Renmin Nan Road, Chengdu 610041, China
| | - Huan Chen
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, and State Key Laboratory of Biotherapy, Sichuan University, No. 17, Section 3, Renmin Nan Road, Chengdu 610041, China
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, and State Key Laboratory of Biotherapy, Sichuan University, No. 17, Section 3, Renmin Nan Road, Chengdu 610041, China
| | - Zhi-Xiu Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, and State Key Laboratory of Biotherapy, Sichuan University, No. 17, Section 3, Renmin Nan Road, Chengdu 610041, China
| | - Wei Nie
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, and State Key Laboratory of Biotherapy, Sichuan University, No. 17, Section 3, Renmin Nan Road, Chengdu 610041, China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, and State Key Laboratory of Biotherapy, Sichuan University, No. 17, Section 3, Renmin Nan Road, Chengdu 610041, China
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37
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Sainz MF, Souto JA, Regentova D, Johansson MKG, Timhagen ST, Irvine DJ, Buijsen P, Koning CE, Stockman RA, Howdle SM. A facile and green route to terpene derived acrylate and methacrylate monomers and simple free radical polymerisation to yield new renewable polymers and coatings. Polym Chem 2016. [DOI: 10.1039/c6py00357e] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present new acrylic monomers, polymers and coatings derived directly from abundant naturally available terpenes via facile, green and catalytic approaches.
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Affiliation(s)
- M. F. Sainz
- School of Chemistry
- University of Nottingham
- University Park Nottingham NG7 2RD
- Nottingham
- UK
| | - J. A. Souto
- School of Chemistry
- University of Nottingham
- University Park Nottingham NG7 2RD
- Nottingham
- UK
| | - D. Regentova
- School of Chemistry
- University of Nottingham
- University Park Nottingham NG7 2RD
- Nottingham
- UK
| | - M. K. G. Johansson
- School of Chemical Science and Engineering
- KTH Royal Institute of Technology
- SE-100 44 Stockholm
- Sweden
| | - S. T. Timhagen
- School of Chemical Science and Engineering
- KTH Royal Institute of Technology
- SE-100 44 Stockholm
- Sweden
| | - D. J. Irvine
- Department of Chemical and Environmental Engineering
- University Park Nottingham NG7 2RD
- Nottingham
- UK
| | - P. Buijsen
- DSM Coating Resins
- 8022 AW Zwolle
- Netherlands
| | | | - R. A. Stockman
- School of Chemistry
- University of Nottingham
- University Park Nottingham NG7 2RD
- Nottingham
- UK
| | - S. M. Howdle
- School of Chemistry
- University of Nottingham
- University Park Nottingham NG7 2RD
- Nottingham
- UK
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38
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Marcos I, Moro R, Gil-Mesón A, Díez D. 7-6-5 Tricarbocyclic Diterpenes. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2016. [DOI: 10.1016/b978-0-444-63602-7.00005-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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39
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Daeppen C, Kaiser M, Neuburger M, Gademann K. Preparation of Antimalarial Endoperoxides by a Formal [2 + 2 + 2] Cycloaddition. Org Lett 2015; 17:5420-3. [PMID: 26491785 DOI: 10.1021/acs.orglett.5b02773] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A formal [2 + 2 + 2] cycloaddition reaction between a 1,3-dione, an olefin, and molecular oxygen mediated by light is reported, which delivers endoperoxides in good yield through the formation of two C-O and one C-C bond in one step. The resulting 1,2-dioxanes are stable compounds and can be further derivatized at the hemiacetal position via alkylation or acetylation. All compounds have been evaluated against Plasmodium falciparum, and the best compound displayed an IC50-value of 180 nM. A potential mechanistic rationale for the formation of these compounds is presented.
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Affiliation(s)
- Christophe Daeppen
- Department of Chemistry, University of Basel , St. Johanns-Ring 19, CH-4056 Basel, Switzerland.,Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Marcel Kaiser
- Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute (Swiss TPH), Socinstrasse 57, CH-4002 Basel, Switzerland
| | - Markus Neuburger
- Department of Chemistry, University of Basel , St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Karl Gademann
- Department of Chemistry, University of Basel , St. Johanns-Ring 19, CH-4056 Basel, Switzerland.,Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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40
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Gademann K. Copy, edit, and paste: natural product approaches to biomaterials and neuroengineering. Acc Chem Res 2015; 48:731-9. [PMID: 25719515 DOI: 10.1021/ar500435b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Progress in the chemical sciences has formed the world we live in, both on a macroscopic and on a nanoscopic scale. The last century witnessed the development of high performance materials that interact with humans on many layers, from clothing to construction, from media to medical devices. On a molecular level, natural products and their derivatives influence many biological processes, and these compounds have enormously contributed to the health and quality of living of humans. Although coatings of stone materials with oils or resins (containing natural products) have led to improved tools already millennia ago, in contrast today, natural product approaches to designer materials, that is, combining the best of both worlds, remain scarce. In this Account, we will summarize our recent research efforts directed to the generation of natural product functionalized materials, exploiting the strategy of "copy, edit, and paste with natural products". Natural products embody the wisdom of evolution, and only total synthesis is able to unlock the secrets enshrined in their molecular structure. We employ total synthesis ("copy") as a scientific approach to address problems related to molecular structure, the biosynthesis of natural products, and their bioactivity. Additionally, the fundamental desire to investigate the mechanism of action of natural products constitutes a key driver for scientific inquiry. In an emerging area of relevance to society, we have prepared natural products such as militarinone D that can stimulate neurite outgrowth and facilitate nerve regeneration. This knowledge obtained by synthetic organic chemistry on complex natural products can then be used to design structurally simplified compounds that retain the biological power of the parent natural product ("edit"). This process, sometimes referred to as function-oriented synthesis, allows obtaining derivatives with better properties, improving their chemical tractability and reducing the step count of the synthesis. Along these lines, we have demonstrated that militarinone D can be truncated to yield structurally simplified analogs with improved activity. Finally, with the goal of designing bioactive materials, we have immobilized functionally optimized, neuritogenic natural products ("paste"). These materials could facilitate nerve regeneration, act as nerve guidance conduits, or lead to new approaches in neuroengineering. Based on the surface-adhesive properties of electron-deficient catecholates and the knowledge gathered on neuritogenic natural product derivatives, two mechanistically different design principles have been applied to generate neuritogenic materials. In conclusion, natural products, and their functionally optimized analogs, present a large, mostly untapped reservoir of powerful modulators of biological systems, and their hybridization with materials can lead to new approaches in various fields, from biofilm prevention to neuroengineering.
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Affiliation(s)
- Karl Gademann
- Department of Chemistry, University of Basel, St. Johanns-Ring
19, CH-4056 Basel, Switzerland
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41
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Urabe D, Asaba T, Inoue M. Convergent Strategies in Total Syntheses of Complex Terpenoids. Chem Rev 2015; 115:9207-31. [DOI: 10.1021/cr500716f] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Daisuke Urabe
- Graduate
School of Pharmaceutical
Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Taro Asaba
- Graduate
School of Pharmaceutical
Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masayuki Inoue
- Graduate
School of Pharmaceutical
Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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43
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Madhavachary R, Ramachary DB. High-Yielding Total Synthesis of Sexually Deceptive Chiloglottones and Antimicrobial Dialkylresorcinols through an Organocatalytic Reductive Coupling Reaction. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403128] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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44
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Burch P, Schmid F, Gademann K. Neuritogenic surfaces using natural product analogs. Adv Healthc Mater 2014; 3:1415-9. [PMID: 24596342 DOI: 10.1002/adhm.201300671] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 02/10/2014] [Indexed: 01/08/2023]
Abstract
Neuritogenic surfaces are generated by a simple dip-coating procedure, as glass slides are coated with a neurotrophin-like small organic molecule in the presence of a collagen matrix. The surfaces retain their biological activity for multiple cycles and the protocol is suitable for various substrates and coating conditions.
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Affiliation(s)
- Patrick Burch
- Department of Chemistry; University of Basel; St. Johanns-Ring 19 CH-4056 Basel Switzerland
| | - Fabian Schmid
- Department of Chemistry; University of Basel; St. Johanns-Ring 19 CH-4056 Basel Switzerland
| | - Karl Gademann
- Department of Chemistry; University of Basel; St. Johanns-Ring 19 CH-4056 Basel Switzerland
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Ramachary DB, Venkaiah C, Reddy YV. High-yielding sequential one-pot synthesis of chiral and achiral α-substituted acrylates via a metal-free reductive coupling reaction. Org Biomol Chem 2014; 12:5400-6. [PMID: 24934801 DOI: 10.1039/c4ob00667d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general process for the high-yielding synthesis of substituted chiral and achiral α-substituted acrylates was achieved through the sequential one-pot combination of a metal-free reductive coupling reaction followed by an Eschenmoser methylenation. The proline catalyzed reaction of Meldrum's acid, aldehydes and Hantzsch ester followed by methylenation was successful with Eschenmoser's salt in the presence of an alcohol solvent. Herein, we have shown the high-yielding synthesis of privileged building blocks from chiral/achiral α-substituted acrylates and shown them to be very good intermediates in the pharmaceuticals and natural products synthesis.
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46
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Nakada M. Enantioselective Total Syntheses of Cyathane Diterpenoids. CHEM REC 2014; 14:641-62. [DOI: 10.1002/tcr.201402019] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Masahisa Nakada
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Ohkubo, Shinjuku-ku Tokyo 169-8555 Japan
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47
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Huang PQ, Ou W, Xiao KJ, Wang AE. Tertiary amide-based Knoevenagel-type reactions: a direct, general, and chemoselective approach to enaminones. Chem Commun (Camb) 2014; 50:8761-3. [DOI: 10.1039/c4cc03826f] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Hoecker J, Liffert R, Burch P, Wehlauch R, Gademann K. Caged retinoids as photoinducible activators: implications for cell differentiation and neurite outgrowth. Org Biomol Chem 2014; 11:3314-21. [PMID: 23538708 DOI: 10.1039/c3ob40106e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Aiming to control neurite formation and navigate the axonal growth by an extrinsic guidance, we report on the design, synthesis and biological evaluation of caged retinoids. Agonists of RARβ have been temporarily blocked either by the [(α-methyl-2-nitropiperonyl)oxy]carbonyl (MeNPOC) group or by immobilization using nitrocatechol linkers on TiO2 particles. Release on demand has been achieved by release under UV irradiation, leading to the biologically active compounds, which have been shown to induce neuronal differentiation and neurite outgrowth.
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Affiliation(s)
- Johannes Hoecker
- Department of Chemistry, NCCR Chemical Biology, University of Basel, Basel, Switzerland
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49
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Kobayakawa Y, Nakada M. Enantioselective total synthesis of (−)-cyathin B2. J Antibiot (Tokyo) 2014; 67:483-5. [DOI: 10.1038/ja.2014.23] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 02/13/2014] [Accepted: 02/27/2014] [Indexed: 11/09/2022]
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50
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Chen H, Jiang HZ, Li YC, Wei GQ, Geng Y, Ma CY. Antitumor Constituents from Anthriscus Sylvestris (L.) Hoffm. Asian Pac J Cancer Prev 2014; 15:2803-7. [DOI: 10.7314/apjcp.2014.15.6.2803] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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