1
|
Suzuki H, Moro R, Matsuda T. Palladium-Catalyzed anti-Michael-Type (Hetero)arylation of Acrylamides. J Am Chem Soc 2024; 146:13697-13702. [PMID: 38742920 DOI: 10.1021/jacs.4c00841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
This paper reports a direct α-(hetero)arylation of acrylamides through an inverse electron-demand nucleophilic addition, specifically an anti-Michael-type addition. The introduction of a quinolyl directing group facilitates the nucleophilic addition of (hetero)arenes to the α-position of acrylamides. The quinolyl directing group effectively suppresses undesired β-hydrogen elimination and is removable for subsequent derivatization. The presented method provides an atom economical synthesis of α-(hetero)arylamide with a high degree of functional group tolerance.
Collapse
Affiliation(s)
- Hirotsugu Suzuki
- Tenure-Track Program for Innovative Research, University of Fukui, 3-9-1 Bunkyo, Fukui-shi, Fukui 910-8507, Japan
| | - Ryota Moro
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Takanori Matsuda
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| |
Collapse
|
2
|
Zhao S, Yue W, Yang M, Li X, Chen B, Gao Y, Yu W, Ni HL, Hu P, Wang BQ, Cao P. Enantioselective Ir-Catalyzed Allyl Alkylation/Semipinacol Rearrangement. Org Lett 2024; 26:1224-1228. [PMID: 38305744 DOI: 10.1021/acs.orglett.4c00025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
The semipinacol rearrangement is a powerful and versatile method for constructing all-carbon quaternary stereocenters. The development of catalytic asymmetric semipinacol rearrangements using multifunctionalizable electrophiles remains highly sought-after in organic synthesis. In this study, a catalytic enantioselective allylic cation-induced semipinacol rearrangement reaction was presented that enables the simultaneous construction of two skipped chiral carbon centers. Chiral Ir(I)-(P,olefin) and Sc(OTf)3 catalysts cooperatively initiate the asymmetric allylic alkylation of alkenyl cyclobutanols with allylic alcohols, triggering ring expansion of the cyclobutanol moiety through a stereoselective 1,2-alkyl migration. The reaction afforded a range of cyclopentanones bearing an α-quaternary carbon that is adjacent to a chiral allyl scaffold. The products were applied to synthesize enantioenriched fused tricyclopentanoids bearing four stereogenic carbon centers.
Collapse
Affiliation(s)
- Sumei Zhao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Wenxing Yue
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Min Yang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Xuanfeng Li
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Bin Chen
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Yuanji Gao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Wenhao Yu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Hai-Liang Ni
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Ping Hu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Bi-Qin Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Peng Cao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| |
Collapse
|
3
|
Li C, Lu F, Cai Y, Zhang C, Shao Y, Zhang Y, Liu XY, Qin Y. Catalytic Asymmetric Total Synthesis of (-)-Garryine via an Enantioselective Heck Reaction. J Am Chem Soc 2024; 146:1081-1088. [PMID: 38113465 DOI: 10.1021/jacs.3c12171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
The first asymmetric total synthesis of the hexacyclic veatchine-type C20-diterpenoid alkaloid (-)-garryine is presented. Key steps include a Pd-catalyzed enantioselective Heck reaction, a radical cyclization, and a photoinduced C-H activation/oxazolidine formation sequence. Of note, a highly enantioselective Heck reaction developed in this work provides efficient access to 6/6/6 tricyclic compounds, in particular, containing a C19-functionalitiy, which is useful for diverse transformations.
Collapse
Affiliation(s)
- Chuang Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Fei Lu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yukun Cai
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Cheng Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yu Shao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yuanyuan Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xiao-Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| |
Collapse
|
4
|
Udayanga DMN, Le N, Schwirian EN, Donnadieu B, Nash K, Collier W, Webster CE, Cui X. Synthesis of N-Fused Polycyclic Indole Derivatives via Ru(II)-Catalyzed C-H Bond Activation and Intramolecular Hydroarylation. Org Lett 2023. [PMID: 38032145 DOI: 10.1021/acs.orglett.3c03757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
A new synthesis of N-fused tetracyclic indole derivatives and their related polycyclic analogues has been developed based on ruthenium(II)-catalyzed C-H activation and intramolecular hydroarylation. A series of polycyclic indoles with a 3-formyl group have been prepared in good to high yields. Various aliphatic and aromatic amines have been studied to form a transient directing group with the aldehyde for the catalytic process. A significant impact of the structures of the aromatic amines was identified, and 1-naphthylamine was shown to enable the catalytic process. DFT computations were performed to gain further insight into the role of the transient directing groups.
Collapse
Affiliation(s)
- D M Nirosh Udayanga
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Nghia Le
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Elijah N Schwirian
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Bruno Donnadieu
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Kye Nash
- Department of Chemistry, Tuskegee University, Tuskegee, Alabama 36088, United States
| | - Willard Collier
- Department of Chemistry, Tuskegee University, Tuskegee, Alabama 36088, United States
| | - Charles Edwin Webster
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Xin Cui
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| |
Collapse
|
5
|
Tufano E, Lee E, Barilli M, Casali E, Oštrek A, Jung H, Morana M, Kang J, Kim D, Chang S, Zanoni G. Iridium Acylnitrenoid-Initiated Biomimetic Cascade Cyclizations: Stereodefined Access to Polycyclic δ-Lactams. J Am Chem Soc 2023. [PMID: 37926946 DOI: 10.1021/jacs.3c08331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
Ring-fused azacyclic compounds are important building units in the synthesis of biorelevant natural products, pharmaceutical agents, and molecular materials. Herein, we present a new approach to these condensed azacycles by a biomimetic cascade cyclization of arylalkenyl dioxazolones. This cascade reaction was found to proceed with excellent stereoselectivity and a high functional group tolerance. The substrate scope of arylalkenyl dioxazolones turned out to be highly flexible and extendable to additional terminating subunits, such as heteroaryl and alkynyl moieties. This biomimetic cyclization was elucidated to be initiated by an intramolecular transfer of the in situ generated electrophilic Ir-acylnitrenoid to the tethered olefinic double bond, leading to a key N-acylaziridine intermediate, which is in turn reacted with pendant (hetero)arenes or alkynes in a highly regio- and stereoselective manner to produce ring-fused azacyclic compounds.
Collapse
Affiliation(s)
- Eleonora Tufano
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Euijae Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Matteo Barilli
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Emanuele Casali
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Andraž Oštrek
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Hoimin Jung
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Marta Morana
- Department of Earth Science, University of Firenze, Via G. La Pira 4, 50121 Firenze, Italy
| | - Jihye Kang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Dongwook Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Giuseppe Zanoni
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| |
Collapse
|
6
|
Zheng TL, Huo CY, Bao W, Xu XT, Dai WH, Cheng F, Duan DS, Yang LL, Zhang XM, Zhu DY, Wang SH. Au-Catalyzed Asymmetric Polyene Cyclization and Its Application in the Total Synthesis of (+)-2-Ketoferruginol, (+)-Fleuryinol B, (+)-Salviol, and (-)-Erythroxylisin A. Org Lett 2023; 25:7476-7480. [PMID: 37811851 DOI: 10.1021/acs.orglett.3c02417] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
A catalytic asymmetric 1,3-acyloxy shift/polyene cyclization cascade has been achieved with good enantioselectivities under the catalysis of the chiral Au(I) reagent. The synthetic utility of this method has been showcased by the catalytic asymmetric total syntheses of (+)-2-ketoferruginol, (+)-fleuryinol B, and (+)-salviol. Notably, the first enantioselective total synthesis of (-)-erythroxylisin A has also been realized in 15 steps.
Collapse
Affiliation(s)
- Tian-Lu Zheng
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Chen-Yu Huo
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Wen Bao
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Xue-Tao Xu
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020,P. R. China
| | - Wei-Hao Dai
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Fu Cheng
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Dong-Sen Duan
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Le-Le Yang
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Xiao-Ming Zhang
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Dao-Yong Zhu
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Shao-Hua Wang
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020,P. R. China
| |
Collapse
|
7
|
Warnica JM, Gleason JL. Mimicking enzymatic cation-π interactions in hydrazide catalyst design: access to trans-decalin frameworks. Chem Commun (Camb) 2023; 59:10496-10499. [PMID: 37559565 DOI: 10.1039/d3cc03351a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Chiral bicyclic hydrazide organocatalysts have previously been shown to catalyze the cyclization of (Z)-polyene substrates with high enantioselectivity, but with poor selectivity for the corresponding (E)-polyenes. Here we demonstrate that diazapane carboxylates bearing terphenyl groups efficiently catalyze (E)-polyene bicyclization with enantioselectivities up to 94 : 6 er and with high diastereoselectivity for trans-decalin formation. The catalysts function by simultaneously initiating the cyclization via iminium ion formation and stabilizing intermediates/transition states by cation-π interactions.
Collapse
Affiliation(s)
- Josephine M Warnica
- Department of Chemistry, McGill University, 801 Sherbrooke W., Montreal, QC, H3A 0B8, Canada.
| | - James L Gleason
- Department of Chemistry, McGill University, 801 Sherbrooke W., Montreal, QC, H3A 0B8, Canada.
| |
Collapse
|
8
|
Kratena N, Weil M, Gärtner P. A biomimetic approach for the concise total synthesis of greenwaylactams A-C. Org Biomol Chem 2023; 21:6317-6319. [PMID: 37496493 PMCID: PMC10410498 DOI: 10.1039/d3ob01001e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 07/24/2023] [Indexed: 07/28/2023]
Abstract
A concise, racemic total synthesis of three sesquiterpenoid alkaloids (greenwaylactams A-C) exhibiting an unprecedented 8-membered benzolactam is disclosed. Key transformations of this work include the ring expansion through cleavage of an indole via Witkop oxidation, as well as an HFIP mediated cationic cyclisation to build up the pentacyclic carbon skeleton.
Collapse
Affiliation(s)
- Nicolas Kratena
- Institute for Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria.
| | - Matthias Weil
- Institute of Chemical Technologies and Analytics, TU Wien, Getreidemarkt 9/164, 1060 Vienna, Austria
| | - Peter Gärtner
- Institute for Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria.
| |
Collapse
|
9
|
Pan B, Qian X, Zhang Y, Jiang L, Cao R, Qiu L. Iridium-Catalyzed Intramolecular Asymmetric Allylic Etherification of Pyrimidinemethanols: Enantioselective Construction of Multifunctionalized Pyrimidine-Fused Oxazepines. Org Lett 2023. [PMID: 37450016 DOI: 10.1021/acs.orglett.3c01962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
An iridium-catalyzed intramolecular asymmetric allylic etherification of pyrimidinemethanols is described. In the presence of chiral-bridged biphenyl phosphoramidite ligand L3 and triethylborane, this process provided a class of novel pyrimidine-fused oxazepanes in up to 99% yield with 99.5% enantiomeric excess. The work addresses the challenge of insufficient nucleophilicity of aliphatic alcohols for allyl substitution and indicates the vital value of chiral-bridged biphenyl phosphoramidites. Various multifunctionalized transformations of the products further demonstrate the robust synthetic utility of this methodology.
Collapse
Affiliation(s)
- Bendu Pan
- School of Chemistry, IGCME, Guangdong Key Lab of Chiral Molecules and Drug Discovery, Sun Yat-sen University, Guangzhou 510006, China
| | - Xu Qian
- School of Chemistry, IGCME, Guangdong Key Lab of Chiral Molecules and Drug Discovery, Sun Yat-sen University, Guangzhou 510006, China
| | - Yaqi Zhang
- School of Chemistry, IGCME, Guangdong Key Lab of Chiral Molecules and Drug Discovery, Sun Yat-sen University, Guangzhou 510006, China
| | - Long Jiang
- Instrumental Analysis and Research Centre, Sun Yat-sen University, Guangzhou 510275, China
| | - Rihui Cao
- School of Chemistry, IGCME, Guangdong Key Lab of Chiral Molecules and Drug Discovery, Sun Yat-sen University, Guangzhou 510006, China
| | - Liqin Qiu
- School of Chemistry, IGCME, Guangdong Key Lab of Chiral Molecules and Drug Discovery, Sun Yat-sen University, Guangzhou 510006, China
| |
Collapse
|
10
|
Aynetdinova D, Jacques R, Christensen KE, Donohoe TJ. Alcohols as Efficient Intermolecular Initiators for a Highly Stereoselective Polyene Cyclisation Cascade. Chemistry 2023; 29:e202203732. [PMID: 36478469 PMCID: PMC10946764 DOI: 10.1002/chem.202203732] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022]
Abstract
The use of benzylic and allylic alcohols in HFIP solvent together with Ti(Oi Pr)4 has been shown to trigger a highly stereoselective polyene cyclisation cascade. Three new carbon-carbon bonds are made during the process and complete stereocontrol of up to five new stereogenic centers is observed. The reaction is efficient, has high functional group tolerance and is atom-economic generating water as a stoichiometric by-product. A new polyene substrate-class is employed, and subsequent mechanistic studies indicate a stereoconvergent mechanism. The products of this reaction can be used to synthesize steroid-analogues in a single step.
Collapse
Affiliation(s)
- Daniya Aynetdinova
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryOxfordOX1 3TAUK
| | - Reece Jacques
- Early Chemical Development, Medicinal Chemistry R&DVertex PharmaceuticalsAbingtonOX14 4RWUK
| | | | - Timothy J. Donohoe
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryOxfordOX1 3TAUK
| |
Collapse
|
11
|
Deguchi H, Hanaya K, Sugai T, Higashibayashi S. Intramolecular cyclization of m-homoprenylphenols through oxidative nucleophilic aromatic substitution. Chem Commun (Camb) 2023; 59:748-751. [PMID: 36541374 DOI: 10.1039/d2cc06026d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We developed an intramolecular cyclization of m-homoprenylphenols and related m-prenylphenols to bicyclic skeletons by hypervalent iodine reagents through an oxidative nucleophilic aromatic substitution using the prenyl group as a carbon nucleophile. The reaction was applicable for the syntheses of 5/6-, 6/6-, and 7/6-fused ring systems.
Collapse
Affiliation(s)
- Hiroki Deguchi
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
| | - Kengo Hanaya
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
| | - Takeshi Sugai
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
| | - Shuhei Higashibayashi
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
| |
Collapse
|
12
|
Huo CY, Zheng TL, Dai WH, Zhang ZH, Wang JD, Zhu DY, Wang SH, Zhang XM, Xu XT. InI 3-catalyzed polyene cyclization of allenes and its application in the total synthesis of seven abietane-type diterpenoids. Chem Sci 2022; 13:13893-13897. [PMID: 36544726 PMCID: PMC9710309 DOI: 10.1039/d2sc04229k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022] Open
Abstract
A novel polyene cyclization using the allene group as the initiator has been successfully developed. This methodology provides an efficient strategy for the construction of an abietane-type tricyclic skeleton with a functionalizable C2-C3 double bond and features a wide substrate scope and excellent stereoselectivities. Potential utility of this approach has been well demonstrated by the collective total synthesis of seven abietane-type diterpenoids. Specifically, (±)-2,3-dihydroxyferruginol and (±)-2,3-dihydroxy-15,16-dinor-ent-pimar-8,11,13-triene were synthesized for the first time.
Collapse
Affiliation(s)
- Chen-Yu Huo
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University730000P. R. China
| | - Tian-Lu Zheng
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University730000P. R. China
| | - Wei-Hao Dai
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University730000P. R. China
| | - Zi-Hao Zhang
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University730000P. R. China
| | - Jin-Da Wang
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University730000P. R. China
| | - Dao-Yong Zhu
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University730000P. R. China,Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan UniversityChengdu610041P. R. China
| | - Shao-Hua Wang
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University730000P. R. China
| | - Xiao-Ming Zhang
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University730000P. R. China
| | - Xue-Tao Xu
- School of Biotechnology and Health Science, Wuyi UniversityJiangmen 529020P. R. China
| |
Collapse
|
13
|
Wang B, Jiang HY, Yang J, Li J, Yan BC, Chen X, Hu K, Li XR, Sun HD, Deng J, Puno PT. Isolation and Bioinspired Total Synthesis of Rugosiformisin A, A Skeleton-Rearranged Abietane-Type Diterpenoid from Isodon rugosiformis. Org Lett 2022; 24:8104-8108. [DOI: 10.1021/acs.orglett.2c02834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bin Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Hua-Yi Jiang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jin Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jun Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Bing-Chao Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Xi Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Kun Hu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Xing-Ren Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jun Deng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Pema-Tenzin Puno
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| |
Collapse
|
14
|
Tu HF, Nie YH, Zheng C, You SL. Ir‐Catalyzed Intermolecular Asymmetric Allylic Amination with Pyridones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200347] [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)
- Hang-Fei Tu
- Shanghai Institute of Organic Chemistry CHINA
| | - Yu-Han Nie
- Shanghai Institute of Organic Chemistry CHINA
| | - Chao Zheng
- Shanghai Institute of Organic Chemistry CHINA
| | - Shu-Li You
- Shanghai Institute of Organic Chemistry CHINA
| |
Collapse
|
15
|
Li L, Shan C, Shi J, Li W, Lan Y, Li Y. The Stannum-Ene Reactions of Benzyne and Cyclohexyne with Superb Chemoselectivity for Cyclohexyne. Angew Chem Int Ed Engl 2022; 61:e202117351. [PMID: 35170157 DOI: 10.1002/anie.202117351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Indexed: 12/25/2022]
Abstract
The stannum-ene reactions of both benzyne and cyclohexyne were realized, which is particularly suitable for cyclohexyne with a broad substrate scope and excellent chemoselectivity. Our DFT calculations via distortion/interaction analysis revealed that both stannum- and hydrogen-ene reactions with cyclohexyne have later transition states due to their higher distortion energies in the transition states than those in benzyne reactions, which lead to enhanced Pauli repulsion as the decisive factor in the interaction energy accompanied with enlarged energy gap between two types of ene reactions. Therefore, excellent chemoselectivity was disclosed in the cyclohexyne-ene reaction.
Collapse
Affiliation(s)
- Lianggui Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng St., Chongqing, 400030, P. R. China
| | - Chunhui Shan
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng St., Chongqing, 400030, P. R. China.,College of Chemistry, Chongqing Normal University, Chongqing, 401331, P. R. China
| | - Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng St., Chongqing, 400030, P. R. China
| | - Wensheng Li
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, P. R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng St., Chongqing, 400030, P. R. China.,Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, P. R. China
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng St., Chongqing, 400030, P. R. China.,College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| |
Collapse
|
16
|
Solans MM, Basistyi VS, Law JA, Bartfield NM, Frederich JH. Programmed Polyene Cyclization Enabled by Chromophore Disruption. J Am Chem Soc 2022; 144:6193-6199. [PMID: 35377634 PMCID: PMC10559755 DOI: 10.1021/jacs.2c02144] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A new polyene cyclization strategy exploiting β-ionyl derivatives was developed. Photoinduced deconjugation of the extended π-system within these chromophores unveils a contrathermodynamic polyene that engages in a Heck bicyclization to afford [4.4.1]-propellanes. This cascade improves upon the limited regioselectivity achieved using existing biomimetic tactics and tolerates both electron-rich and electron-deficient (hetero)aryl groups. The utility of this approach was demonstrated with the diverted total synthesis of taxodione and salviasperanol, two isomeric abietane diterpenes that were previously inaccessible along the same synthetic pathway.
Collapse
Affiliation(s)
- Megan M Solans
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Vitalii S Basistyi
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - James A Law
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Noah M Bartfield
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - James H Frederich
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| |
Collapse
|
17
|
Anticancer Activity of Natural and Semi-Synthetic Drimane and Coloratane Sesquiterpenoids. Molecules 2022; 27:molecules27082501. [PMID: 35458699 PMCID: PMC9031474 DOI: 10.3390/molecules27082501] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/09/2022] [Accepted: 04/11/2022] [Indexed: 12/12/2022] Open
Abstract
Drimane and coloratane sesquiterpenoids are present in several plants, microorganisms, and marine life. Because of their cytotoxic activity, these sesquiterpenoids have received increasing attention as a source for new anticancer drugs and pharmacophores. Natural drimanes and coloratanes, as well as their semi-synthetic derivatives, showed promising results against cancer cell lines with in vitro activities in the low micro- and nanomolar range. Despite their high potential as novel anticancer agents, the mode of action and structure–activity relationships of drimanes and coloratanes have not been completely enlightened nor systematically reviewed. Our review aims to give an overview of known structures and derivatizations of this class of sesquiterpenoids, as well as their activity against cancer cells and potential modes-of-action. The cytotoxic activities of about 40 natural and 25 semi-synthetic drimanes and coloratanes are discussed. In addition to that, we give a summary about the clinical significance of drimane and coloratane sesquiterpenoids.
Collapse
|
18
|
Affiliation(s)
- Samuel J. Plamondon
- Department of Chemistry, McGill University, 801 Sherbrooke W., Montreal, QC H3A 0B8, Canada
| | - James L. Gleason
- Department of Chemistry, McGill University, 801 Sherbrooke W., Montreal, QC H3A 0B8, Canada
| |
Collapse
|
19
|
Warnica JM, Gleason JL. The stabilized iminium catalyzed ( E)-polyene cyclization: trapping of non-activated terminating groups enabled by cation–π interactions. CAN J CHEM 2022. [DOI: 10.1139/cjc-2021-0150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A cyclic hydrazide catalyst bearing a pendant anthracene catalyzes the polyene cyclization of 1,5-hexadiene-2-carboxaldehydes. Bicyclic closure proceeds in substrates with non-activated terminating groups that fail to react with simple hydrazide catalysts. Computational analysis shows that stabilization through cation–π interactions throughout the reaction sequence leads to the enhanced reactivity of the catalyst.
Collapse
Affiliation(s)
- Josephine M. Warnica
- Department of Chemistry, McGill University, 801 Sherbrooke W., Montreal, QC H3A 0B8, Canada
- Department of Chemistry, McGill University, 801 Sherbrooke W., Montreal, QC H3A 0B8, Canada
| | - James L. Gleason
- Department of Chemistry, McGill University, 801 Sherbrooke W., Montreal, QC H3A 0B8, Canada
- Department of Chemistry, McGill University, 801 Sherbrooke W., Montreal, QC H3A 0B8, Canada
| |
Collapse
|
20
|
Li L, Shan C, Shi J, Li W, Lan Y, Li Y. The Stannum–Ene Reactions of Benzyne and Cyclohexyne with Superb Chemoselectivity for Cyclohexyne. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lianggui Li
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
| | - Chunhui Shan
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
- College of Chemistry Chongqing Normal University Chongqing 401331 P. R. China
| | - Jiarong Shi
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
| | - Wensheng Li
- College of Chemistry and Chemical Engineering Chongqing University of Technology Chongqing 400054 P. R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
- Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou Henan 450001 P. R. China
| | - Yang Li
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
- College of Chemistry Jilin University Changchun 130012 P. R. China
| |
Collapse
|
21
|
Jin M, Tang C, Li Y, Yang S, Yang YT, Peng L, Li XN, Zhang W, Zuo Z, Gagosz F, Wang LL. Enantioselective access to tricyclic tetrahydropyran derivatives by a remote hydrogen bonding mediated intramolecular IEDHDA reaction. Nat Commun 2021; 12:7188. [PMID: 34893616 PMCID: PMC8664811 DOI: 10.1038/s41467-021-27521-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 11/25/2021] [Indexed: 11/22/2022] Open
Abstract
Inverse-electron-demand-hetero-Diels-Alder reactions of alkenes with α,β-unsaturated keto compounds allow rapid access to the tetrahydropyran ring found in numerous natural products and bioactive molecules. Despite its synthetic interest, catalytic asymmetric versions of this process remain underdeveloped, especially regarding the use of non-activated alkenes reacting with α,β-unsaturated ketone or aldehyde, for which no report can be found in the literature. Herein, we describe the catalytic inverse-electron-demand-hetero-Diels-Alder reactions between neutral alkenes and an α,β-unsaturated ketones or aldehydes to produce a variety of trans-fused [5,6,8] tricyclic structures containing a central, chiral tetrahydropyran ring. This complex transformation, which is achieved using a chiral phosphoric acid, allows for the formation of four stereogenic centers in a single step with high regio-, diastereo- and enantioselectivity (up to 99% ee). Such level of stereocontrol could be achieved by a key remote double hydrogen atom bonding interaction between the linear substrate and the catalyst. Although the hetero-Diels–Alder reaction is a staple of organic chemistry, catalytic asymmetric versions of the inverse-electron demand variant often require specially engineered substrates for the reaction to work. Here the authors cyclize non-activated alkenes with α,β-unsaturated ketones or aldehydes to form chiral fused heterocycles using a chiral phosphoric acid catalyst.
Collapse
Affiliation(s)
- Min Jin
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 650201, Kunming, PR China
| | - Congyun Tang
- School of Food and Chemical Engineering, Shaoyang University, 422000, Shaoyang, PR China
| | - Yingying Li
- School of Chemical Engineering, Sichuan University of Science & Engineering, 643000, Zigong, PR China
| | - Shuai Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 650201, Kunming, PR China
| | - Ying-Tao Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 650201, Kunming, PR China
| | - Lin Peng
- School of Food and Chemical Engineering, Shaoyang University, 422000, Shaoyang, PR China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 650201, Kunming, PR China
| | - Wenjing Zhang
- College of Chemistry and Molecular Engineering, Zhengzhou University, 450001, Zhengzhou, Henan Province, PR China.
| | - Zhili Zuo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 650201, Kunming, PR China.
| | - Fabien Gagosz
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5, Ottawa, Canada
| | - Liang-Liang Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 650201, Kunming, PR China.
| |
Collapse
|
22
|
Barløse CL, Østergaard NL, Bitsch RS, Iversen MV, Jørgensen KA. A Direct Organocatalytic Enantioselective Route to Functionalized
trans
‐Diels–Alder Products Having the Norcarane Scaffold. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106598] [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)
- Casper L. Barløse
- Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Niklas L. Østergaard
- Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - René S. Bitsch
- Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Marc V. Iversen
- Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Karl Anker Jørgensen
- Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
| |
Collapse
|
23
|
Barløse CL, Østergaard NL, Bitsch RS, Iversen MV, Jørgensen KA. A Direct Organocatalytic Enantioselective Route to Functionalized trans-Diels-Alder Products Having the Norcarane Scaffold. Angew Chem Int Ed Engl 2021; 60:18318-18327. [PMID: 34080269 DOI: 10.1002/anie.202106598] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/02/2021] [Indexed: 11/07/2022]
Abstract
An enantioselective methodology to construct trans-Diels-Alder scaffolds by organocatalysis with excellent selectivity, high yield and up to five contiguous stereocenters is presented. The reaction concept integrates the halogen effect and a novel discovered pseudo-halogen effect to direct an endo-selective, secondary-amine catalyzed Diels-Alder reaction allowing for the subsequent formation of trans-Diels-Alder cycloadducts featuring the norcarene scaffold. The methodology relies on the reaction between an in situ generated trienamine and an α-brominated or α-pseudo-halogenated enone to form a fleeting cis-Diels-Alder intermediate. The endo-transition state-enhanced by the (pseudo-)halogen effect-sets the stereochemistry that allows for a subsequent SN 2-like reaction at a tertiary center to obtain the trans-Diels-Alder scaffold. The mechanism was investigated and supported by experimental results as well as computational studies.
Collapse
Affiliation(s)
- Casper L Barløse
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark
| | - Niklas L Østergaard
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark
| | - René S Bitsch
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark
| | - Marc V Iversen
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark
| | - Karl Anker Jørgensen
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark
| |
Collapse
|
24
|
Xue S, Lücht A, Benet-Buchholz J, Kleij AW. Pd/Cu Dual-Catalyzed Asymmetric Synthesis of Highly Functional All-Carbon Quaternary Stereocenters from Vinyl Carbonates. Chemistry 2021; 27:10107-10114. [PMID: 33955608 DOI: 10.1002/chem.202100677] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Indexed: 11/05/2022]
Abstract
The challenging metal-catalyzed asymmetric synthesis of highly functional quaternary carbon centers using decarboxylative C(sp3 )-C(sp3 ) bond formation reactions is reported. The key substrate, a vinyl cyclic carbonate, is activated to provide concomitantly both the requisite nucleophile (by formal umpolung) and electrophile reaction partner preceding the asymmetric cross-coupling process. A wide screening of reaction conditions, additives and catalyst precursors afforded a protocol that gave access to a series of compounds featuring densely functionalized, elusive quaternary carbon stereocenters in appreciable yield and with enantiomeric ratios (er's) of up to 90 : 10.
Collapse
Affiliation(s)
- Sijing Xue
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 -, Tarragona, Spain
| | - Alexander Lücht
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 -, Tarragona, Spain
| | - Jordi Benet-Buchholz
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 -, Tarragona, Spain
| | - Arjan W Kleij
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 -, Tarragona, Spain.,Catalan Institute of Research and Advanced Studies (ICREA), Pg. Lluís Companys 23, 08010, Barcelona, Spain
| |
Collapse
|
25
|
Alachouzos G, Frontier AJ. Cyclization Strategies for the Concurrent Installation of Multiple Quaternary Stereogenic Centers. Isr J Chem 2021. [DOI: 10.1002/ijch.202100014] [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)
- Georgios Alachouzos
- Stratingh Institute of Chemistry Rijksuniversiteit Groningen Nijenborgh 4 9747AG Groningen, The Netherlands
| | - Alison J. Frontier
- Department of Chemistry University of Rochester 414 Hutchison Hall, 100 Trustee Road Rochester New York 14627-0216 United States
| |
Collapse
|
26
|
Jiang X, Pan B, Qian X, Liang H, Zhang Y, Chen B, He X, Chan HS, Chan ASC, Qiu L. Enantioselective Construction of Pyrimidine‐Fused Diazepinone Derivatives Bearing a Tertiary Stereogenic Center Enabled by Iridium‐Catalysed Intramolecular Allylic Substitution. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Xiaoding Jiang
- School of Chemistry, Guangdong Key Lab of Chiral Molecules and Drug Discovery Sun Yat-Sen University Guangzhou 510275 People's Republic of China
| | - Bendu Pan
- School of Chemistry, Guangdong Key Lab of Chiral Molecules and Drug Discovery Sun Yat-Sen University Guangzhou 510275 People's Republic of China
| | - Xu Qian
- School of Chemistry, Guangdong Key Lab of Chiral Molecules and Drug Discovery Sun Yat-Sen University Guangzhou 510275 People's Republic of China
| | - Hao Liang
- School of Chemistry, Guangdong Key Lab of Chiral Molecules and Drug Discovery Sun Yat-Sen University Guangzhou 510275 People's Republic of China
| | - Yaqi Zhang
- School of Chemistry, Guangdong Key Lab of Chiral Molecules and Drug Discovery Sun Yat-Sen University Guangzhou 510275 People's Republic of China
| | - Bin Chen
- School of Chemistry, Guangdong Key Lab of Chiral Molecules and Drug Discovery Sun Yat-Sen University Guangzhou 510275 People's Republic of China
| | - Xiaobo He
- School of Chemistry, Guangdong Key Lab of Chiral Molecules and Drug Discovery Sun Yat-Sen University Guangzhou 510275 People's Republic of China
| | - Hoi Shan Chan
- Department of Chemistry The Chinese University of Hong Kong Hong Kong People's Republic of China
| | - Albert S. C. Chan
- School of Chemistry, Guangdong Key Lab of Chiral Molecules and Drug Discovery Sun Yat-Sen University Guangzhou 510275 People's Republic of China
| | - Liqin Qiu
- School of Chemistry, Guangdong Key Lab of Chiral Molecules and Drug Discovery Sun Yat-Sen University Guangzhou 510275 People's Republic of China
| |
Collapse
|
27
|
Wong HNC, Peng XS, Zhong Z, Lyu MY, Ma HR. Pivotal Reactions in the Creation of the Polycyclic Skeleton of Cryptotrione. Synlett 2021. [DOI: 10.1055/a-1472-4594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
AbstractThree pivotal reactions, namely, enyne cycloisomerization, polyene cyclization, and quinone methide formation, are applied to synthesize the complex polycyclic skeleton of cryptotrione. This review summarizes the most prominent applications of these three reactions to the total syntheses of natural products, covering results published in the literature between 2011 and 2020.1 Introduction2 Three Pivotal Reactions Applied to Create the Polycyclic Framework of Cryptotrione2.1 Enyne Cycloisomerization2.2 Polyene Cyclization2.3 Quinone Methide Formation3 Conclusion
Collapse
Affiliation(s)
- Henry N. C. Wong
- School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen)
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong
| | - Xiao-Shui Peng
- School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen)
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong
| | - Zhuliang Zhong
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong
| | - Mao-Yun Lyu
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong
| | - Hao-Ran Ma
- School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen)
| |
Collapse
|
28
|
Li C, Ragab SS, Liu G, Tang W. Enantioselective formation of quaternary carbon stereocenters in natural product synthesis: a recent update. Nat Prod Rep 2021; 37:276-292. [PMID: 31515549 DOI: 10.1039/c9np00039a] [Citation(s) in RCA: 107] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Covering: 2013-2018 Natural products bearing quaternary carbon stereocenters have attracted tremendous interest from the synthetic community due to their diverse biological activities and fascinating molecular architectures. However, the construction of these molecules in an enantioselective fashion remains a long-standing challenge because of the lack of efficient asymmetric catalytic methods for installing these motifs. The rapid progress in the development of new-generation efficient chiral catalysts has opened the door for several asymmetric reactions, such as Michael addition, dearomative cyclization, polyene cyclization, α-arylation, cycloaddition, allylation, for the construction of quaternary carbon stereocenters in a highly enantioselective fashion. These asymmetric catalytic methods have greatly facilitated the synthesis of complex natural products with improved output and overall efficiency. In this concise review, we highlight the progress in the last six years in complex natural product synthesis, in which at least one quaternary carbon stereocenter has been constructed via asymmetric catalytic technologies, with particular emphasis on the analysis of the stereochemical model of each enantioselective transformation.
Collapse
Affiliation(s)
- Chengxi Li
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China.
| | - Sherif Shaban Ragab
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China. and Photochemistry Department, Chemical Industries Research Division, National Research Centre, Dokki, 12622, Giza, Egypt
| | - Guodu Liu
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China. and Department of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China.
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China.
| |
Collapse
|
29
|
Vrubliauskas D, Gross BM, Vanderwal CD. Stereocontrolled Radical Bicyclizations of Oxygenated Precursors Enable Short Syntheses of Oxidized Abietane Diterpenoids. J Am Chem Soc 2021; 143:2944-2952. [PMID: 33555176 DOI: 10.1021/jacs.0c13300] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The power of cation-initiated cyclizations of polyenes for the synthesis of polycyclic terpenoids cannot be overstated. However, a major limitation is the intolerance of many relevant reaction conditions toward the inclusion in the substrate of polar functionality, particularly in unprotected form. Radical polycyclizations are important alternatives to bioinspired cationic variants, in part owing to the range of possible initiation strategies, and in part for the functional group tolerance of radical reactions. In this article, we demonstrate that Co-catalyzed MHAT-initiated radical bicyclizations are not only tolerant of oxidation at virtually every position in the substrate, oftentimes in unprotected form, but these functional groups can also contribute to high levels of stereochemical control in these complexity-generating transformations. Specifically, we show the effects of protected or unprotected hydroxy groups at six different positions and their impact on stereoselectivity. Further, we show how multiply oxidized substrates perform in these reactions, and finally, we document the utility of these reactions in the synthesis of three aromatic abietane diterpenoids.
Collapse
Affiliation(s)
- Darius Vrubliauskas
- 1102 Natural Sciences II, Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Benjamin M Gross
- 1102 Natural Sciences II, Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Christopher D Vanderwal
- 1102 Natural Sciences II, Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| |
Collapse
|
30
|
Yang WL, Ni T, Deng WP. Iridium-Catalyzed Diastereo- and Enantioselective [4 + 3] Cycloaddition of 4-Indolyl Allylic Alcohols with Azomethine Ylides. Org Lett 2021; 23:588-594. [PMID: 33404250 DOI: 10.1021/acs.orglett.0c04132] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An unprecedented iridium-catalyzed asymmetric [4 + 3] cycloaddition of racemic 4-indolyl allylic alcohols with azomethine ylides is reported. The ability of acid promoter zinc triflate to perform multiple roles is the key factor for the success of this strategy. This method provides scalable and efficient access to biologically important azepino[3,4,5-cd] indoles in good yields with generally excellent diastereo- and enantioselectivities (up to >20:1 dr and >99% ee). Mild reaction conditions, easily accessible substrates and chiral catalyst, and broad substrate scope highlight the practicality of this methodology.
Collapse
Affiliation(s)
- Wu-Lin Yang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Tao Ni
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Wei-Ping Deng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| |
Collapse
|
31
|
Li S, Qiu J, Li B, Sun Z, Xie P, Loh TP. Practical allylation with unactivated allylic alcohols under mild conditions. Org Chem Front 2021. [DOI: 10.1039/d1qo00490e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A practical palladium/calcium catalytic system was developed for dehydrative allylation with unactivated allylic alcohols.
Collapse
Affiliation(s)
- Shuangshuang Li
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Ju Qiu
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Bowen Li
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Zuolian Sun
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Peizhong Xie
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Teck-Peng Loh
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
- Division of Chemistry and Biological Chemistry
| |
Collapse
|
32
|
Pan B, Ouyang JS, Zhang Y, Liang H, Ni Q, Chen B, Pu X, Jiang L, Cao R, Qiu L. Iridium-catalyzed intramolecular asymmetric allylic etherification of salicylic acid derivatives with chiral-bridged biphenyl phosphoramidite ligands. Org Chem Front 2021. [DOI: 10.1039/d1qo00566a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Iridium-catalyzed intramolecular asymmetric allylic etherification of salicylic acid derivatives was successfully realized for the first time.
Collapse
|
33
|
Mies T, White AJP, Parsons PJ, Barrett AGM. Biomimetic Syntheses of Analogs of Hongoquercin A and B by Late-Stage Derivatization. J Org Chem 2020; 86:1802-1817. [DOI: 10.1021/acs.joc.0c02638] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Thomas Mies
- Department of Chemistry, Imperial College, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, England
| | - Andrew J. P. White
- Department of Chemistry, Imperial College, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, England
| | - Philip J. Parsons
- Department of Chemistry, Imperial College, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, England
| | - Anthony G. M. Barrett
- Department of Chemistry, Imperial College, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, England
| |
Collapse
|
34
|
Rossi‐Ashton JA, Clarke AK, Donald JR, Zheng C, Taylor RJK, Unsworth WP, You S. Iridium-Catalyzed Enantioselective Intermolecular Indole C2-Allylation. Angew Chem Int Ed Engl 2020; 59:7598-7604. [PMID: 32091146 PMCID: PMC7217203 DOI: 10.1002/anie.202001956] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Indexed: 12/22/2022]
Abstract
The enantioselective intermolecular C2-allylation of 3-substituted indoles is reported for the first time. This directing group-free approach relies on a chiral Ir-(P, olefin) complex and Mg(ClO4 )2 Lewis acid catalyst system to promote allylic substitution, providing the C2-allylated products in typically high yields (40-99 %) and enantioselectivities (83-99 % ee) with excellent regiocontrol. Experimental studies and DFT calculations suggest that the reaction proceeds via direct C2-allylation, rather than C3-allylation followed by in situ migration. Steric congestion at the indole-C3 position and improved π-π stacking interactions have been identified as major contributors to the C2-selectivity.
Collapse
Affiliation(s)
| | | | | | - Chao Zheng
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences345 Lingling LuShanghai200032China
| | | | | | - Shu‐Li You
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences345 Lingling LuShanghai200032China
| |
Collapse
|
35
|
Vrubliauskas D, Vanderwal CD. Cobalt-Catalyzed Hydrogen-Atom Transfer Induces Bicyclizations that Tolerate Electron-Rich and Electron-Deficient Intermediate Alkenes. Angew Chem Int Ed Engl 2020; 59:6115-6121. [PMID: 31991035 PMCID: PMC7124983 DOI: 10.1002/anie.202000252] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Indexed: 12/12/2022]
Abstract
A novel CoII -catalyzed polyene cyclization was developed that is uniquely effective when performed in hexafluoroisopropanol as the solvent. The process is presumably initiated by metal-catalyzed hydrogen-atom transfer (MHAT) to 1,1-disubstituted or monosubstituted alkenes, and the reaction is remarkable for its tolerance of internal alkenes bearing either electron-rich methyl or electron-deficient nitrile substituents. Electron-rich aromatic terminators are required in both cases. Terpenoid scaffolds with different substitution patterns are obtained with excellent diastereoselectivities, and the bioactive C20-oxidized abietane diterpenoid carnosaldehyde was made to showcase the utility of the nitrile-bearing products. Also provided are the results of several mechanistic experiments that suggest the process features an MHAT-induced radical bicyclization with late-stage oxidation to regenerate the aromatic terminator.
Collapse
Affiliation(s)
- Darius Vrubliauskas
- Department of Chemistry, University of California, Irvine, CA, 92697-2025, USA
| | | |
Collapse
|
36
|
Rossi‐Ashton JA, Clarke AK, Donald JR, Zheng C, Taylor RJK, Unsworth WP, You S. Iridium‐Catalyzed Enantioselective Intermolecular Indole C2‐Allylation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001956] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | | | | | - Chao Zheng
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | | | | | - Shu‐Li You
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| |
Collapse
|
37
|
Vrubliauskas D, Vanderwal CD. Cobalt‐Catalyzed Hydrogen‐Atom Transfer Induces Bicyclizations that Tolerate Electron‐Rich and Electron‐Deficient Intermediate Alkenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000252] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
38
|
Plamondon SJ, Warnica JM, Kaldre D, Gleason JL. Hydrazide‐Catalyzed Polyene Cyclization: Asymmetric Organocatalytic Synthesis of
cis
‐Decalins. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911952] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Samuel J. Plamondon
- Department of Chemistry McGill University 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
| | - Josephine M. Warnica
- Department of Chemistry McGill University 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
| | - Dainis Kaldre
- Department of Chemistry McGill University 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
| | - James L. Gleason
- Department of Chemistry McGill University 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
| |
Collapse
|
39
|
Plamondon SJ, Warnica JM, Kaldre D, Gleason JL. Hydrazide‐Catalyzed Polyene Cyclization: Asymmetric Organocatalytic Synthesis of
cis
‐Decalins. Angew Chem Int Ed Engl 2019; 59:253-258. [DOI: 10.1002/anie.201911952] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 10/23/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Samuel J. Plamondon
- Department of Chemistry McGill University 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
| | - Josephine M. Warnica
- Department of Chemistry McGill University 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
| | - Dainis Kaldre
- Department of Chemistry McGill University 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
| | - James L. Gleason
- Department of Chemistry McGill University 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
| |
Collapse
|
40
|
Rössler SL, Petrone DA, Carreira EM. Iridium-Catalyzed Asymmetric Synthesis of Functionally Rich Molecules Enabled by (Phosphoramidite,Olefin) Ligands. Acc Chem Res 2019; 52:2657-2672. [PMID: 31243973 DOI: 10.1021/acs.accounts.9b00209] [Citation(s) in RCA: 207] [Impact Index Per Article: 41.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The catalytic, asymmetric synthesis of complex molecules has been a core focus of our research program for some time because developments in the area can have an immediate impact on the identification of novel strategies for the synthesis of value-added molecules. In concert with this central interest, we have emphasized the design of ligand scaffolds as a tactic to discover and develop novel chemistry and overcome well-recognized synthetic challenges. Based on our group's work on chiral pool-derived diolefin ligands, we designed and implemented a class of hybrid (phosphoramidite,olefin) ligands, which combines the properties of both phosphoramidite and olefin motifs to impact, fine-tune, and even override the inherent reactivity of the metal center. Specifically, we have utilized these unique modifying ligands to address several recognized limitations in the field of iridium-catalyzed, asymmetric allylic substitution. The methods we have documented typically employ branched, unprotected allylic alcohols as substrates and obviate the need for rigorous exclusion of air and moisture. Following Takeuchi's seminal report demonstrating the high aptitude of Ir(I)-phosphite catalysts for branch-selective allylic substitution, concerted efforts from numerous research laboratories have led to a broadening of the synthetic utility of this reaction class. The first section of this Account outlines the process leading to our discovery of an unprecedented (phosphoramidite,olefin) ligand and its validation in the first iridium-catalyzed amination of branched, unprotected allylic alcohols. This section continues with our work involving heteroatom-based nucleophiles within inter- and intramolecular etherification, thioetherification and spiroketalization processes. The second section highlights the use of readily available carbon nucleophiles possessing sp, sp2, and sp3 hybridization in a series of enantioselective carbon-carbon bond-forming reactions. We describe how alkylzinc, allylsilane, and several classes of organotrifluoroborate nucleophiles can be coupled enantioselectively to enable construction of several key motifs including 1,5-dienes, 1,4-dienes, and 1,4-enynes. Since the unique electronic and steric properties of this class of ligands renders the (η3-allyl)-Ir(III) intermediate highly electrophilic, even weak nucleophiles such as alkyl olefins can be used. We also show that more nucleophilic alkene motifs such as enamines and in situ generated ketene acetals smoothly participate in substitution reactions with allylic alcohols to yield valuable piperidines and γ,δ-unsaturated esters, respectively. The concept of stereodivergent dual catalysis, which synergistically combines chiral amine catalysis with iridium catalysis to furnish α-allylated aldehydes containing two independently controllable stereocenters is then discussed. This process has enabled the independent, stereoselective synthesis of all four possible product stereoisomers from a single set of starting materials, and was highlighted in the stereodivergent synthesis of Δ9-tetrahydrocannabinol. This Account concludes with an overview of our organometallic mechanistic studies regarding relevant intermediates within the catalytic cycle of this class of allylic substitution. These studies have allowed us to better understand the origin of the unique characteristics exhibited by this catalyst in comparison to related systems.
Collapse
|
41
|
Tang S, Li Z, Shao Y, Sun J. Ir-Catalyzed Regiocontrolled Allylic Amination of Di-/Trienyl Allylic Alcohols with Secondary Amines. Org Lett 2019; 21:7228-7232. [PMID: 31508973 DOI: 10.1021/acs.orglett.9b02435] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An unprecedented regio-controllable allylic amination of unactivated dienyl and trienyl allylic alcohols has been developed, providing an efficient approach toward the site-selective formation of C1-, C3-, and C5-/C7-amination products from the sole substrates. Key to this protocol is the use of secondary amines as the amination reagents, as well as the presence of an iridium catalyst and scandium triflate.
Collapse
Affiliation(s)
- Shengbiao Tang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering , Changzhou University , 1 Gehu Road , 213164 , Changzhou , China
| | - Ziyong Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering , Changzhou University , 1 Gehu Road , 213164 , Changzhou , China
| | - Ying Shao
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering , Changzhou University , 1 Gehu Road , 213164 , Changzhou , China
| | - Jiangtao Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering , Changzhou University , 1 Gehu Road , 213164 , Changzhou , China
| |
Collapse
|
42
|
Xu G, Yang G, Wang Y, Shao PL, Yau JNN, Liu B, Zhao Y, Sun Y, Xie X, Wang S, Zhang Y, Xia L, Zhao Y. Stereoconvergent, Redox-Neutral Access to Tetrahydroquinoxalines through Relay Epoxide Opening/Amination of Alcohols. Angew Chem Int Ed Engl 2019; 58:14082-14088. [PMID: 31270918 DOI: 10.1002/anie.201906199] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 06/27/2019] [Indexed: 12/19/2022]
Abstract
We present an economical catalytic procedure to convert readily available 1,2-diaminobenzenes and terminal epoxides into valuable 1,2,3,4-tetrahydroquinoxalines in a highly enantioselective fashion. This procedure operates through relay zinc and iridium catalysis, and achieves redox-neutral and stereoconvergent production of valuable chiral heterocycles from racemic starting materials with water as the only side product. The use of commercially available reagents and catalysts and a convenient procedure also make this catalytic method attractive for practical application.
Collapse
Affiliation(s)
- Guangda Xu
- College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Guoqiang Yang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Yue Wang
- College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Pan-Lin Shao
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Jia Ning Nicolette Yau
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Bing Liu
- College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Yunbo Zhao
- College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Ye Sun
- College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Xinxin Xie
- College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Shuo Wang
- College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Yao Zhang
- College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Lixin Xia
- College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Yu Zhao
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| |
Collapse
|
43
|
Xu G, Yang G, Wang Y, Shao P, Yau JNN, Liu B, Zhao Y, Sun Y, Xie X, Wang S, Zhang Y, Xia L, Zhao Y. Stereoconvergent, Redox‐Neutral Access to Tetrahydroquinoxalines through Relay Epoxide Opening/Amination of Alcohols. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906199] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Guangda Xu
- College of Chemistry Liaoning University Shenyang 110036 P. R. China
| | - Guoqiang Yang
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Yue Wang
- College of Chemistry Liaoning University Shenyang 110036 P. R. China
| | - Pan‐Lin Shao
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Jia Ning Nicolette Yau
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Bing Liu
- College of Chemistry Liaoning University Shenyang 110036 P. R. China
| | - Yunbo Zhao
- College of Chemistry Liaoning University Shenyang 110036 P. R. China
| | - Ye Sun
- College of Chemistry Liaoning University Shenyang 110036 P. R. China
| | - Xinxin Xie
- College of Chemistry Liaoning University Shenyang 110036 P. R. China
| | - Shuo Wang
- College of Chemistry Liaoning University Shenyang 110036 P. R. China
| | - Yao Zhang
- College of Chemistry Liaoning University Shenyang 110036 P. R. China
| | - Lixin Xia
- College of Chemistry Liaoning University Shenyang 110036 P. R. China
| | - Yu Zhao
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| |
Collapse
|
44
|
Tang SB, Tu HF, Zhang X, You SL. Rhodium-Catalyzed Asymmetric Allylic Dearomatization of β-Naphthols: Enantioselective Control of Prochiral Nucleophiles. Org Lett 2019; 21:6130-6134. [DOI: 10.1021/acs.orglett.9b02285] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Sheng-Biao Tang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy
of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Hang-Fei Tu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy
of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Xiao Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy
of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy
of Sciences, 345 Lingling Lu, Shanghai 200032, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
| |
Collapse
|
45
|
Liu X, Zheng C, Yang Y, Jin S, You S. Iridium‐Catalyzed Asymmetric Allylic Aromatization Reaction. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904156] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xi‐Jia Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Yi‐Han Yang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shicheng Jin
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072 China
| |
Collapse
|
46
|
Liu X, Zheng C, Yang Y, Jin S, You S. Iridium‐Catalyzed Asymmetric Allylic Aromatization Reaction. Angew Chem Int Ed Engl 2019; 58:10493-10499. [DOI: 10.1002/anie.201904156] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 04/30/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Xi‐Jia Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Yi‐Han Yang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shicheng Jin
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072 China
| |
Collapse
|
47
|
Yang H, Tang W. Efficient Enantioselective Syntheses of Chiral Natural Products Facilitated by Ligand Design. CHEM REC 2019; 20:23-40. [PMID: 31025478 DOI: 10.1002/tcr.201900003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 03/27/2019] [Indexed: 12/23/2022]
Abstract
The employment of enantioselective transition-metal-catalyzed transformations as key steps in asymmetric natural product syntheses have attracted considerable attention in recent years owing to their versatile synthetic utilities, mild conditions and high efficiency in chirality generation. The chiral catalysts or supporting ligands are believed to be crucial for the requisite reactivity and enantioselectivity. Therefore, the rational design of chiral ligands is at the heart of developing new asymmetric transition-metal catalyzed reactions and provides an avenue to the asymmetric synthesis of natural products. Our group has been engaged in the development of transition-metal-catalyzed enantioselective cross-coupling, cyclization and other related reactions and the application of these methodologies to natural product syntheses. In this account, we summarized our recent synthetic efforts towards the efficient total syntheses of several different types of natural products including terpenes, alkaloids and polyketides facilitated by the design of a series of versatile P-chiral phosphorous ligands.
Collapse
Affiliation(s)
- He Yang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai, 200032
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai, 200032
| |
Collapse
|
48
|
Heuermann I, Heitmann B, Stichauer R, Duvinage D, Vogt M. Rh(I) Complex with a Tridentate Pyridine–Amino–Olefin Actor Ligand–Metal–Ligand Cooperative Activation of CO2 and Phenylisocyanate under C–C and Rh–E (E = O, N) Bond Formation. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00094] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Isabell Heuermann
- FB 2 Biologie/Chemie, Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Str. 7, NW2 C2060, 28359 Bremen, Germany
| | - Benjamin Heitmann
- FB 2 Biologie/Chemie, Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Str. 7, NW2 C2060, 28359 Bremen, Germany
| | - Rasmus Stichauer
- FB 2 Biologie/Chemie, Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Str. 7, NW2 C2060, 28359 Bremen, Germany
| | - Daniel Duvinage
- FB 2 Biologie/Chemie, Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Str. 7, NW2 C2060, 28359 Bremen, Germany
| | - Matthias Vogt
- FB 2 Biologie/Chemie, Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Str. 7, NW2 C2060, 28359 Bremen, Germany
| |
Collapse
|
49
|
Yue BB, Deng Y, Zheng Y, Wei K, Yang YR. Iridium-Catalyzed Enantioselective Allylation of Aryl Enamides and Enecarbamates. Org Lett 2019; 21:2449-2452. [PMID: 30896182 DOI: 10.1021/acs.orglett.9b00764] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Aromatic enamide and enecarbamate as a novel type of nucleophile in the asymmetric allylation of branched, racemic allylic alcohols to give homoallylic ketones has been described. Enabled by Carreira's chiral Ir (P, olefin) complex, the reactions proceed in good yields with excellent enantioselectivities.
Collapse
Affiliation(s)
- Bei-Bei Yue
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany , Chinese Academy of Sciences , Kunming 650201 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Yi Deng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany , Chinese Academy of Sciences , Kunming 650201 , China
| | - Yu Zheng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany , Chinese Academy of Sciences , Kunming 650201 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Kun Wei
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany , Chinese Academy of Sciences , Kunming 650201 , China
| | - Yu-Rong Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany , Chinese Academy of Sciences , Kunming 650201 , China
| |
Collapse
|
50
|
Bock J, Daniliuc CG, Hennecke U. Stable Bromiranium Ion Salts as Reagents for Biomimetic Indole Terpenoid Cyclizations. Org Lett 2019; 21:1704-1707. [DOI: 10.1021/acs.orglett.9b00259] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jonathan Bock
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Correnssstrasse 40, 48149 Münster, Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Correnssstrasse 40, 48149 Münster, Germany
| | - Ulrich Hennecke
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Correnssstrasse 40, 48149 Münster, Germany
- Organic Chemistry Research Group, Departments of Chemistry and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Elsene, Belgium
| |
Collapse
|