1
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Zhu M, Zhu M, Wei F, Shao C, Li X, Liu B. Synthesis of Bridged Cycloisoxazoline Scaffolds via Rhodium-Catalyzed Coupling of Nitrones with Cyclic Carbonate. J Org Chem 2023; 88:16330-16339. [PMID: 37966420 DOI: 10.1021/acs.joc.3c01840] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Bridged isoxazolidines were synthesized via Rh(III)-catalyzed C-H allylation of α-aryl nitrones with 5-methylene-1,3-dioxan-2-one. The nitrone group serves as a directing group and 1,3-dipole in the C-H activation/[3 + 2] cycloaddition cascade, exhibiting excellent chemo- and stereoselectivity along with good functional group compatibility. The resulting skeletal structure was conveniently modified to produce a range of important chemical frameworks, and the protocol was applied to biologically active molecules.
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Affiliation(s)
- Man Zhu
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Mengdie Zhu
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Fangjie Wei
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Chongjing Shao
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xingwei Li
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Bingxian Liu
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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2
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Brześkiewicz J, Loska R. Synthesis of Isoindole N-Oxides by Palladium-Catalyzed C-H Functionalization of Aldonitrones. J Org Chem 2023; 88:2385-2392. [PMID: 36704962 DOI: 10.1021/acs.joc.2c02797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A palladium-catalyzed strategy for isoindole N-oxide ring construction by C-H functionalization of aldonitrones is described. Our protocol is of general character, providing isoindole N-oxides with a variety of functional groups, including very sterically congested products. Further transformations into spirocyclic isoindolines, isoindoles, or a polycyclic isoquinolinium salt have been demonstrated as well. A mechanistic study suggests that the catalytic process proceeds via a Heck-type addition to the double C═N bond.
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Affiliation(s)
- Jakub Brześkiewicz
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland
| | - Rafał Loska
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland
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3
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Kang G, Park S, Han S. Synthesis of High-Order and High-Oxidation State Securinega Alkaloids. Acc Chem Res 2023; 56:140-156. [PMID: 36594722 DOI: 10.1021/acs.accounts.2c00719] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Securinega alkaloids, composed of more than 100 members characterized by the compact tetracyclic scaffold, have fascinated the synthetic community with their structural diversity and notable bioactivities. On the basis of the structural phenotype, oligomerizations and oxidations are major biosynthetic diversification modes of the basic Securinega framework. Despite the rich history of synthesis of basic monomeric Securinega alkaloids, the synthesis of oligomeric Securinega alkaloids, as well as oxidized derivatives, has remained relatively unexplored because of their extra structural complexity. In the first half of this Account, our synthetic studies toward high-order Securinega alkaloids are described. We aimed to establish a reliable synthetic method to form C14-C15' and C12-C15' bonds, which are prevalent connection modes between monomers. During our total synthesis of flueggenine C (9), we have invented an accelerated Rauhut-Currier reaction capable of forming the C14-C15' bond stereoselectively. Installation of the nucleophilic functionality to the Michael acceptor, which ushers the C-C bond forming conjugate addition to follow the intramolecular pathway, was the key to success. The C12-C15' linkage, which was inaccessible via an accelerated Rauhut-Currier reaction, was established by devising a complementary cross-coupling/conjugate reduction-based dimerization strategy that enabled the total synthesis of flueggenines D (11) and I (14). In this approach, the C12-C15' linkage was established via a Stille cross-coupling, and the stereochemistry of the C15' position was controlled during the following conjugate reduction step. In the later half of this Account, our achievements in the field of high-oxidation state Securinega alkaloids synthesis are depicted. We have developed oxidative transformations at the N1 and C2-C4 positions, where the biosynthetic oxidation event occurs most frequently. The discovery of a VO(acac)2-mediated regioselective Polonovski reaction allowed us to access the key 2,3-dehydroallosecurinine (112). Divergent synthesis of secu'amamine A (62) and fluvirosaones A (60) and B (61) was accomplished by exploiting the versatile reactivities of the C2/C3 enamine moiety in 112. We have also employed a fragment-coupling strategy between menisdaurilide and piperidine units, which allowed the installation of various oxygen-containing functionality on the piperidine ring. Combined with the late-stage, light-mediated epimerization and well-orchestrated oxidative modifications, collective total synthesis of seven C4-oxygenated securinine-type natural products was achieved. Lastly, the synthesis of flueggeacosine B (70) via two synthetic routes from allosecurinine (103) was illustrated. The first-generation synthesis (seven overall steps) employing Pd-catalyzed cross-coupling between stannane and thioester to form the key C3-C15' bond enabled the structural revision of the natural product. In the second-generation synthesis, we have invented visible-light-mediated, Cu-catalyzed cross-dehydrogenative coupling (CDC) between an aldehyde and electron-deficient olefin, which streamlined the synthetic pathway into four overall steps. Organisms frequently utilize dimerization (oligomerization) and oxidations during the biosynthesis as a means to expand the chemical space of their secondary metabolites. Therefore, methods and strategies for dimerizations and oxidations that we have developed using the Securinega alkaloids as a platform would be broadly applicable to other alkaloids. It is our sincere hope that lessons we have learned during our synthetic journey would benefit other chemists working on organic synthesis.
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Affiliation(s)
- Gyumin Kang
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sangbin Park
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sunkyu Han
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea
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4
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Pham TL, Sae-Lao P, Toh HHM, Csókás D, Bates RW. The Total Synthesis of Raistrickindole A. J Org Chem 2022; 87:16111-16114. [PMID: 36367299 DOI: 10.1021/acs.joc.2c02033] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The total synthesis of raistrickindole A has been achieved, thereby confirming the proposed structure as an N-hydroxylated DKP. In the first but less selective approach, the DKP was built up by cyclization of a diastereoisomerically mixed N-hydroxylated dipeptide. In the second approach, the same DKP was constructed stereoselectively by the intramolecular Mitsunobu reaction of a hydroxamic acid. The synthesis was completed by a stereoselective oxidative cyclization.
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Affiliation(s)
- Thang Loi Pham
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Patcharaporn Sae-Lao
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Hannah Hui Min Toh
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Dániel Csókás
- Theoretical Chemistry Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Magyar Tudósok krt. 2, Budapest 1117, Hungary
| | - Roderick W Bates
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
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5
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Total synthesis and antimicrobial evaluation of (+)-hygrophorone B 12 and its analogues. Sci Rep 2022; 12:7471. [PMID: 35523990 PMCID: PMC9076842 DOI: 10.1038/s41598-022-11608-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 04/22/2022] [Indexed: 11/09/2022] Open
Abstract
This paper describes the synthesis and evaluation of lead compounds with a new chemical skeleton that is not found in conventional antimicrobial agents. The biologically attractive cyclopentenoid (+)-hygrophorone B12, isolated from the fruiting bodies of Hygrophorus abieticola, and its analogues were synthesized in a longer linear sequence of twelve steps, starting from a cyclopentenone derivative. This synthesis involved the following crucial steps: (i) oximation of a ketone to stabilize the requisite aldehyde to install a side chain and (ii) coupling of an aldehyde with a side chain to assemble the desired hygrophorone. Then, the antimicrobial activity of these hygrophorones towards clinically relevant bacterial pathogens was evaluated. The results showed that hygrophorone B12 and its analogues are especially effective in preventing the proliferation of gram-positive bacteria. In addition, it was found that some structural features such as the presence of the enone moiety as well as the carbon-carbon triple bond on the hydrocarbon chain were pivotal to increase the antimicrobial activity of hygrophorone B. This study is expected to support the development of novel antimicrobial agents by flexibly synthesizing hygrophorone B analogues with a carbon five-membered ring skeleton from the common intermediate.
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6
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Gao Z, Ren L, Wang R, Shi L, Wang Y, Su F, Hao HD. Total Synthesis of (±)-Codonopiloneolignanin A. Org Lett 2021; 23:5684-5688. [PMID: 34251830 DOI: 10.1021/acs.orglett.1c01803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An intramolecular formal [3 + 2] cationic cycloaddition between benzylic carbocation and styrene was developed for the total synthesis of codonopiloneolignanin A. Further study shows benzocycloheptene as a good substrate for 1,3-dipolar cycloaddition, and a model study toward cephalocyclidine A skeleton was reported.
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Affiliation(s)
- Zhiyu Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Li Ren
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ruizhi Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Liang Shi
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yanhai Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Feng Su
- Department of Chemistry, Changzhi University, Changzhi 046011, Shanxi China
| | - Hong-Dong Hao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China.,State Key Laboratory of Bioorganic & Natural Products Chemistry, Shanghai Institute of Organic Chemistry (SIOC), Chinese Academy of Science, Shanghai 200032, China
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7
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Delayre B, Wang Q, Zhu J. Natural Product Synthesis Enabled by Domino Processes Incorporating a 1,2-Rearrangement Step. ACS CENTRAL SCIENCE 2021; 7:559-569. [PMID: 34056086 PMCID: PMC8155462 DOI: 10.1021/acscentsci.1c00075] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Indexed: 05/07/2023]
Abstract
The art of natural product total synthesis is closely associated with two major determinants: the development/application of novel chemical reactions and the innovation in strategic use of classic organic reactions. While purposely seeking/applying a new synthetic methodology allowing nonconventional bond disconnections could shorten the synthetic route, the development of domino processes composed of a series of well-established reactions could also lead to a concise, practical, and aesthetically appealing synthesis. As an important class of textbook reactions, the 1,2-anionotropic rearrangements discovered at the dawn of modern organic chemistry have important bearings not only on chemical synthesis but also on the conceptual breakthroughs in the field. In its basic form, the 1,2-shift affords nothing but a constitutional isomer of the starting material and is therefore not a complexity-generating transformation. However, such a simple 1,2-shift could in fact change the molecular topology if the precursor is cleverly designed. More dramatically, it can metamorphosize the structure of the substrate when it is combined with other transformations in a domino sequence. In this Outlook, we highlight recent examples of natural product synthesis featuring a key domino process incorporating a 1,2-anionotropic rearrangement. Specifically, domino reactions integrating Wagner-Meerwein, pinacol, α-ketol, α-aminoketone, α-iminol, or benzilic acid rearrangements will be discussed.
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8
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Kang G, Park S, Han S. The Chemistry of High‐Oxidation State Securinega Alkaloids. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001610] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gyumin Kang
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141, Republic of Korea E-mail: synthesis.kaist.ac.kr
| | - Sangbin Park
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141, Republic of Korea E-mail: synthesis.kaist.ac.kr
| | - Sunkyu Han
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141, Republic of Korea E-mail: synthesis.kaist.ac.kr
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9
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Jiang Y, McNamee RE, Smith PJ, Sozanschi A, Tong Z, Anderson EA. Advances in polycyclization cascades in natural product synthesis. Chem Soc Rev 2021; 50:58-71. [DOI: 10.1039/d0cs00768d] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Cascade reactions are among the most powerful means to achieve the construction of multiple ring systems in a single step. This tutorial review describes recent advances in the use of polycyclization cascades in natural product synthesis.
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Affiliation(s)
- Yubo Jiang
- Chemistry Research Laboratory
- Oxford
- UK
- Faculty of Science
- Kunming University of Science and Technology
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10
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Xu J, Yang H, He L, Huang L, Shen J, Li W, Zhang P. Synthesis of ( E)-Quinoxalinone Oximes through a Multicomponent Reaction under Mild Conditions. Org Lett 2020; 23:195-201. [PMID: 33354970 DOI: 10.1021/acs.orglett.0c03918] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Herein, a novel method for the gram-scale synthesis of (E)-quinoxalinone oximes through a multicomponent reaction under mild conditions is described. Such a transformation was performed under transition-metal-free conditions, affording (E)-oximes in a moderate-to-good yield through recrystallization. Our methodology demonstrates a successful combination of a Mannich-type reaction and radical coupling, providing a green and practical approach for the synthesis of potentially bioactive quinoxalinone-containing molecules.
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Affiliation(s)
- Jun Xu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Huiyong Yang
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Lei He
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Lin Huang
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Jiabin Shen
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Wanmei Li
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Pengfei Zhang
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
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11
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Allen MA, Ivanovich RA, Beauchemin AM. O-Isocyanates as Uncharged 1,3-Dipole Equivalents in [3+2] Cycloadditions. Angew Chem Int Ed Engl 2020; 59:23188-23197. [PMID: 32767511 DOI: 10.1002/anie.202007942] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Indexed: 11/10/2022]
Abstract
1,3-Dipoles are commonly used in [3+2] cycloadditions, whereas isoelectronic uncharged dipole variants remain underdeveloped. In contrast to conventional 1,3-dipoles, uncharged dipole equivalents form zwitterionic cycloadducts, which can be exploited to build further molecular complexity. In this work, the first cycloadditions of oxygen-substituted isocyanates (O-isocyanates) were studied experimentally and by DFT calculations. This unique cycloaddition strategy provides access to a novel class of heterocycle aza-oxonium ylides through intramolecular and intermolecular cycloadditions with alkenes. This allowed a systematic study of the reactivity of the transient aza-oxonium ylide intermediate, which can undergo N-O bond cleavage followed by nitrene C-H insertion, and the formation of β-lactams or isoxazolidinones upon varying the structure of the alkene or O-isocyanate reagents.
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Affiliation(s)
- Meredith A Allen
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 150 Louis-Pasteur Pvt, Ottawa, ON, K1N 6N5, Canada
| | - Ryan A Ivanovich
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 150 Louis-Pasteur Pvt, Ottawa, ON, K1N 6N5, Canada
| | - André M Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 150 Louis-Pasteur Pvt, Ottawa, ON, K1N 6N5, Canada
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12
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Allen MA, Ivanovich RA, Beauchemin AM. O
‐Isocyanates as Uncharged 1,3‐Dipole Equivalents in [3+2] Cycloadditions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007942] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Meredith A. Allen
- Centre for Catalysis Research and Innovation Department of Chemistry and Biomolecular Sciences University of Ottawa 150 Louis-Pasteur Pvt Ottawa ON K1N 6N5 Canada
| | - Ryan A. Ivanovich
- Centre for Catalysis Research and Innovation Department of Chemistry and Biomolecular Sciences University of Ottawa 150 Louis-Pasteur Pvt Ottawa ON K1N 6N5 Canada
| | - André M. Beauchemin
- Centre for Catalysis Research and Innovation Department of Chemistry and Biomolecular Sciences University of Ottawa 150 Louis-Pasteur Pvt Ottawa ON K1N 6N5 Canada
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13
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Lambert KM, Cox JB, Liu L, Jackson AC, Yruegas S, Wiberg KB, Wood JL. Total Synthesis of (±)‐Phyllantidine: Development and Mechanistic Evaluation of a Ring Expansion for Installation of Embedded Nitrogen‐Oxygen Bonds. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003829] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Kyle M. Lambert
- Department of Chemistry and Biochemistry Baylor University One Bear Place 97348 Waco TX 76798 USA
| | - Joshua B. Cox
- Department of Chemistry and Biochemistry Baylor University One Bear Place 97348 Waco TX 76798 USA
| | - Lin Liu
- Department of Chemistry and Biochemistry Baylor University One Bear Place 97348 Waco TX 76798 USA
| | - Amy C. Jackson
- Department of Chemistry and Biochemistry Baylor University One Bear Place 97348 Waco TX 76798 USA
| | - Sam Yruegas
- Department of Chemistry and Biochemistry Baylor University One Bear Place 97348 Waco TX 76798 USA
| | - Kenneth B. Wiberg
- Department of Chemistry Yale University New Haven CT 06520 USA
- 865 Central Avenue Needham MA 02492 USA
| | - John L. Wood
- Department of Chemistry and Biochemistry Baylor University One Bear Place 97348 Waco TX 76798 USA
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14
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Lambert KM, Cox JB, Liu L, Jackson AC, Yruegas S, Wiberg KB, Wood JL. Total Synthesis of (±)-Phyllantidine: Development and Mechanistic Evaluation of a Ring Expansion for Installation of Embedded Nitrogen-Oxygen Bonds. Angew Chem Int Ed Engl 2020; 59:9757-9766. [PMID: 32271982 DOI: 10.1002/anie.202003829] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 04/05/2020] [Indexed: 11/06/2022]
Abstract
The development of a concise total synthesis of (±)-phyllantidine (1), a member of the securinega family of alkaloids containing an unusual oxazabicyclo[3.3.1]nonane core, is described. The synthesis employs a unique synthetic strategy featuring the ring expansion of a substituted cyclopentanone to a cyclic hydroxamic acid as a key step that allows facile installation of the embedded nitrogen-oxygen (N-O) bond. The optimization of this sequence to effect the desired regiochemical outcome and its mechanistic underpinnings were assessed both computationally and experimentally. This synthetic approach also features an early-stage diastereoselective aldol reaction to assemble the substituted cyclopentanone, a mild reduction of an amide intermediate without N-O bond cleavage, and the rapid assembly of the butenolide found in (1) via use of the Bestmann ylide.
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Affiliation(s)
- Kyle M Lambert
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place 97348, Waco, TX, 76798, USA
| | - Joshua B Cox
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place 97348, Waco, TX, 76798, USA
| | - Lin Liu
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place 97348, Waco, TX, 76798, USA
| | - Amy C Jackson
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place 97348, Waco, TX, 76798, USA
| | - Sam Yruegas
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place 97348, Waco, TX, 76798, USA
| | - Kenneth B Wiberg
- Department of Chemistry, Yale University, New Haven, CT, 06520, USA.,865 Central Avenue, Needham, MA, 02492, USA
| | - John L Wood
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place 97348, Waco, TX, 76798, USA
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15
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Shao H, Fang K, Wang YP, Zhang XM, Ding TM, Zhang SY, Chen ZM, Tu YQ. Total Synthesis of Fawcettimine-Type Alkaloid, Lycojaponicumin A. Org Lett 2020; 22:3775-3779. [PMID: 32330061 DOI: 10.1021/acs.orglett.0c00961] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The efficient total synthesis of lycojaponicumin A (1) has been accomplished for the first time. The remarkable features of this novel strategy include the following: (1) rapid construction of tricyclic intermediate 4 through a regio- and stereoselective semipinacol ring expansion, which simplified the construction of rings A and B of 1; (2) the subsequent regio- and stereoselective formation of the highly strained rings C-E of 1 through a tandem oxa-hetero [3 + 2] cycloaddition/N-cycloalkylation.
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Affiliation(s)
- Hui Shao
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Kun Fang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China, 730000
| | - Yun-Peng Wang
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China, 730000
| | - Tong-Mei Ding
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Shu-Yu Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Zhi-Min Chen
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240
| | - Yong-Qiang Tu
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, P. R. China, 200240.,State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China, 730000
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16
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Wu ZL, Huang XJ, Hu LJ, Zhang WY, Xie QJ, Jiang RW, Wang Y, Ye WC. Absolute Configurations and Stereochemical Inversion Mechanism of Epimeric Securinega Alkaloids from Flueggea suffruticosa. Org Lett 2020; 22:3673-3678. [PMID: 32319780 DOI: 10.1021/acs.orglett.0c01167] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Three pairs of Securinega alkaloid epimers with a piperidin-2-yl moiety (1-6) were isolated from Flueggea suffruticosa, and their structures including absolute configurations were definitely characterized. An interconvertible C-2' epimerization process within each pair of epimers was observed. The following comprehensive experimental and theoretical investigations demonstrated an unusual stereochemical inversion mechanism of an N-substituted carbon stereogenic center, which was evidenced to be a protic solvent mediated process involving a tandem 1,4-elimination/1,4-addition as the key step.
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Affiliation(s)
- Zhen-Long Wu
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Xiao-Jun Huang
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Li-Jun Hu
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Wei-Yan Zhang
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Qiu-Jie Xie
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Ren-Wang Jiang
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Ying Wang
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Wen-Cai Ye
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
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17
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Biosynthetically Inspired Syntheses of Secu′amamine A and Fluvirosaones A and B. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916613] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Lee S, Kang G, Chung G, Kim D, Lee H, Han S. Biosynthetically Inspired Syntheses of Secu′amamine A and Fluvirosaones A and B. Angew Chem Int Ed Engl 2020; 59:6894-6901. [DOI: 10.1002/anie.201916613] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 02/08/2020] [Indexed: 01/18/2023]
Affiliation(s)
- Sanghyeon Lee
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Gyumin Kang
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon FunctionalizationsInstitute for Basic Science (IBS) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Garam Chung
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Dongwook Kim
- Center for Catalytic Hydrocarbon FunctionalizationsInstitute for Basic Science (IBS) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Hee‐Yoon Lee
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Sunkyu Han
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon FunctionalizationsInstitute for Basic Science (IBS) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
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19
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Shinoda M, Morita N, Tanaka Iii K, Hashimoto Y, Ban S, Tamura O. Synthesis and Formation Mechanism of a Compound with an Unprecedented Skeleton: Dodecahydro-4,10:5,9-diepoxydipyrrolo[3,4-b:3',4'-f][1,5]diazocine. Chem Pharm Bull (Tokyo) 2020; 68:1238-1243. [PMID: 33268656 DOI: 10.1248/cpb.c20-00561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The reaction of N-(2-{[(tert-butyldimethylsilyl)oxy]imino}ethyl)-4-methyl-N-(3-phenylprop-2-yn-1-yl)benzenesulfonamide (6b) with BF3·OEt2 afforded a compound with an unprecedented dodecahydro-4,10 : 5,9-diepoxydipyrrolo[3,4-b:3',4'-f][1,5]diazocine skeleton (7) after aqueous work-up. The formation mechanism of meso-7 appears to involve dimerization of the hydrated forms (6aS)-C and (6aR)-C of the initial racemic product 9 via cation B generated by facile protonation at the C3a position of 9. Extensive computational studies revealed that the driving force of the facile hydration of 9 is probably release of the ring strain of 9, which arises in part from the bent sp2-hybridized C3a carbon.
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20
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Zhu Z, Chen C, Jiang J, Zhang Q, Du Z, Wei S, Song X, Tang J, Lei J, Ke Z, Zou Y. Synthesis and biological evaluation of suffrutines A, B and their N-fused analogues. Org Chem Front 2020. [DOI: 10.1039/d0qo00050g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The synthesis, structure confirmation, stability and isomerization features of suffrutines A, B and their N-fused analogues were reported. Biological tests showed that the introduction of nitrogen atom might be beneficial to the anticancer activity.
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Affiliation(s)
- Zefeng Zhu
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510000
- P. R. China
| | - Chun Chen
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510000
- P. R. China
| | - Jingxing Jiang
- School of Chemistry
- Sun Yat-sen University
- Guangzhou 510000
- P. R. China
| | - Qianzhong Zhang
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510000
- P. R. China
| | - Zhibo Du
- Zhongshan WanHan Pharmceutical Co
- Ltd
- Zhongshan 528451
- P. R. China
| | - Shuxian Wei
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510000
- P. R. China
| | - Xianheng Song
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510000
- P. R. China
| | - Jie Tang
- Pharmacy Department of Nanchong Central Hospital and the Second Clinical Hospital of North Sichuan Medical College
- Nanchong
- P. R. China
| | - Jinping Lei
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510000
- P. R. China
| | - Zhuofeng Ke
- School of Chemistry
- Sun Yat-sen University
- Guangzhou 510000
- P. R. China
| | - Yong Zou
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510000
- P. R. China
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21
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Antien K, Lacambra A, Cossío FP, Massip S, Deffieux D, Pouységu L, Peixoto PA, Quideau S. Bio‐inspired Total Synthesis of Twelve
Securinega
Alkaloids: Structural Reassignments of (+)‐Virosine B and (−)‐Episecurinol A. Chemistry 2019; 25:11574-11580. [DOI: 10.1002/chem.201903122] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 07/19/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Kevin Antien
- Univ. Bordeaux, ISM (CNRS-UMR 5255) 351 cours de la Libération 33405 Talence Cedex France
| | - Aitor Lacambra
- Univ. Bordeaux, ISM (CNRS-UMR 5255) 351 cours de la Libération 33405 Talence Cedex France
- Departamento de Química Orgánica IUniversidad del País Vasco Avda. Tolosa 72, Edificio Korta 20018 San Sebastián Spain
| | - Fernando P. Cossío
- Departamento de Química Orgánica IUniversidad del País Vasco Avda. Tolosa 72, Edificio Korta 20018 San Sebastián Spain
| | - Stéphane Massip
- Univ. BordeauxInstitut Européen de Chimie et Biologie (CNRS-UMS 3033) 2 rue Robert Escarpit 33607 Pessac Cedex France
| | - Denis Deffieux
- Univ. Bordeaux, ISM (CNRS-UMR 5255) 351 cours de la Libération 33405 Talence Cedex France
| | - Laurent Pouységu
- Univ. Bordeaux, ISM (CNRS-UMR 5255) 351 cours de la Libération 33405 Talence Cedex France
| | - Philippe A. Peixoto
- Univ. Bordeaux, ISM (CNRS-UMR 5255) 351 cours de la Libération 33405 Talence Cedex France
| | - Stéphane Quideau
- Univ. Bordeaux, ISM (CNRS-UMR 5255) 351 cours de la Libération 33405 Talence Cedex France
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22
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Naumovich YA, Ioffe SL, Sukhorukov AY. Michael Addition of P-Nucleophiles to Conjugated Nitrosoalkenes. J Org Chem 2019; 84:7244-7254. [PMID: 31063688 DOI: 10.1021/acs.joc.9b00924] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A general approach to various α-phosphorus-substituted oximes (β-oximinoalkyl-substituted phosphonates, phosphine oxides, phosphine-borane complexes, and phosphonium salts) was developed. The strategy exploits hitherto unknown Michael addition of PH-containing compounds (diphenylphosphine oxide, diisopropyl phosphite, phosphine-borane complexes, and triphenylphosphonium bromide) to unstable conjugated nitrosoalkenes, which are generated in situ from corresponding nitrosoacetals. The resulting α-phosphorus-substituted oximes can be considered as useful P-, N-, and O-ligands for catalysis and precursors to valuable β-aminophosphonates.
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Affiliation(s)
- Yana A Naumovich
- N. D. Zelinsky Institute of Organic Chemistry , Leninsky Prospect, 47 , Moscow 119991 , Russia
| | - Sema L Ioffe
- N. D. Zelinsky Institute of Organic Chemistry , Leninsky Prospect, 47 , Moscow 119991 , Russia
| | - Alexey Yu Sukhorukov
- N. D. Zelinsky Institute of Organic Chemistry , Leninsky Prospect, 47 , Moscow 119991 , Russia.,Higher Chemical College , D. Mendeleev University of Chemical Technology of Russia , Miusskaya sq., 9 , Moscow 125047 , Russia.,Plekhanov Russian University of Economics , Stremyanny per. 36 , Moscow 117997 , Russia
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23
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Jiao B, Peng Z, Dai ZH, Li L, Wang H, Zhou MD. Palladium-Catalyzed meta
-Selective C-H Alkenylation and Acetoxylation of Arylacetic Acid Using a Pyrimidine Template. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900480] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bo Jiao
- Liaoning Shihua University; School of Chemistry and Materials Science; Dandong Road 1 113001 Fushun P. R. China
| | - Zhen Peng
- Liaoning Shihua University; School of Chemistry and Materials Science; Dandong Road 1 113001 Fushun P. R. China
| | - Zhen-Hua Dai
- Liaoning Shihua University; School of Chemistry and Materials Science; Dandong Road 1 113001 Fushun P. R. China
| | - Lei Li
- Liaoning Shihua University; School of Chemistry and Materials Science; Dandong Road 1 113001 Fushun P. R. China
| | - He Wang
- Liaoning Shihua University; School of Chemistry and Materials Science; Dandong Road 1 113001 Fushun P. R. China
| | - Ming-Dong Zhou
- Liaoning Shihua University; School of Chemistry and Materials Science; Dandong Road 1 113001 Fushun P. R. China
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24
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Hung K, Condakes ML, Novaes LFT, Harwood SJ, Morikawa T, Yang Z, Maimone TJ. Development of a Terpene Feedstock-Based Oxidative Synthetic Approach to the Illicium Sesquiterpenes. J Am Chem Soc 2019; 141:3083-3099. [PMID: 30698435 DOI: 10.1021/jacs.8b12247] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The Illicium sesquiterpenes are a family of natural products containing over 100 highly oxidized and structurally complex members, many of which display interesting biological activities. This comprehensive account chronicles the evolution of a semisynthetic strategy toward these molecules from (+)-cedrol, seeking to emulate key aspects of their presumed biosynthesis. An initial route generated lower oxidation state analogs but failed in delivering a crucial hydroxy group in the final step. Insight gathered during these studies, however, ultimately led to a synthesis of the pseudoanisatinoids along with the allo-cedrane natural product 11- O-debenzoyltashironin. A second-generation strategy was then developed to access the more highly oxidized majucinoid compounds including jiadifenolide and majucin itself. Overall, one dozen natural products can be accessed from an abundant and inexpensive terpene feedstock. A multitude of general observations regarding site-selective C(sp3)-H bond functionalization reactions in complex polycyclic architectures are reported.
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Affiliation(s)
- Kevin Hung
- Department of Chemistry , University of California, Berkeley , 826 Latimer Hall , Berkeley , California 94720 , United States
| | - Matthew L Condakes
- Department of Chemistry , University of California, Berkeley , 826 Latimer Hall , Berkeley , California 94720 , United States
| | - Luiz F T Novaes
- Department of Chemistry , University of California, Berkeley , 826 Latimer Hall , Berkeley , California 94720 , United States
| | - Stephen J Harwood
- Department of Chemistry , University of California, Berkeley , 826 Latimer Hall , Berkeley , California 94720 , United States
| | - Takahiro Morikawa
- Department of Chemistry , University of California, Berkeley , 826 Latimer Hall , Berkeley , California 94720 , United States
| | - Zhi Yang
- Department of Chemistry , University of California, Berkeley , 826 Latimer Hall , Berkeley , California 94720 , United States
| | - Thomas J Maimone
- Department of Chemistry , University of California, Berkeley , 826 Latimer Hall , Berkeley , California 94720 , United States
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25
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Alkayar ZTI, Coldham I. Cascade cyclization and intramolecular nitrone dipolar cycloaddition and formal synthesis of 19-hydroxyibogamine. Org Biomol Chem 2019; 17:66-73. [PMID: 30539955 DOI: 10.1039/c8ob02839g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A cascade or domino sequence of condensation of hydroxylamine and an aldehyde to give an oxime, cyclization to a nitrone, and intramolecular 1,3-dipolar cycloaddition has been successfully employed where there is branching at C-4 as a route to the iboga alkaloids. Cyclization occurs with displacement of chloride as a leaving group and intramolecular cycloaddition occurs with an alkene as a dipolarophile. The reaction gives an azabicyclo[2.2.2]octane product containing a fused isoxazolidine as a single stereoisomer and this was converted to an isoquinuclidine that completed a formal synthesis of the alkaloid (±)-19-hydroxyibogamine.
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Affiliation(s)
- Ziad T I Alkayar
- Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK.
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26
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Lu K, Wei X, Li Q, Li Y, Ji L, Hua E, Dai Y, Zhao X. Synthesis of α-trifluoromethyl ethanone oximes via the three-component reaction of aryl-substituted ethylenes, tert-butyl nitrite, and the Langlois reagent. Org Chem Front 2019. [DOI: 10.1039/c9qo00940j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A three-component reaction of aryl-substituted ethylenes, tert-butyl nitrite, and the Langlois reagent to synthesize a-trifluoromethyl ethanone oximes was developed.
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Affiliation(s)
- Kui Lu
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry
- College of Biotechnology
- Tianjin University of Science & Technology
- Tianjin
- China
| | - Xianfu Wei
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry
- College of Biotechnology
- Tianjin University of Science & Technology
- Tianjin
- China
| | - Quan Li
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry
- College of Biotechnology
- Tianjin University of Science & Technology
- Tianjin
- China
| | - Yuxuan Li
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry
- College of Biotechnology
- Tianjin University of Science & Technology
- Tianjin
- China
| | - Liangshuo Ji
- College of Chemistry
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key laboratory of Inorganic-organic Hybrid Functional Material Chemistry
- Ministry of Education
- Tianjin Normal University
| | - Erbing Hua
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry
- College of Biotechnology
- Tianjin University of Science & Technology
- Tianjin
- China
| | - Yujie Dai
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry
- College of Biotechnology
- Tianjin University of Science & Technology
- Tianjin
- China
| | - Xia Zhao
- College of Chemistry
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key laboratory of Inorganic-organic Hybrid Functional Material Chemistry
- Ministry of Education
- Tianjin Normal University
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27
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2017. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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28
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Abrams DJ, Provencher PA, Sorensen EJ. Recent applications of C-H functionalization in complex natural product synthesis. Chem Soc Rev 2018; 47:8925-8967. [PMID: 30426998 DOI: 10.1039/c8cs00716k] [Citation(s) in RCA: 380] [Impact Index Per Article: 63.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this review, recent examples featuring C-H functionalization in the synthesis of complex natural products are discussed. A focus is given to the way in which C-H functionalization can influence the logical process of retrosynthesis, and the review is organized by the type and method of C-H functionalization.
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Affiliation(s)
- Dylan J Abrams
- Department of Chemistry, Princeton University, Princeton, NJ 08544, USA.
| | | | - Erik J Sorensen
- Department of Chemistry, Princeton University, Princeton, NJ 08544, USA.
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29
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Xing JJ, Gao YN, Shi M. Phosphine-Initiated Cascade Annulation of β′-Acetoxy Allenoate and p
-Quinols: Access to Ring Fused Hexahydroindeno Furan Derivatives. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800319] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jiao-Jiao Xing
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Yu-Ning Gao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
- State Key Laboratory and Institute of Elemento-organic Chemistry; Nankai University; Tianjin 300071 People's Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 354 Fenglin Lu Shanghai 200032 People's Republic of China
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30
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Hughes JM, Gleason JL. A bio-inspired cascade and a late-stage directed sp3 C H lithiation enables a concise total synthesis of (−)-virosaine A. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.12.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Yakura T, Nambu H. Recent topics in application of selective Rh(II)-catalyzed C H functionalization toward natural product synthesis. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.12.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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32
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Condakes M, Hung K, Harwood SJ, Maimone TJ. Total Syntheses of (-)-Majucin and (-)-Jiadifenoxolane A, Complex Majucin-Type Illicium Sesquiterpenes. J Am Chem Soc 2017; 139:17783-17786. [PMID: 29148748 PMCID: PMC5729088 DOI: 10.1021/jacs.7b11493] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Indexed: 02/08/2023]
Abstract
We report the first chemical syntheses of both (-)-majucin and (-)-jiadifenoxolane A via 10 net oxidations from the ubiquitous terpene (+)-cedrol. Additionally, this approach allows for access to other majucin-type sesquiterpenes, like (-)-jiadifenolide, (-)-jiadifenin, and (-)-(1R,10S)-2-oxo-3,4-dehydroxyneomajucin (ODNM) along the synthetic pathway. Site-selective aliphatic C(sp3)-H bond oxidation reactions serve as the cornerstone of this work which offers access to highly oxidized natural products from an abundant and renewable terpene feedstock.
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Affiliation(s)
- Matthew
L. Condakes
- Department of Chemistry, University
of California-Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
| | - Kevin Hung
- Department of Chemistry, University
of California-Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
| | - Stephen J. Harwood
- Department of Chemistry, University
of California-Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
| | - Thomas J. Maimone
- Department of Chemistry, University
of California-Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
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33
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Ellis BD, Vanderwal CD. Virosain A nach Hughes und Gleason - die Kunst der Synthese. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708051] [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]
Affiliation(s)
- Bryan D. Ellis
- Department of Chemistry; University of California; Irvine CA 92697-2025 USA
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34
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Ellis BD, Vanderwal CD. Hughes and Gleason's Virosaine A-Appreciating the Art in Synthesis. Angew Chem Int Ed Engl 2017; 56:13940-13942. [DOI: 10.1002/anie.201708051] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 09/09/2017] [Indexed: 01/05/2023]
Affiliation(s)
- Bryan D. Ellis
- Department of Chemistry; University of California; Irvine CA 92697-2025 USA
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