1
|
Xing S, Wang Y, Jin C, Shi S, Zhang Y, Liao Z, Wang K, Zhu B. Construction of Bridged Aza- and Oxa-[ n.2.1] Skeletons via an Intramolecular Formal [3+2] Cycloaddition of Aziridines and Epoxides with Electron-Deficient Alkenes. J Org Chem 2022; 87:6426-6431. [PMID: 35439001 DOI: 10.1021/acs.joc.2c00287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An intramolecular formal [3+2] cycloaddition of activated aziridines and epoxides with electron-deficient alkene has been developed for the general and efficient construction of bridged aza- and oxa-[n.2.1] (n = 3 or 4) skeletons. This strategy can be efficiently promoted by lithium iodide. To demonstrate its potential, the intramolecular formal [3+2] cycloaddition was used to access the important intermediate of homoepiboxidine.
Collapse
Affiliation(s)
- Siyang Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Yuhan Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Changkun Jin
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Shaochen Shi
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Yihui Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Ziya Liao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Kui Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| |
Collapse
|
2
|
Ghosh AK, Yadav M. Highly Diastereoselective Intramolecular Asymmetric Oxidopyrylium-olefin [5 + 2] Cycloaddition and Synthesis of 8-Oxabicyclo[3.2.1]oct-3-enone Containing Ring Systems. J Org Chem 2021; 86:8127-8142. [PMID: 34015224 DOI: 10.1021/acs.joc.1c00600] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have the investigated base mediated asymmetric intramolecular oxidopyrylium-alkene [5 + 2]-cycloaddition reaction which resulted in the synthesis of functionalized tricyclic ring systems containing an 8-oxabicyclo[3.2.1]octane core. Intramolecular cycloaddition constructed two new rings, three new stereogenic centers, and provided a tricyclic cycloadduct with high diastereoselectivity and isolated yield. We incorporated an α-chiral center and an alkoxy alkene tether on the substrates and examined the effect of the size of alkyl groups and alkene tether length on diastereoselectivity. The requisite substrates for the oxidopyrylium-alkene cycloaddition reaction were synthesized in a few steps involving alkylation of optically active α-hydroxy amide, furyllithium addition, reduction of resulting ketone, and Achmatowicz reaction followed by acylation of a lactol intermediate. We have proposed stereochemical models for the [5 + 2] cycloaddition reaction via the oxidopyrylium ylide. Interestingly, the alkoxy substituent on the stereocenter and the chain length are responsible for the degree of stereoselectivity of the cycloadduct.
Collapse
Affiliation(s)
- Arun K Ghosh
- Department of Chemistry and Department of Medicinal Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Monika Yadav
- Department of Chemistry and Department of Medicinal Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| |
Collapse
|
3
|
Schiavone DV, Kapkayeva DM, Murelli RP. Investigations into a Stoichiometrically Equivalent Intermolecular Oxidopyrylium [5 + 2] Cycloaddition Reaction Leveraging 3-Hydroxy-4-pyrone-Based Oxidopyrylium Dimers. J Org Chem 2021; 86:3826-3835. [PMID: 33586990 PMCID: PMC8061303 DOI: 10.1021/acs.joc.0c02655] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Oxidopyrylium [5 + 2] cycloaddition reactions are powerful strategies for constructing complex bicyclic architectures. However, intermolecular cycloadditions of oxidopyrylium ylides are limited due to competing dimerization processes; consequently, high equivalents of dipolarophiles are often used to help intercept the ylide prior to dimerization. Recent studies by our lab have revealed that oxidopyrylium dimers derived from 3-hydroxy-4-pyrones are capable of reverting back to ylides in situ and as a result can be used as clean oxidopyrylium ylide sources. The following manuscript investigates intermolecular cycloaddition reactions between 3-hydroxy-4-pyrone-derived oxidopyrylium dimers and stoichiometrically equivalent ratios of alkyne dipolarophiles under thermal conditions. With certain reactive alkynes, pure cycloadducts can be obtained following a simple evaporation of the solvent, which is a benefit of the completely atom-economical reaction conditions. However, when less reactive alkynes are used the yields suffer due to a competing dimer rearrangement. Finally, when reactive-yet-volatile alkynes are used, such as methyl propiolate, competing 2:1 ylide/alkyne cycloadducts are observed. Intriguingly, these complex cycloadducts, which can be obtained in good yields from the pure cycloadducts, form with high regio- and stereoselectivities; however, both the regio-and stereoselectivities differ remarkably based on the source of the oxidopyrylium ylide.
Collapse
Affiliation(s)
- Daniel V. Schiavone
- Department of Chemistry, Brooklyn College, The City University of New York, Brooklyn, NY, USA
- PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, NY, USA
| | - Diana M. Kapkayeva
- Department of Chemistry, Brooklyn College, The City University of New York, Brooklyn, NY, USA
| | - Ryan P. Murelli
- Department of Chemistry, Brooklyn College, The City University of New York, Brooklyn, NY, USA
- PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, NY, USA
- PhD Program in Biochemistry, The Graduate Center of the City University of New York, New York, NY, USA
| |
Collapse
|
4
|
Synthesis of Polycyclic Ether-Benzopyrans and In Vitro Inhibitory Activity against Leishmania tarentolae. Molecules 2020; 25:molecules25225461. [PMID: 33233418 PMCID: PMC7700287 DOI: 10.3390/molecules25225461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/14/2020] [Accepted: 11/18/2020] [Indexed: 11/21/2022] Open
Abstract
Construction of a focused library of polycyclic ether-benzopyrans was undertaken in order to discover new therapeutic compounds that affect Leishmania growth and infectivity. This is especially of interest since there are few drug therapies for leishmaniasis that do not have serious drawbacks such high cost, side effects, and emerging drug resistance. The construction of these polycyclic ether-benzopyrans utilized an acetoxypyranone-alkene [5+2] cycloaddition and the Suzuki-Miyaura cross-coupling. The multi-gram quantity of the requisite aryl bromide was obtained followed by effective Pd-catalyzed coupling with boronic acid derivatives. Compounds were tested in vitro using the parasitic protozoan, Leishmania tarentolae. Effects of concentration, time, and exposure to light were evaluated. In addition, the effects on secreted acid phosphatase activity and nitric oxide production were investigated, since both have been implicated in parasite infectivity. The data presented herein are indicative of disruption of the Leishmania tarentolae and thus provide impetus for the development and testing of a more extensive library.
Collapse
|
5
|
Rokey SN, Simanis JA, Law CM, Pohani S, Willens Behrends S, Bulandr JJ, Ferrence GM, Goodell JR, Andrew Mitchell T. Intramolecular asymmetric oxidopyrylium-based [5 + 2] cycloadditions. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
6
|
Grabowski JP, Ferrence GM, Mitchell TA. Efforts toward the total synthesis of (±)-toxicodenane A utilizing an oxidopyrylium-based [5+2] cycloaddition of a silicon-tethered BOC-pyranone. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152324] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
7
|
Bejcek LP, Murelli RP. Synthesis of aryl-substituted 2-methoxyphenol derivatives from maltol-derived oxidopyrylium cycloadducts through an acid-mediated ring contraction cascade. Chem Commun (Camb) 2020; 56:3203-3205. [PMID: 32068199 PMCID: PMC7560963 DOI: 10.1039/c9cc09213g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxidopyrylium cycloadducts derived from maltol and aryl acetylenes undergo acid-mediated rearrangements to generate aryl-substituted 2-methoxyphenol (guaiacol) derivatives. Specifically, the cycloadducts react with boron trichloride to form 2-methoxy-5-arylphenol molecules, and with methane sulfonate to form 2-methoxy-4-aryl-6-methylphenol molecules.
Collapse
Affiliation(s)
- Lauren P Bejcek
- Department of Chemistry, Brooklyn College, The City University of New York, Brooklyn, NY, USA.
| | | |
Collapse
|
8
|
Bejcek LP, Garimallaprabhakaran AK, Suyabatmaz DM, Greer A, Hersh WH, Greer EM, Murelli RP. Maltol- and Allomaltol-Derived Oxidopyrylium Ylides: Methyl Substitution Pattern Kinetically Influences [5 + 3] Dimerization versus [5 + 2] Cycloaddition Reactions. J Org Chem 2019; 84:14670-14678. [PMID: 31603325 PMCID: PMC6982524 DOI: 10.1021/acs.joc.9b02137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Oxidopyrylium ylides are useful intermediates in synthetic organic chemistry because of their capability of forming structurally complex cycloadducts. They can also self-dimerize via [5 + 3] cycloaddition, which is an oft-reported side reaction that can negatively impact [5 + 2] cycloadduct yields and efficiency. In select instances, these dimers can be synthesized and used as the source of oxidopyrylium ylide, although the generality of this process remains unclear. Thus, how the substitution pattern governs both dimerization and cycloaddition reactions is of fundamental interest to probe factors to regulate them. The following manuscript details our findings that maltol-derived oxidopyrylium ylides (i.e., with ortho methyl substitution relative to oxide) can be trapped prior to dimerization more efficiently than the regioisomeric allomaltol-derived ylide (i.e., with a para methyl substitution relative to oxide). Density functional theory studies provide evidence in support of a sterically (kinetically) controlled mechanism, whereby gauche interactions between appendages of the approaching maltol-derived ylides are privileged by higher barriers for dimerization and thus are readily intercepted by dipolarophiles via [5 + 2] cycloadditions.
Collapse
Affiliation(s)
- Lauren P Bejcek
- Department of Chemistry , Brooklyn College, The City University of New York , Brooklyn , New York 11210 , United States
- PhD Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10016 , United States
| | - Aswin K Garimallaprabhakaran
- Department of Chemistry , Brooklyn College, The City University of New York , Brooklyn , New York 11210 , United States
| | - Duygu M Suyabatmaz
- Department of Chemistry , Brooklyn College, The City University of New York , Brooklyn , New York 11210 , United States
| | - Alexander Greer
- Department of Chemistry , Brooklyn College, The City University of New York , Brooklyn , New York 11210 , United States
- PhD Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10016 , United States
| | - William H Hersh
- PhD Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10016 , United States
- Department of Chemistry and Biochemistry , Queens College, City University of New York , Queens , New York 11367 , United States
| | - Edyta M Greer
- Department of Natural Sciences , Baruch College, City University of New York , New York , New York 10010 , United States
| | - Ryan P Murelli
- Department of Chemistry , Brooklyn College, The City University of New York , Brooklyn , New York 11210 , United States
- PhD Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10016 , United States
| |
Collapse
|
9
|
Bulandr JJ, Grabowski JP, Law CM, Shaw JL, Goodell JR, Mitchell TA. Investigation of Transfer Group, Tether Proximity, and Alkene Substitution for Intramolecular Silyloxypyrone-Based [5 + 2] Cycloadditions. J Org Chem 2019; 84:10306-10320. [PMID: 31322900 DOI: 10.1021/acs.joc.9b01479] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Systematic investigation of intramolecular silyloxypyrone-based [5 + 2] cycloadditions revealed three significant factors impacting conversion to cycloadduct: (1) the silyl transfer group has a substantial influence on the rate of reaction, and the robust t-butyldiphenylsilyl group was found to be more effective overall than the conventional t-butyldimethylsilyl group; (2) α,β-unsaturated esters were generally more reactive than terminal olefins and afforded appreciable quantity of cycloadduct even at room temperature; and (3) the proximity of the tether to the silyl transfer group revealed a critical alignment trend between the pyrone and the alkene. Taken together, these investigations provided insight regarding the steric and electronic parameters that impact the scope and limitation of these reactions.
Collapse
Affiliation(s)
- Jacob J Bulandr
- Department of Chemistry , Illinois State University , Campus Box 4160, Normal , Illinois 61790-4160 , United States
| | - Jacob P Grabowski
- Department of Chemistry , Illinois State University , Campus Box 4160, Normal , Illinois 61790-4160 , United States
| | - Chunyin M Law
- Department of Chemistry , Illinois State University , Campus Box 4160, Normal , Illinois 61790-4160 , United States
| | - Jessica L Shaw
- Department of Chemistry , Illinois State University , Campus Box 4160, Normal , Illinois 61790-4160 , United States
| | - John R Goodell
- Department of Chemistry , Illinois State University , Campus Box 4160, Normal , Illinois 61790-4160 , United States
| | - T Andrew Mitchell
- Department of Chemistry , Illinois State University , Campus Box 4160, Normal , Illinois 61790-4160 , United States
| |
Collapse
|
10
|
Burns JM, Boittier ED. Pathway Bifurcation in the (4 + 3)/(5 + 2)-Cycloaddition of Butadiene and Oxidopyrylium Ylides: The Significance of Molecular Orbital Isosymmetry. J Org Chem 2019; 84:5997-6005. [DOI: 10.1021/acs.joc.8b03236] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Jed M. Burns
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, 4067 Queensland, Australia
| | - Eric D. Boittier
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, 4067 Queensland, Australia
| |
Collapse
|
11
|
Zhao C, Glazier DA, Yang D, Yin D, Guzei IIA, Aristov MM, Liu P, Tang W. Intermolecular Regio‐ and Stereoselective Hetero‐[5+2] Cycloaddition of Oxidopyrylium Ylides and Cyclic Imines. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201811896] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Changgui Zhao
- School of Pharmacy University of Wisconsin-Madison Madison WI 53705 USA
| | - Daniel A. Glazier
- Department of Chemistry University of Wisconsin-Madison Madison WI 53706 USA
| | - Daoshan Yang
- School of Pharmacy University of Wisconsin-Madison Madison WI 53705 USA
- State Key Laboratory Base of Eco-Chemical Engineering College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 China
| | - Dan Yin
- Department of Chemistry University of Wisconsin-Madison Madison WI 53706 USA
| | - IIia A. Guzei
- Department of Chemistry University of Wisconsin-Madison Madison WI 53706 USA
| | - Michael M. Aristov
- Department of Chemistry University of Wisconsin-Madison Madison WI 53706 USA
| | - Peng Liu
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
| | - Weiping Tang
- School of Pharmacy University of Wisconsin-Madison Madison WI 53705 USA
- Department of Chemistry University of Wisconsin-Madison Madison WI 53706 USA
| |
Collapse
|
12
|
Gao K, Zhang YG, Wang Z, Ding H. Recent development on the [5+2] cycloadditions and their application in natural product synthesis. Chem Commun (Camb) 2019; 55:1859-1878. [DOI: 10.1039/c8cc09077g] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The recent developments on the [5+2] cycloadditions and their application in the synthesis of complex natural products are discussed.
Collapse
Affiliation(s)
- Kai Gao
- Institute of Medicinal Natural Products
- School of Advanced Study
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Yong-Gang Zhang
- Institute of Medicinal Natural Products
- School of Advanced Study
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Zhiming Wang
- Institute of Medicinal Natural Products
- School of Advanced Study
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Hanfeng Ding
- Institute of Medicinal Natural Products
- School of Advanced Study
- Taizhou University
- Taizhou 318000
- P. R. China
| |
Collapse
|
13
|
Zhao C, Glazier DA, Yang D, Yin D, Guzei IIA, Aristov MM, Liu P, Tang W. Intermolecular Regio‐ and Stereoselective Hetero‐[5+2] Cycloaddition of Oxidopyrylium Ylides and Cyclic Imines. Angew Chem Int Ed Engl 2018; 58:887-891. [DOI: 10.1002/anie.201811896] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 11/19/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Changgui Zhao
- School of Pharmacy University of Wisconsin-Madison Madison WI 53705 USA
| | - Daniel A. Glazier
- Department of Chemistry University of Wisconsin-Madison Madison WI 53706 USA
| | - Daoshan Yang
- School of Pharmacy University of Wisconsin-Madison Madison WI 53705 USA
- State Key Laboratory Base of Eco-Chemical Engineering College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 China
| | - Dan Yin
- Department of Chemistry University of Wisconsin-Madison Madison WI 53706 USA
| | - IIia A. Guzei
- Department of Chemistry University of Wisconsin-Madison Madison WI 53706 USA
| | - Michael M. Aristov
- Department of Chemistry University of Wisconsin-Madison Madison WI 53706 USA
| | - Peng Liu
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
| | - Weiping Tang
- School of Pharmacy University of Wisconsin-Madison Madison WI 53705 USA
- Department of Chemistry University of Wisconsin-Madison Madison WI 53706 USA
| |
Collapse
|