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Gharpure SJ, Patel RK. Unlocking a reductive hydroalkoxylation cascade for the stereoselective synthesis of cyclic ethers: total synthesis of (±)-isolaurepan and (±)- cis-lauthisan. Chem Commun (Camb) 2024. [PMID: 39380310 DOI: 10.1039/d4cc04461d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2024]
Abstract
A Lewis acid-mediated, 5/6/7/8-endo-dig reductive hydroalkoxylation cascade on enynols gives expeditious, diastereoselective access to small and medium ring cyclic ethers with a long aliphatic side chain. The brevity of the approach allowed a 4-step, stereoselective total synthesis of (±)-isolaurepan and (±)-cis-lauthisan.
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Affiliation(s)
- Santosh J Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Raj Kumar Patel
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
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2
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Gharpure SJ, Vishwakarma DS, Hajam SA. Lewis-Acid-Catalyzed Reductive Hydroalkoxylation of Propargylic N-Hydroxylamines Gives Stereoselective Access to Isoxazolidines. Org Lett 2023; 25:2525-2530. [PMID: 37015053 DOI: 10.1021/acs.orglett.3c00690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2023]
Abstract
Lewis-acid-catalyzed 5-endo-dig reductive hydroalkoxylation cascade on propargylic N-hydroxylamine gave expedient, stereoselective access to isoxazolidine derivatives. The developed method provides a new approach toward the synthesis of isoxazolidine, a biologically privileged scaffold. The synthetic potential of the developed methodology was demonstrated by synthesizing 1,3-aminoalcohol, 4-aminotetrahydropyran, and sedamine natural products.
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Affiliation(s)
- Santosh J Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | | | - Showkat A Hajam
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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3
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Fernandes AJ, Michelet B, Panossian A, Martin-Mingot A, Leroux FR, Thibaudeau S. Exploring F/CF 3 substituted oxocarbenium ions for the diastereoselective assembly of highly substituted tetrahydrofurans. Chem Commun (Camb) 2023; 59:4083-4086. [PMID: 36938713 DOI: 10.1039/d2cc06521e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Abstract
Understanding the influence of emerging fluorinated motifs is of a crucial importance in the context of the exponentially growing exploitation of fluorine in many fields. Herein, we report on the dramatic effect of a local partial charge inversion by replacing a CHCH3 group by a CFCF3. This strategy allows the diastereoselective reduction of 5-membered ring oxocarbenium ions to access highly substituted tetrahydrofurans.
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Affiliation(s)
- Anthony J Fernandes
- Université de Strasbourg, Université de Haute-Alsace, CNRS, UMR 7042-LIMA, ECPM, 25 Rue Becquerel, Strasbourg 67087, France.
| | - Bastien Michelet
- Université de Poitiers, CNRS, IC2MP, UMR 7285, Equipe "Synthèse Organique", 4 Rue Michel Brunet, Poitiers Cedex 9 86073, France.
| | - Armen Panossian
- Université de Strasbourg, Université de Haute-Alsace, CNRS, UMR 7042-LIMA, ECPM, 25 Rue Becquerel, Strasbourg 67087, France.
| | - Agnès Martin-Mingot
- Université de Poitiers, CNRS, IC2MP, UMR 7285, Equipe "Synthèse Organique", 4 Rue Michel Brunet, Poitiers Cedex 9 86073, France.
| | - Frédéric R Leroux
- Université de Strasbourg, Université de Haute-Alsace, CNRS, UMR 7042-LIMA, ECPM, 25 Rue Becquerel, Strasbourg 67087, France.
| | - Sébastien Thibaudeau
- Université de Poitiers, CNRS, IC2MP, UMR 7285, Equipe "Synthèse Organique", 4 Rue Michel Brunet, Poitiers Cedex 9 86073, France.
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4
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Hilby KM, Denmark SE. Lewis Base Catalyzed, Sulfenium Ion Initiated Enantioselective, Spiroketalization Cascade. J Org Chem 2021; 86:14250-14289. [PMID: 34672623 DOI: 10.1021/acs.joc.1c02271] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A Lewis base catalyzed, enantioselective sulfenocyclization of alkenes to afford [6,6]spiroketals has been developed. The method uses a chiral Lewis base catalyst with an electrophilic sulfur source to generate enantioenriched thiiranium ion with alkenes. Upon formation, the thiiranium ion is subsequently captured in a cascade-type reaction, wherein a ketone oxygen serves as the nucleophile to open the thiiranium ion and an alcohol provides the secondary cyclization to form biorelevant spiroketals. A variety of electron-rich and electron-neutral E-substituted styrenes form the desired spiroketals in good yields with excellent enantio- and diastereoselectivities. Alkyl-substituted and terminal alkenes participate in the cascade reaction, but with a limited scope compared to the styrenyl substrates. This method allows for rapid formation of highly substituted spiroketals in good yield and excellent enantioselectivity.
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Affiliation(s)
- Kimberly M Hilby
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Scott E Denmark
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
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5
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Omar CA, Fernando SP. Nucleophilic substitution at the anomeric position of furanose carbohydrates. The case of the C-allylations. Carbohydr Res 2021; 510:108441. [PMID: 34700220 DOI: 10.1016/j.carres.2021.108441] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/31/2021] [Accepted: 09/07/2021] [Indexed: 11/28/2022]
Abstract
Taking advantage of the locked conformation of cyclic furanose form, carbohydrate derivatives have been transformed into relevant tetrahydrofuran moieties through a chemical operation commonly known as C-glycosylation reaction. Consequently, a large number of total synthesis of naturally occurring products containing this heterocycle have been accomplished by applying this reaction. In this regard, the C-allylation reaction of furanose carbohydrates provides flexible routes for stereoselective anomeric functionalization by incorporating an allyl group, which is eventually re-functionalized into advanced natural product intermediates. Therefore, this mini review deals with the description of the origin of the stereoselectivity and synthetic applications of this type of glycosylation reaction, which can be also called as: "Nucleophilic Substitution at the Anomeric Position", conducted by various research groups including our own group.
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Affiliation(s)
- Cortezano-Arellano Omar
- Instituto de Ciencias Básicas, Universidad Veracruzana, Luis Castelazo Ayala, Col. Industrial Ánimas, 91190, Xalapa, Ver., Mexico
| | - Sartillo-Piscil Fernando
- Centro de Investigación de la Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla (BUAP), 14 Sur Esq. San Claudio, Col. San Manuel, 72570, Puebla, Mexico.
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6
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Ratthachag T, Buntasana S, Vilaivan T, Padungros P. Surfactant-mediated thioglycosylation of 1-hydroxy sugars in water. Org Biomol Chem 2021; 19:822-836. [PMID: 33403378 DOI: 10.1039/d0ob02246b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thioglycosides are an important class of sugars, since they can be used as non-ionic biosurfactants, biomimetic glycosides, and building blocks for carbohydrate synthesis. Previously, Brønsted- or Lewis-acid-catalyzed dehydrative glycosylations between a 1-hydroxy sugar and a thiol have been reported to yield open-chain dithioacetal sugars as the major products instead of the desired thioglycosides. These dithioacetal sugars are by-products derived from the endocyclic bond cleavage of the thioglycosides. Herein, we report dehydrative glycosylation in water mediated by a Brønsted acid-surfactant combined catalyst (BASC). Glycosylations between 1-hydroxy furanosyl/pyranosyl sugars and primary, secondary, and tertiary aliphatic/aromatic thiols in the presence of dodecyl benzenesulfonic acid (DBSA) provided the thioglycoside products in moderate to good yields. Microwave irradiation led to improvements in the yields and a shortening of the reaction time. Remarkably, open-chain dithioacetal sugars were not detected in the DBSA-mediated glycosylations in water. This method is a simple, convenient, and rapid approach to produce a library of thioglycosides without the requirement of anhydrous conditions. Moreover, this work also provides an excellent example of complementary reactivity profiles of glycosylation in organic solvents and water.
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Affiliation(s)
- Trichada Ratthachag
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Supanat Buntasana
- Green Chemistry for Fine Chemical Productions STAR, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand.
| | - Tirayut Vilaivan
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Panuwat Padungros
- Green Chemistry for Fine Chemical Productions STAR, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand.
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7
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Konrádová D, Bon DJYD, Pospíšil J. 1-(Phenylsulfonyl)-3-oxabicyclo[3.1.0]hexan-2-one as a Building Block in Organic Synthesis. J Org Chem 2018; 83:12229-12238. [PMID: 30188126 DOI: 10.1021/acs.joc.8b01625] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The transformation of the readily available phenylsulfonyl lactone building block to structurally diverse molecular scaffolds is described. Depicted structures are accessed in one to three steps, and their overall yields are high. The rigidity of the starting building block greatly directs the stereoselectivity of the transformations, and newly generated stereogenic centers including the quaternary carbon centers are formed with high stereoselectivity generally superior to dr > 95:1.
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Affiliation(s)
- Daniela Konrádová
- Laboratory of Growth Regulators , Palacky University & Institute of Experimental Botany AS CR , Šlechtitelů 27 , CZ-783 71 Olomouc , Czech Republic
| | - David Jean-Yves Denis Bon
- Department of Organic Chemistry, Faculty of Science , Palacky University , tř. 17. listopadu 1192/12 , CZ-771 46 Olomouc , Czech republic
| | - Jiří Pospíšil
- Laboratory of Growth Regulators , Palacky University & Institute of Experimental Botany AS CR , Šlechtitelů 27 , CZ-783 71 Olomouc , Czech Republic.,Department of Organic Chemistry, Faculty of Science , Palacky University , tř. 17. listopadu 1192/12 , CZ-771 46 Olomouc , Czech republic
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8
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Hamza-Reguig S, Bentabed-Ababsa G, Domingo LR, Ríos-Gutiérrez M, Philippot S, Fontanay S, Duval RE, Ruchaud S, Bach S, Roisnel T, Mongin F. A combined experimental and theoretical study of the thermal [3+2] cycloaddition of carbonyl ylides with activated alkenes. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.12.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Sánchez-Eleuterio A, García-Santos WH, Díaz-Salazar H, Hernández-Rodríguez M, Cordero-Vargas A. Stereocontrolled Nucleophilic Addition to Five-Membered Oxocarbenium Ions Directed by the Protecting Groups. Application to the Total Synthesis of (+)-Varitriol and of Two Diastereoisomers Thereof. J Org Chem 2017; 82:8464-8475. [DOI: 10.1021/acs.joc.7b01211] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alma Sánchez-Eleuterio
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Coyoacán C.P. 04510, México City, México
| | - William H. García-Santos
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Coyoacán C.P. 04510, México City, México
| | - Howard Díaz-Salazar
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Coyoacán C.P. 04510, México City, México
| | - Marcos Hernández-Rodríguez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Coyoacán C.P. 04510, México City, México
| | - Alejandro Cordero-Vargas
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Coyoacán C.P. 04510, México City, México
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10
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Shibuya M, Fujita S, Abe M, Yamamoto Y. Brønsted Acid/Silane Catalytic System for Intramolecular Hydroalkoxylation and Hydroamination of Unactivated Alkynes. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00403] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masatoshi Shibuya
- Department of Basic Medicinal
Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8601, Japan
| | - Shoji Fujita
- Department of Basic Medicinal
Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8601, Japan
| | - Masanori Abe
- Department of Basic Medicinal
Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8601, Japan
| | - Yoshihiko Yamamoto
- Department of Basic Medicinal
Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8601, Japan
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11
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Hernández-Torres G, Mateo J, Colobert F, Urbano A, Carreño MC. Synthesis of Medium-Sized 2,ω-cis-Disubstituted Cyclic Ethers by Reductive Cyclization of Hydroxy Ketones. ChemistrySelect 2016. [DOI: 10.1002/slct.201601161] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gloria Hernández-Torres
- Departamento de Química Orgánica (Módulo 01), Fac. Ciencias; Universidad Autónoma de Madrid; c/ Francisco Tomás y Valiente 7, Cantoblanco 28049- Madrid Spain
| | - Julio Mateo
- Departamento de Química Orgánica (Módulo 01), Fac. Ciencias; Universidad Autónoma de Madrid; c/ Francisco Tomás y Valiente 7, Cantoblanco 28049- Madrid Spain
| | - FranÇoise Colobert
- Laboratoire de Synthèse et Catalyse Asymétrique; Université de Strasbourg (ECPM), UMR CNRS 7509; 25 rue Becquerel 67087 Strasbourg Cedex 02 France
| | - Antonio Urbano
- Departamento de Química Orgánica (Módulo 01), Fac. Ciencias; Universidad Autónoma de Madrid; c/ Francisco Tomás y Valiente 7, Cantoblanco 28049- Madrid Spain
| | - M. Carmen Carreño
- Departamento de Química Orgánica (Módulo 01), Fac. Ciencias; Universidad Autónoma de Madrid; c/ Francisco Tomás y Valiente 7, Cantoblanco 28049- Madrid Spain
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12
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13
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Sutivisedsak N, Dawadi S, Spilling CD. Trapping Hemiacetals with Phosphono Substituted Palladium π-Allyl Complexes for the Synthesis of Substituted Cyclic Ethers. Tetrahedron Lett 2015; 56:3534-3537. [PMID: 26236053 PMCID: PMC4518476 DOI: 10.1016/j.tetlet.2015.01.050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Oxidation of hydroxy substituted phosphono allylic carbonates gave the aldehyde substituted phosphonates in good yield. Stereospecific palladium (0)-catalyzed cyclization in the presence of methanol or water gave acetal tetrahydrofuran and tetrahydropyran vinyl phosphonate products derived from hemiacetal trapping. The tetrahydrofuran acetals undergo Lewis acid catalyzed addition of nucleophiles to give diastereoisomeric mixtures of substituted tetrahydrofurans.
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Affiliation(s)
- Nongnuch Sutivisedsak
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Boulevard, St. Louis, Missouri, 63121, USA
| | - Surendra Dawadi
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Boulevard, St. Louis, Missouri, 63121, USA
| | - Christopher D. Spilling
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Boulevard, St. Louis, Missouri, 63121, USA
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14
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van Rijssel ER, van Delft P, van Marle DV, Bijvoets SM, Lodder G, Overkleeft HS, van der Marel GA, Filippov DV, Codée JDC. Stereoselectivity in the Lewis Acid Mediated Reduction of Ketofuranoses. J Org Chem 2015; 80:4553-65. [DOI: 10.1021/acs.joc.5b00419] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Erwin R. van Rijssel
- Leiden Institute
of Chemistry, Leiden University, P.O.
Box 9502, 2300 RA Leiden, The Netherlands
| | - Pieter van Delft
- Leiden Institute
of Chemistry, Leiden University, P.O.
Box 9502, 2300 RA Leiden, The Netherlands
| | - Daan V. van Marle
- Leiden Institute
of Chemistry, Leiden University, P.O.
Box 9502, 2300 RA Leiden, The Netherlands
| | - Stefan M. Bijvoets
- Leiden Institute
of Chemistry, Leiden University, P.O.
Box 9502, 2300 RA Leiden, The Netherlands
| | - Gerrit Lodder
- Leiden Institute
of Chemistry, Leiden University, P.O.
Box 9502, 2300 RA Leiden, The Netherlands
| | - Herman S. Overkleeft
- Leiden Institute
of Chemistry, Leiden University, P.O.
Box 9502, 2300 RA Leiden, The Netherlands
| | | | - Dmitri V. Filippov
- Leiden Institute
of Chemistry, Leiden University, P.O.
Box 9502, 2300 RA Leiden, The Netherlands
| | - Jeroen D. C. Codée
- Leiden Institute
of Chemistry, Leiden University, P.O.
Box 9502, 2300 RA Leiden, The Netherlands
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15
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Pace V, Holzer W, Olofsson B. Increasing the Reactivity of Amides towards Organometallic Reagents: An Overview. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400630] [Citation(s) in RCA: 172] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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van Rijssel ER, van Delft P, Lodder G, Overkleeft HS, van der Marel GA, Filippov DV, Codée JDC. Furanosyl Oxocarbenium Ion Stability and Stereoselectivity. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405477] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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van Rijssel ER, van Delft P, Lodder G, Overkleeft HS, van der Marel GA, Filippov DV, Codée JDC. Furanosyl Oxocarbenium Ion Stability and Stereoselectivity. Angew Chem Int Ed Engl 2014; 53:10381-5. [DOI: 10.1002/anie.201405477] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 06/13/2014] [Indexed: 11/09/2022]
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18
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Cortezano-Arellano O, Meléndez-Becerra CA, Cortés F, Sartillo-Piscil F, Cordero-Vargas A. Stereoselective C-glycosidation of D-fucose derivatives directed by the protective groups. Carbohydr Res 2014; 393:51-9. [PMID: 24893263 DOI: 10.1016/j.carres.2014.04.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 03/31/2014] [Accepted: 04/04/2014] [Indexed: 10/25/2022]
Abstract
Stereoselectivity in the C-glycosidation of lactones derived from D-fucose by following Kishi's method, which involves the addition of a nucleophile onto a carbohydrate-derived lactone and subsequent reduction of the lactol, was found to be reliant on the nature of the C2 and C3 protective groups. Lactones bearing TBDMS protecting groups selectively afford 1,3-trans products (α anomer), in which the stereoselective outcome is in apparent concordance with Woerpel's model. On the other hand, their benzylated congeners produce the 1,3-cis products (β anomer) as the major diastereoisomers. The latter results suggest an abnormal behavior during the stereoselective nucleophilic substitution at the anomeric position of the benzylated lactones.
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Affiliation(s)
- Omar Cortezano-Arellano
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito exterior s/n, Ciudad Universitaria, 04510 México, D.F., Mexico
| | - Camilo A Meléndez-Becerra
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito exterior s/n, Ciudad Universitaria, 04510 México, D.F., Mexico
| | - Fernando Cortés
- Centro Conjunto de Investigación en Química Sustentable UAEMex-UNAM, carretera Toluca-Atlacomulco Km 14.5, Toluca 50200, Mexico
| | - Fernando Sartillo-Piscil
- Centro de Investigación de la Facultad de Ciencias Químicas, BUAP, 14 sur esq. San Claudio, San Manuel, 72570 Puebla, Mexico
| | - Alejandro Cordero-Vargas
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito exterior s/n, Ciudad Universitaria, 04510 México, D.F., Mexico.
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19
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Okada Y, Shimada K, Kitano Y, Chiba K. Short-Step Anodic Access to Emissive RNA Homonucleosides. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301604] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Tran VT, Woerpel KA. Nucleophilic addition to silyl-protected five-membered ring oxocarbenium ions governed by stereoelectronic effects. J Org Chem 2013; 78:6609-21. [PMID: 23738497 DOI: 10.1021/jo400945j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A series of fused-bicyclic acetals containing a disiloxane ring was investigated to evaluate the source of selectivity in silyl-protected 2-deoxyribose systems. The disiloxane ring unexpectedly enables the diaxial conformer of the cation to be stabilized by an electronegative atom at C-3. This low energy conformer subsequently undergoes stereoelectronically controlled nucleophilic addition to give substituted tetrahydrofurans with high diastereoselectivity.
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Affiliation(s)
- Vi Tuong Tran
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, USA
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21
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Yanagita Y, Nakamura H, Shirokane K, Kurosaki Y, Sato T, Chida N. Direct nucleophilic addition to N-alkoxyamides. Chemistry 2012; 19:678-84. [PMID: 23165728 DOI: 10.1002/chem.201202639] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 10/02/2012] [Indexed: 11/06/2022]
Abstract
While the synthesis of amide bonds is now one of the most reliable organic reactions, functionalization of amide carbonyl groups has been a long-standing issue due to their high stability. As an ongoing program aimed at practical transformation of amides, we developed a direct nucleophilic addition to N-alkoxyamides to access multisubstituted amines. The reaction enabled installation of two different functional groups to amide carbonyl groups in one pot. The N-alkoxy group played important roles in this reaction. First, it removed the requirement for an extra preactivation step prior to nucleophilic addition to activate inert amide carbonyl groups. Second, the N-alkoxy group formed a five-membered chelated complex after the first nucleophilic addition, resulting in suppression of an extra addition of the first nucleophile. While diisobutylaluminum hydride (DIBAL-H) and organolithium reagents were suitable as the first nucleophile, allylation, cyanation, and vinylation were possible in the second addition including inter- and intramolecular reactions. The yields were generally high, even in the synthesis of sterically hindered α-trisubstituted amines. The reaction exhibited wide substrate scope, including acyclic amides, five- and six-membered lactams, and macrolactams.
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Affiliation(s)
- Yuta Yanagita
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Yokohama 223-8522, Japan
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22
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Sánchez-Eleuterio A, Quintero L, Sartillo-Piscil F. High 1,3-trans Stereoselectivity in Nucleophilic Substitution at the Anomeric Position and β-Fragmentation of the Primary Alkoxyl Radical in 3-Amino-3-deoxy-ribofuranose Derivatives: Application to the Synthesis of 2-epi-(−)-Jaspine B. J Org Chem 2011; 76:5466-71. [DOI: 10.1021/jo200639t] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Alma Sánchez-Eleuterio
- Centro de Investigación de la Facultad de Ciencias Químicas, BUAP. 14 Sur Esq. San Claudio, San Manuel 72570, Puebla, México
| | - Leticia Quintero
- Centro de Investigación de la Facultad de Ciencias Químicas, BUAP. 14 Sur Esq. San Claudio, San Manuel 72570, Puebla, México
| | - Fernando Sartillo-Piscil
- Centro de Investigación de la Facultad de Ciencias Químicas, BUAP. 14 Sur Esq. San Claudio, San Manuel 72570, Puebla, México
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23
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Figueroa R, Feltenberger JB, Guevarra CC, Hsung RP. Two Remarkable Epimerizations Imperative for the Success of an Asymmetric Total Synthesis of (+)-Aigialospirol. Sci China Chem 2011; 54:31-42. [PMID: 21221423 PMCID: PMC3017383 DOI: 10.1007/s11426-010-4176-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Two remarkable epimerization processes were uncovered during our pursuit of an enantioselective synthesis of (+)-aigialospirol featuring a cyclic acetal tethered ring-closing metathesis. Through modeling, we were able to turn these two unexpected epimerizations to our advantage via modeling to ensure a successful and concise total synthesis, thereby firmly establishing cyclic acetal tethered RCM as a powerful strategy in natural product synthesis. Most importantly, calculations allowed us to fully understand the nature and the mechanistic course of these two epimerizations that were imperative to the total synthesis efforts.
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Affiliation(s)
- Ruth Figueroa
- Division of Pharmaceutical Sciences and Department of Chemistry, University of Wisconsin, Madison, WI 53705 USA
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24
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Prévost M, St-Jean O, Guindon Y. Synthesis of 1′,2′-cis-Nucleoside Analogues: Evidence of Stereoelectronic Control for SN2 Reactions at the Anomeric Center of Furanosides. J Am Chem Soc 2010; 132:12433-9. [DOI: 10.1021/ja104429y] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michel Prévost
- Institut de Recherches Cliniques de Montréal (IRCM), Bio-organic Chemistry Laboratory, 110 avenue des Pins Ouest, Montréal, Québec, Canada H2W 1R7, Department of Chemistry, Université de Montréal, C.P. 6128, succursale Centre-ville, Montréal, Québec, Canada H3C 3J7, and Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, Québec, Canada H3A 2K6
| | - Olivier St-Jean
- Institut de Recherches Cliniques de Montréal (IRCM), Bio-organic Chemistry Laboratory, 110 avenue des Pins Ouest, Montréal, Québec, Canada H2W 1R7, Department of Chemistry, Université de Montréal, C.P. 6128, succursale Centre-ville, Montréal, Québec, Canada H3C 3J7, and Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, Québec, Canada H3A 2K6
| | - Yvan Guindon
- Institut de Recherches Cliniques de Montréal (IRCM), Bio-organic Chemistry Laboratory, 110 avenue des Pins Ouest, Montréal, Québec, Canada H2W 1R7, Department of Chemistry, Université de Montréal, C.P. 6128, succursale Centre-ville, Montréal, Québec, Canada H3C 3J7, and Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, Québec, Canada H3A 2K6
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25
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P. Hsung R, Wang J, K. Ghosh S, Wei Y, B. Feltenberger J. A Cyclic Acetal Tethered Intramolecular Diels-Alder Cycloaddition. Studies Directed toward a Total Synthesis of (±)-Fusidilactone C. HETEROCYCLES 2010. [DOI: 10.3987/com-10-s(e)93] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Paz-Morales E, Melendres R, Sartillo-Piscil F. A short and practical synthesis of two Hagen's gland lactones. Carbohydr Res 2009; 344:1123-6. [PMID: 19362711 DOI: 10.1016/j.carres.2009.03.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2009] [Revised: 03/20/2009] [Accepted: 03/22/2009] [Indexed: 11/12/2022]
Abstract
A seven-step total synthesis of Hagen's gland lactones 1 and 2 starting from 1,2-O-isopropylidene-alpha-D-xylofuranose 3 is reported. The success of this short and practical synthesis depends on the use of two key reactions: a stereoselective nucleophilic substitution at the anomeric position of 5 and 6, which allowed the construction of the gamma-lactone ring, and an alkyl substitution reaction on tosylated compound 4, which permitted the carbon chain elongation of the tetrahydrofuran ring appendage at C-6.
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Affiliation(s)
- Evelyn Paz-Morales
- Centro de Investigación de la Facultad de Ciencias Químicas, BUAP. 14 Sur Esq. San Claudio, San Manuel, Puebla, Mexico
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27
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Kim H, Kasper AC, Moon EJ, Park Y, Wooten CM, Dewhirst MW, Hong J. Nucleophilic addition of organozinc reagents to 2-sulfonyl cyclic ethers: stereoselective synthesis of manassantins A and B. Org Lett 2009; 11:89-92. [PMID: 19111058 PMCID: PMC2656112 DOI: 10.1021/ol8024617] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A convergent route to the synthesis of manassantins A and B, potent inhibitors of HIF-1, is described. Central to the synthesis is a stereoselective addition of an organozinc reagent to a 2-benzenesulfonyl cyclic ether to achieve the 2,3-cis-3,4-trans-4,5-cis-tetrahydrofuran of the natural products. Preliminary structure-activity relationships suggested that the (R)-configuration at C-7 and C-7''' is not critical for HIF-1 inhibition. In addition, the hydroxyl group at C-7 and C-7''' can be replaced with a carbonyl group without loss of activity.
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Affiliation(s)
- Hyoungsu Kim
- Department of Chemistry, Duke University, Durham, North Carolina 27708, USA
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28
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Hernández-García L, Quintero L, Höpfl H, Sosa M, Sartillo-Piscil F. Inverse stereoselectivity in the nucleophilic attack on five-membered ring oxocarbenium ions. Application to the total synthesis of 7-epi-(+)-goniofufurone. Tetrahedron 2009. [DOI: 10.1016/j.tet.2008.10.087] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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29
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Lazzaroni S, Protti S, Fagnoni M, Albini A. Photoinduced Three-Component Reaction: A Convenient Access to 3-Arylacetals or 3-Arylketals. Org Lett 2008; 11:349-52. [DOI: 10.1021/ol802560t] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Simone Lazzaroni
- Department of Organic Chemistry, The University of Pavia, V. Taramelli 10, 27100 Pavia, Italy
| | - Stefano Protti
- Department of Organic Chemistry, The University of Pavia, V. Taramelli 10, 27100 Pavia, Italy
| | - Maurizio Fagnoni
- Department of Organic Chemistry, The University of Pavia, V. Taramelli 10, 27100 Pavia, Italy
| | - Angelo Albini
- Department of Organic Chemistry, The University of Pavia, V. Taramelli 10, 27100 Pavia, Italy
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30
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Ichikawa S, Hayashi R, Hirano S, Matsuda A. Highly β-Selective C-Allylation of a Ribofuranoside Controlling Steric Hindrance in the Transition State. Org Lett 2008; 10:5107-10. [DOI: 10.1021/ol8018743] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Satoshi Ichikawa
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Ryoko Hayashi
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Shinpei Hirano
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Akira Matsuda
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
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31
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A versatile approach to pyrrolidine azasugars and homoazasugars based on a highly diastereoselective reductive benzyloxymethylation of protected tartarimide. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.02.087] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Boukouvalas J, Pouliot M, Robichaud J, MacNeil S, Snieckus V. Asymmetric total synthesis of (-)-panacene and correction of its relative configuration. Org Lett 2007; 8:3597-9. [PMID: 16869669 DOI: 10.1021/ol061385e] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] The first synthesis of (-)-panacene has been accomplished in concise, highly stereoselective fashion from commercially available 2-methoxy-6-methylbenzoic acid (15 steps, 8.3% overall yield). The synthesis unambiguously establishes the correct relative and absolute configuration of panacene, and demonstrates the serviceability of Pd(II)-mediated tandem intramolecular alkoxycarbonylation-lactonization for the expedient assembly of its tricyclic core, and the dual role of asymmetric alkynylation as an initial source of chirality and as a powerful tool for manipulating diastereoselectivity.
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Affiliation(s)
- John Boukouvalas
- Département de Chimie, Université Laval, Quebec City, Quebec G1K 7P4, Canada.
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33
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Ko C, Hsung RP. An unusual stereoselectivity in the anomeric substitution with carbamates promoted by HNTf2. Org Biomol Chem 2007; 5:431-4. [PMID: 17252121 DOI: 10.1039/b615725d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unexpected stereoselective anomeric substitution with carbamates promoted by HNTf2 is described here. Our experiments suggest that the observed diastereoselectivity is a result of thermodynamic equilibration of protonated N-acyl aminals.
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Affiliation(s)
- Changhong Ko
- Division of Pharmaceutical Sciences and Department of Chemistry, Rennebohm Hall, 777 Highland Avenue University of Wisconsin, Madison, WI 53705-2222, USA
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34
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de Godoy LAF, Camilo NS, Pilli RA. Addition of carbon nucleophiles to cyclic N-acyliminium and oxocarbenium ions under solvent-free conditions. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.09.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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35
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Romero M, Hernández L, Quintero L, Sartillo-Piscil F. Nucleophilic substitution at the anomeric position of 1,2-O-isopropylidenefuranose derivatives. A novel stereoselective synthesis of cyclic phosphates analogous to cAMP. Carbohydr Res 2006; 341:2883-90. [PMID: 17087924 DOI: 10.1016/j.carres.2006.10.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2006] [Revised: 09/08/2006] [Accepted: 10/13/2006] [Indexed: 11/19/2022]
Abstract
1,2-O-Isopropylidenefuranose derivatives were treated with various nucleophiles in the presence of either BF(3).OEt(2) or trimethylsilyl trifluoromethanesulfonate (TMSOTf) leading to substitution products in a regio- and stereoselective manner. In particular, nucleophilic substitution of 1,2-O-isopropylidenefuranose derivatives when treated with allyltrimethylsilane was controlled by steric and electronic factors (similar to Woerpel's stereoelectronic model). On the other hand, when 1,2-O-isopropylidenefuranose derivatives were treated with trimethylsilane, in the presence of bis-O-trimethylsilyl-5-iodouracil or bis-O-trimethylsilyl-thymidine, substitution products were generated in high regio- and stereoselectivities via an unusual nucleophilic substitution with opening of the furanose ring. Based on these results, a stereoselective method for the synthesis of neutral cyclic phosphates analogous to cAMP was developed.
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Affiliation(s)
- Miriam Romero
- Centro de Investigación de la Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 Sur Esq. San Claudio, Col. San Manuel, 72570 Puebla, Mexico
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36
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Smith DM, Woerpel KA. Electrostatic interactions in cations and their importance in biology and chemistry. Org Biomol Chem 2006; 4:1195-201. [PMID: 16557303 DOI: 10.1039/b600056h] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrostatic effects exert strongly stabilizing influences on cations, in many cases controlling the conformational preferences of these cations. The lowest energy conformers are ones where the positive charge is brought closest to substituents bearing partial negative charges. These conformational biases, along with stereoelectronic effects, can control the stereoselectivity of reactions involving carbocationic intermediates.
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Affiliation(s)
- Deborah M Smith
- Department of Chemistry, University of California, Irvine, California 92697-2025, USA
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37
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A tandem C–H insertion—acetal cleavage sequence: stereocontrolled synthesis of substituted tetrahydrofurans. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.08.082] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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38
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Ghosh SK, Hsung RP, Liu J. An Anomeric Control on Remote Stereochemistry in the Synthesis of Spiroketals. J Am Chem Soc 2005; 127:8260-1. [PMID: 15941240 DOI: 10.1021/ja051745d] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Evidence for a remarkable anomeric control on the stereoselectivity of a remote center is described in this communication.
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Affiliation(s)
- Sunil K Ghosh
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
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39
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Berry CR, Hsung RP, Antoline JE, Petersen ME, Challeppan R, Nielson JA. Syntheses of 2,5-Disubstituted Dihydrofurans from γ-Substituted Chiral Allenamides. J Org Chem 2005; 70:4038-42. [PMID: 15876094 DOI: 10.1021/jo0503411] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] Details of a synthesis of dihydrofurans using gamma-substituted chiral allenamides are described here. Some transformations of these dihydrofurans are also examined including a highly stereoselective dihydroxylation and a rare account of a Lewis acid-mediated removal of an N-acyl substituent at the anomeric carbon of a tetrahydrofuran ring system. These studies provide further support for the synthetic utility of allenamides.
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Affiliation(s)
- Craig R Berry
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA
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40
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Five-membered ring systems: furans and benzofurans. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s0959-6380(05)80329-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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