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Kvyatkovskaya EA, Epifanova PP, Nikitina EV, Senin AA, Khrustalev VN, Polyanskii KB, Zubkov FI. Synthesis and ethylene-promoted metathesis of adducts of tandem [4+2]/[4+2] cycloaddition between bis-furyl dienes and maleic acid derivatives. NEW J CHEM 2021. [DOI: 10.1039/d0nj04528d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A series of 1,4:5,8-diepoxynaphthalenes, annellated with carbo- and heterocycles, was synthesized based on the tandem intermolecular/intramolecular [4+2] cycloaddition of bis-furyl dienes with moderately to highly reactive cyclic dienophiles (maleic anhydride and maleinimides).
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Affiliation(s)
- Elizaveta A. Kvyatkovskaya
- Organic Chemistry Department
- Faculty of Science
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow 117198
- Russian Federation
| | - Polina P. Epifanova
- Organic Chemistry Department
- Faculty of Science
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow 117198
- Russian Federation
| | - Eugeniya V. Nikitina
- Organic Chemistry Department
- Faculty of Science
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow 117198
- Russian Federation
| | - Aleksey A. Senin
- Organic Chemistry Department
- Faculty of Science
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow 117198
- Russian Federation
| | - Victor N. Khrustalev
- Organic Chemistry Department
- Faculty of Science
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow 117198
- Russian Federation
| | - Kirill B. Polyanskii
- Organic Chemistry Department
- Faculty of Science
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow 117198
- Russian Federation
| | - Fedor I. Zubkov
- Organic Chemistry Department
- Faculty of Science
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow 117198
- Russian Federation
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2
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Hu YJ, Fan JH, Li S, Zhao J, Li CC. Synthetic Study toward the Total Synthesis of Taxezopidines A and B. Org Lett 2018; 20:5905-5909. [PMID: 30192554 DOI: 10.1021/acs.orglett.8b02571] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A concise synthetic approach to construct the [6,8,6]-tricyclic core of taxezopidines A and B, which contains a synthetically challenging bridged bicyclo[5.3.1]undecane ring system bearing most of the desired functionalized groups and stereocenters, has been established. This approach features a diastereoselective type II intramolecular Diels-Alder furan reaction. The stereochemistry of the acetoxy group at the allylic position of the dienophile alkene group, such as in 6a, was found to be critical for achieving the desired highly diastereoselective outcome.
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Affiliation(s)
- Ya-Jian Hu
- Institute of Chinese Medical Sciences , University of Macau , Macau 999078 , China.,Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , Shenzhen 518055 , China
| | - Jian-Hong Fan
- Institute of Chinese Medical Sciences , University of Macau , Macau 999078 , China.,Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , Shenzhen 518055 , China
| | - Shaoping Li
- Institute of Chinese Medical Sciences , University of Macau , Macau 999078 , China
| | - Jing Zhao
- Institute of Chinese Medical Sciences , University of Macau , Macau 999078 , China
| | - Chuang-Chuang Li
- Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , Shenzhen 518055 , China
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4
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Gulbrandsen HS, Alfaro JLD, Read ML, Gundersen L. Synthesis of Electron‐Deficient Tetrahydro‐ and Dihydroimidazo[1,2‐
f
]phenanthridines by Microwave‐Mediated IMDAF Reactions. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700180] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - Matthew Lovell Read
- Department of Chemistry University of Oslo P. O. Box 1033, Blindern 0315 Oslo Norway
| | - Lise‐Lotte Gundersen
- Department of Chemistry University of Oslo P. O. Box 1033, Blindern 0315 Oslo Norway
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5
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Mackay EG, Nörret M, Wong LSM, Louis I, Lawrence AL, Willis AC, Sherburn MS. A Domino Diels–Alder Approach toward the Tetracyclic Nicandrenone Framework. Org Lett 2015; 17:5517-9. [DOI: 10.1021/acs.orglett.5b02412] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Emily G. Mackay
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Marck Nörret
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Leon S.-M. Wong
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Ignace Louis
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Andrew L. Lawrence
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Anthony C. Willis
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Michael S. Sherburn
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
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6
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Wang C, Kong L, Li Y, Li Y. Palladium-Catalyzed Allenylation/Intramolecular Diels-Alder Reaction of Furans with Propargyl Carboxylates for the Synthesis of Polycyclic Compounds. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402059] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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7
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Zou GF, Pan F, Liao WW. Lewis base catalyzed asymmetric substitution/Diels–Alder cascade reaction: a rapid and efficient construction of enantioenriched diverse tricyclic heterocycles. Org Biomol Chem 2013; 11:7080-3. [DOI: 10.1039/c3ob41454j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Kumar-Patti R, Duan S, Camacho-Davila A, Waynant K, Dunn KA, Herndon JW. Synthesis of hydronaphthalenes through coupling of enyne carbonyl compounds that contain pendant alkene groups with Fischer carbene complexes. Tetrahedron Lett 2010; 51:3682-3684. [PMID: 20548964 DOI: 10.1016/j.tetlet.2010.05.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The coupling of enyne carbonyl compounds that contain pendant alkene groups with Fischer carbene complexes to afford furans that contain pendant alkene groups is described. Subsequent intramolecular Diels-Alder reactions are effective in select cases, resulting in hydronaphthalene systems after dehydration. Although the Diels-Alder event is thermodynamically unfavorable, the overall transformation of alkene-furans to dihydronaphthalenes is a favorable process.
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Affiliation(s)
- Rajesh Kumar-Patti
- Department of Chemistry & Biochemistry, New Mexico State University, Las Cruces, NM, 88003, USA
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9
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Gao S, Wang Q, Huang LJS, Lum L, Chen C. Chemical and biological studies of nakiterpiosin and nakiterpiosinone. J Am Chem Soc 2010; 132:371-83. [PMID: 20000429 DOI: 10.1021/ja908626k] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Nakiterpiosin and nakiterpiosinone are two related C-nor-D-homosteroids isolated from the sponge Terpios hoshinota that show promise as anticancer agents. We have previously described the asymmetric synthesis and revision of the relative configuration of nakiterpiosin. We now provide detailed information on the stereochemical analysis that supports our structure revision and the synthesis of the originally proposed and revised nakiterpiosin. In addition, we herein describe a refined approach for the synthesis of nakiterpiosin, the first synthesis of nakiterpiosinone, and preliminary mechanistic studies of nakiterpiosin's action in mammalian cells. Cells treated with nakiterpiosin exhibit compromised formation of the primary cilium, an organelle that functions as an assembly point for components of the Hedgehog signal transduction pathway. We provide evidence that the biological effects exhibited by nakiterpiosin are mechanistically distinct from those of well-established antimitotic agents such as taxol. Nakiterpiosin may be useful as an anticancer agent in those tumors resistant to existing antimitotic agents and those dependent on Hedgehog pathway responses for growth.
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Affiliation(s)
- Shuanhu Gao
- Department of Biochemistry, The University of Texas Southwestern Medical Center at Dallas, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9038, USA
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10
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Dadwal M, Kesharwani MK, Danayak V, Ganguly B, Mobin SM, Muruganantham R, Namboothiri INN. Synthetic and Theoretical Investigations on the Construction of Oxanorbornenes by a Michael Addition and Intramolecular Diels-Alder Furan Reaction. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800681] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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11
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Kimura M, Horino Y, Mori M, Tamaru Y. Chameleon Reactivity of the Allene Bond of 4-Vinylidene-2-oxazolidinone: Novel Through-Space Conjugative Nucleophilic Addition of Electron-Rich Alkenes and Hetero-Nucleophiles. Chemistry 2007; 13:9686-702. [PMID: 17768719 DOI: 10.1002/chem.200700691] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The Calpha==Cbeta double bond of allene carbamates 1 serves as an electron acceptor similar to the double bond of conjugated enones by means of a through-space interaction with the N--SO2 bond; the carbamate double bond is thus subject to nucleophilic addition for a wide variety of nucleophiles, which proceeds under mild conditions by heating at 70-100 degrees C. Depending on the kind of nucleophiles, 1 displays three different reaction modes: 1) Typically enol ethers and allylsilanes promote 1,3-sulfonyl migration of 1 and undergo the inverse electron demand Diels-Alder reaction with the 1-aza-1,3-butadiene intermediates II thus formed to furnish bicyclic 2-alkoxy-5-sulfonyltetrahydropyridines 2 and 2-silylmethyl-5-sulfonyltetrahydropyridines 3, respectively, with high regio- and stereoselectivity and retention of configuration of the double bonds of these electron-rich alkenes; 2) silanes (RnSiH4-n, n=1-3) and thiols deliver the hydride and the thiolate at the Cbeta carbon and promote the 1,3-sulfonyl migration, followed by protonation of the thus-formed carbamate anion (Z)-III to provide, for example, (Z)-4 a and (Z)-4 j, respectively; 3) alcohols simply add to the Calpha==Cbeta double bond and provide (E)-6. Usually, the reaction with alcohols is accompanied by the second pathway, giving rise to, for example, (Z)-4 b in addition to (E)-6 b. Phenol engages in the third pathway and provides (E)-6 g exclusively. Heteroaromatics, such as furans and benzofurans follow the first pathway, however, in a different regioselectivity from enol ethers and allylsilanes, delivering the oxygen atom at the 3-position of 5-sulfonyltetrahydropyridines (2 g and 2 h). Indoles, on the other hand, show a dichotomy, equally enjoying the first and the third pathways and provide mixtures of (E)-7 and (E)-8, respectively.
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Affiliation(s)
- Masanari Kimura
- Graduate School of Science and Technology, Department of Applied Chemistry, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
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12
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Padwa A, Wang Q. Rhodium(I)-catalyzed nucleophilic ring-opening reactions of oxabicyclo adducts derived from the [4 + 2]-cycloaddition of 2-imido-substituted furans. J Org Chem 2007; 71:3210-20. [PMID: 16599620 PMCID: PMC2495029 DOI: 10.1021/jo060238r] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of 2-imido-substituted furans containing tethered unsaturation were prepared by the addition of the lithium carbamate of furan-2-ylcarbamic acid tert-butyl ester to a solution of the mixed anhydride of an appropriately substituted 3-butenoic acid. The initially formed imido furans undergo a rapid intramolecular [4 + 2]-cycloaddition at room temperature to deliver the Diels-Alder cycloadducts in good to excellent yield. Isolation of the highly labile oxabicyclic adduct is believed to be a consequence of the lower reaction temperatures employed as well as the presence of the extra carbonyl group, which diminishes the basicity of the nitrogen atom, thereby retarding the ring cleavage/rearrangement reaction generally encountered with related systems. By using a Rh(I)-catalyzed ring opening of the oxabicyclic adduct with various nucleophilic reagents, it was possible to prepare highly functionalized hexahydro-1H-indol-2(3H)-one derivatives in good yield. The major stereoisomer obtained possesses a cis-relationship between the nucleophile and hydroxyl group in the ring-opened product. The stereochemistry was unequivocally established by X-ray crystallographic analysis. Coordination of Rh(I) to the alkenyl pi-bond followed by a nitrogen-assisted cleavage of the carbon-oxygen bond occurs to furnish a pi-allyl rhodium(III) species. Addition of the nucleophile then occurs from the least hindered terminus of the resulting pi-allyl rhodium(III) complex. Proton exchange followed by rhodium(I) decomplexation ultimately leads to the cis-diastereomer.
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Pedrosa R, Sayalero S, Vicente M, Casado B. Chiral Template Mediated Diastereoselective Intramolecular Diels−Alder Reaction Using Furan as a Diene. Toward the Synthesis of Enantiopure Trisubstituted Tetrahydroepoxyisoindolones. J Org Chem 2005; 70:7273-8. [PMID: 16122248 DOI: 10.1021/jo0509509] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] Chiral precursors to the intramolecular Diels-Alder reaction using furan as a diene (IMDAF) have been prepared by diastereoselective addition of furyllithium to imines attached to perhydro-1,3-benzoxazines derived from (-)-8-aminomenthol. The acylation of the furylamines with alpha,beta-unsaturated acyl chlorides and subsequent IMDAF reaction under thermal conditions provided the corresponding cycloadducts as single diastereoisomers. The hydrolytic elimination of the chiral template yielded enantiopure perhydroepoxyisoindolones with up to five stereocenters.
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Affiliation(s)
- Rafael Pedrosa
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Dr. Mergelina s/n, 47011-Valladolid, Spain.
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Namboothiri INN, Ganesh M, Mobin SM, Cojocaru M. A Stereoselective and Atom-Efficient Approach to Multifunctionalized Five- and Six-Membered Rings via a Novel Michael-Initiated Intramolecular Diels−Alder Furan Reaction. J Org Chem 2005; 70:2235-43. [PMID: 15760210 DOI: 10.1021/jo048262x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] A variety of key precursors to the intramolecular Diels-Alder reaction of furan diene (IMDAF) have been prepared via a very facile 1,4-addition of O-, S-, N-, and C-centered nucleophiles possessing unsaturated tether to beta-furyl nitroethylene. Subsequent IMDAF reaction of the 1,4-adducts, carried out under thermal conditions, provided five- and six-membered carbocycles and heterocycles fused to an easily cleavable oxabicycloheptene moiety. The structure and stereochemistry of the cycloadducts were determined by 2D-NMR experiments and further confirmed by X-ray crystallography. The salient features of the strategy include high degree of stereoselectivity (>80:20) in the cycloaddition, atom and step economy, and generation of multiple chiral centers and functionalities. The feasibility of the cleavage of the oxa bridge in the cycloadducts to afford novel multifunctional molecules has also been demonstrated.
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Affiliation(s)
- Irishi N N Namboothiri
- Department of Chemistry and National Single-Crystal X-ray Diffraction Facility, Indian Institute of Technology, Bombay, Mumbai 400 076, India.
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