1
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Biradar DO, Mane YD, Yadav JS, Subba Reddy BV. Prins cyclization: new strategy for the stereoselective total synthesis of Polyrhacitide A. Nat Prod Res 2023:1-11. [PMID: 38041627 DOI: 10.1080/14786419.2023.2288694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 11/22/2023] [Indexed: 12/03/2023]
Abstract
A highly stereoselective total synthesis of polyrhacitide A, a polyketide natural product, has been accomplished by means of Prins cyclisation. The key precursor i.e. anti-1,3-diol for polyrhacitide A has been prepared from trans-2,6-disubstituted-3,4-dihydropyrans. In this approach, Prins cyclisation has successfully been utilised twice for the construction of 1,3-diol unit of polyrhacitide A. The key steps involved in this approach are Jacobsen hydrolytic kinetic resolution, Mitsunobu inversion, Prins cyclisation and Ring-closing metathesis (RCM).
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Affiliation(s)
- Dhanraj O Biradar
- Chemistry, Indian Institute of Chemical Technology, Hyderabad, India
- Maharashtra Mahavidyalaya, Nilanga, India
| | | | - Jhillu S Yadav
- Chemistry, Indian Institute of Chemical Technology, Hyderabad, India
| | - B V Subba Reddy
- Chemistry, Indian Institute of Chemical Technology, Hyderabad, India
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2
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Padmaja P, Reddy PN, Subba Reddy BV. Tandem Prins cyclizations for the construction of oxygen containing heterocycles. Org Biomol Chem 2020; 18:7514-7532. [PMID: 32940271 DOI: 10.1039/d0ob00960a] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Tandem Prins cyclization is a versatile method for the synthesis of fused/bridged/spirotetrahydropyran scaffolds. Therefore, it has become a powerful tool for the stereoselective synthesis of oxygen/nitrogen containing heterocycles. Indeed, previous review articles on Prins spirocyclization illustrate the synthesis of spirotetrahydropyran derivatives and the aza-Prins reaction demonstrates its application in the total synthesis of natural products. The current review is devoted specifically to highlight tandem Prins cyclizations for the construction of fused scaffolds and related frameworks with a particular emphasis on recent applications. The mechanistic aspects and the scope of the methods are briefly discussed herein.
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Affiliation(s)
- P Padmaja
- Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, India.
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3
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Rasvan Khan P, Charan PHK, Rao MB. FeCl3 catalyzed prins cylization for the synthesis of angularly fused polycyclic scaffolds. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1700523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- P. Rasvan Khan
- Department of Chemistry, K.L. Education Foundation (Deemed to be Univesity), Guntur, India
- Department of Chemistry, Krishna University, Machilipatnam, India
| | - P. H. K. Charan
- Department of Chemistry, K.L. Education Foundation (Deemed to be Univesity), Guntur, India
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4
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Nair PN, Swathi V, Nishigandha G, Sridhar B, Reddy JG, Reddy BVS. Construction of Oxa-Bridged Tetracyclic Frameworks through a Prins Bicyclic Annulation. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801788] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Preethi N. Nair
- Fluoro & Agrochemicals; CSIR-Indian Institute of Chemical Technology; 500 007 Hyderabad India
| | - Vangala Swathi
- Fluoro & Agrochemicals; CSIR-Indian Institute of Chemical Technology; 500 007 Hyderabad India
| | - Ghaytadak Nishigandha
- Fluoro & Agrochemicals; CSIR-Indian Institute of Chemical Technology; 500 007 Hyderabad India
| | - Balasubramanian Sridhar
- Laboratory of X-ray Crystallography; CSIR-Indian Institute of Chemical Technology; 500 007 Hyderabad India
| | - Jithender G Reddy
- Academy of Scientific and Innovative Research (AcSIR); New Delhi - 110025 India
| | - Basi V. Subba Reddy
- Fluoro & Agrochemicals; CSIR-Indian Institute of Chemical Technology; 500 007 Hyderabad India
- Centre for NMR and Structural Chemistry; CSIR-Indian Institute of Chemical Technology; 500 007 Hyderabad India
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5
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Satteyyanaidu V, Sridhar B, Reddy BVS. TMSOTf‐Promoted Synthesis of 4‐(2‐Aryl or 2‐Alkyl‐3,6‐dihydro‐2
H
‐pyran‐4‐yl)‐1,2,3,6‐tetrahydropyridine Derivatives. ChemistrySelect 2019. [DOI: 10.1002/slct.201803896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Vallabhareddy Satteyyanaidu
- Fluoro & AgrochemicalsLaboratory for X-ray CrystallographyCSIR-Indian Institute of Chemical Technology Hyderabad –500 007 India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi-110025, India
| | - Balasubramanian Sridhar
- Fluoro & AgrochemicalsLaboratory for X-ray CrystallographyCSIR-Indian Institute of Chemical Technology Hyderabad –500 007 India
| | - Basi V. Subba Reddy
- Fluoro & AgrochemicalsLaboratory for X-ray CrystallographyCSIR-Indian Institute of Chemical Technology Hyderabad –500 007 India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi-110025, India
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6
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Sakata Y, Yasui E, Mizukami M, Nagumo S. Cascade reaction including a formal [5 + 2] cycloaddition by use of alkyne-Co2(CO)6 complex. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.01.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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7
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Chandrashekhar R, Vemulapalli SPB, Sridhar B, Subba Reddy BV. Stereoselective Construction of Spiro-Indolenine Frameworks through a Prins/Friedel-Crafts Cyclization Cascade Reaction. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701812] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
| | | | - Balasubramanian Sridhar
- Laboratory of X-ray Crystallography; CSIR-Indian Institute of Chemical Technology; 500007 Hyderabad India
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8
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Tandem Prins cyclization for the synthesis of 1,8-dioxa-3-azaspiro[4.5]dec-2-ene derivatives. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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9
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Someswarao B, P. RK, Reddy BJM, B. S, B. VSR. Tandem Prins-type cyclization for the stereoselective construction of fused polycyclic ring systems. Org Chem Front 2018. [DOI: 10.1039/c7qo01164d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A novel strategy has been developed for the synthesis of fused tetrahydrofuro[3,2-c]pyrano[2,3-b]chromene derivatives through the condensation of 2-hydroxybenzaldehydes with 2-(3,4-dihydro-2H-pyran-5-yl)ethan-1-ol in the presence of 20 mol% TMSOTf.
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Affiliation(s)
- B. Someswarao
- Centre for Semiochemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500 007
- India
- Laboratory of X-ray crystallography
| | - Rasvan Khan P.
- Centre for Semiochemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500 007
- India
| | - B. Jagan Mohan Reddy
- Laboratory of X-ray crystallography
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500 007
- India
| | - Sridhar B.
- Department of Organic Chemistry
- Adikavi Nannaya University
- Rajahmundry
- India
| | - V. Subba Reddy B.
- Centre for Semiochemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500 007
- India
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10
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Kummari VB, Yadav JS, Kankaraju M, Reddy BVS. Tandem Prins Spirocyclization for the Synthesis of 1,8-Dioxaspiro[4.5]decane and 1,9-Dioxaspiro[5.5]undecane Scaffolds. ChemistrySelect 2017. [DOI: 10.1002/slct.201702163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Vijaya Babu Kummari
- Centre for Semiochemicals; CSIR-Indian Institute of Chemical Technology; Hyderabad - 500 007 India
| | - Jhillu S. Yadav
- Centre for Semiochemicals; CSIR-Indian Institute of Chemical Technology; Hyderabad - 500 007 India
| | - Marumudi Kankaraju
- Centre for Nuclear Magnetic Resonance; CSIR-Indian Institute of Chemical Technology; Hyderabad - 500 007 India
| | - Basi V. Subba Reddy
- Centre for Semiochemicals; CSIR-Indian Institute of Chemical Technology; Hyderabad - 500 007 India
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11
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Subba Reddy BV, Nair PN, Antony A, Srivastava N. Recent Advances in Prins Spirocyclization. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700633] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- B. V. Subba Reddy
- Centre for Semio Chemicals; CSIR - Indian Institute of Chemical Technology; Hyderabad India
| | - Preethi Narayanan Nair
- Centre for Semio Chemicals; CSIR - Indian Institute of Chemical Technology; Hyderabad India
| | - Aneesh Antony
- Centre for Semio Chemicals; CSIR - Indian Institute of Chemical Technology; Hyderabad India
| | - Nikhil Srivastava
- Centre for Semio Chemicals; CSIR - Indian Institute of Chemical Technology; Hyderabad India
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12
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Díez-Poza C, Barbero A. Synthesis of O- and N-Heterocycles by Silyl-Prins Cyclization of Allylsilanes. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700644] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Carlos Díez-Poza
- Department of Organic Chemistry; University of Valladolid; Campus Miguel Delibes 47011 Valladolid Spain
| | - Asunción Barbero
- Department of Organic Chemistry; University of Valladolid; Campus Miguel Delibes 47011 Valladolid Spain
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13
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Prins cyclization of isoprenol with various aldehydes using MoO3/SiO2 as a catalyst. REACTION KINETICS MECHANISMS AND CATALYSIS 2017. [DOI: 10.1007/s11144-016-1131-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Subba Reddy BV, Srivastava N, Begum Z, Lakshmi JK, Sridhar B. Tandem Prins Cyclization for the Stereoselective Synthesis of Bridged Benzopyran Derivatives. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600196] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Basi V. Subba Reddy
- Centre for Semiochemicals; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007 India
| | - Nikhil Srivastava
- Centre for Semiochemicals; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007 India
| | - Zubeda Begum
- Centre for Semiochemicals; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007 India
| | - Jerripothula K. Lakshmi
- Centre for Nuclear Magnetic Resonance; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007 India
| | - Balasubramanian Sridhar
- Laboratory for X-ray crystallography; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007 India
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15
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Barbero A, Diez-Varga A, Pulido FJ, González-Ortega A. Synthesis of Azepane Derivatives by Silyl-aza-Prins Cyclization of Allylsilyl Amines: Influence of the Catalyst in the Outcome of the Reaction. Org Lett 2016; 18:1972-5. [PMID: 27074135 DOI: 10.1021/acs.orglett.6b00538] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of seven-membered nitrogen heterocycles by silyl-aza-Prins cyclization is described. The process provides trans-azepanes in high yields and good to excellent diastereoselectivities. Moreover, the reaction outcome is dependent on the Lewis acid employed. Thus, while azepanes are selectively obtained when InCl3 is used, the reaction in the presence of TMSOTf provides tetrahydropyran derivatives corresponding to a tandem Sakurai-Prins cyclization.
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Affiliation(s)
- Asunción Barbero
- Departamento de Química Orgánica, Facultad de Ciencias, University of Valladolid , Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Alberto Diez-Varga
- Departamento de Química Orgánica, Facultad de Ciencias, University of Valladolid , Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Francisco J Pulido
- Departamento de Química Orgánica, Facultad de Ciencias, University of Valladolid , Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Alfonso González-Ortega
- Departamento de Química Orgánica, Facultad de Ciencias, University of Valladolid , Campus Miguel Delibes, 47011 Valladolid, Spain
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16
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Barbero A, Diez-Varga A, Herrero M, Pulido FJ. From Silylated Trishomoallylic Alcohols to Dioxaspiroundecanes or Oxocanes: Catalyst and Substitution Influence. J Org Chem 2016; 81:2704-12. [PMID: 26952324 DOI: 10.1021/acs.joc.5b02260] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A versatile method for the synthesis of dioxaspiroundecanes through a tandem Sakurai-Prins cyclization of allylsilyl alcohols in the presence of TMSOTf is described. The process is general and highly stereoselective with total control in the creation of three new stereogenic centers in a single step. Moreover, a very interesting chemoselectivity has been observed depending on the nature of the catalyst used or the substitution of the trishomoallylic alcohol, since the same reaction under BF3·OEt2 catalysis or using alcohols with allylic substituents provides exclusively the corresponding oxocanes, by a direct silyl-Prins cyclization.
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Affiliation(s)
- Asunción Barbero
- Departamento de Química Orgánica, Facultad de Ciencias , Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Alberto Diez-Varga
- Departamento de Química Orgánica, Facultad de Ciencias , Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Manuel Herrero
- Departamento de Química Orgánica, Facultad de Ciencias , Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Francisco J Pulido
- Departamento de Química Orgánica, Facultad de Ciencias , Campus Miguel Delibes, 47011 Valladolid, Spain
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17
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Reddy BS, Swathi V, Bhadra MP, Raju MK, Kunwar A. Tandem vinylcyclopropane ring opening/Prins cyclization for the synthesis of 2,3-disubstituted tetrahydropyrans. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Millán A, Smith JR, Chen JLY, Aggarwal VK. Tandem Allylboration-Prins Reaction for the Rapid Construction of Substituted Tetrahydropyrans: Application to the Total Synthesis of (−)-Clavosolide A. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511140] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alba Millán
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - James R. Smith
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Jack L.-Y. Chen
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
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19
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Millán A, Smith JR, Chen JLY, Aggarwal VK. Tandem Allylboration-Prins Reaction for the Rapid Construction of Substituted Tetrahydropyrans: Application to the Total Synthesis of (-)-Clavosolide A. Angew Chem Int Ed Engl 2016; 55:2498-502. [PMID: 26766494 PMCID: PMC4755224 DOI: 10.1002/anie.201511140] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Indexed: 01/25/2023]
Abstract
Tetrahydropyrans are common motifs in natural products and have now been constructed with high stereocontrol through a three‐component allylboration‐Prins reaction sequence. This methodology has been applied to a concise (13 steps) and efficient (14 % overall yield) synthesis of the macrolide (−)‐clavosolide A. The synthesis also features an early stage glycosidation reaction to introduce the xylose moiety and a lithiation‐borylation reaction to attach the cyclopropyl‐containing side chain.
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Affiliation(s)
- Alba Millán
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - James R Smith
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Jack L-Y Chen
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Varinder K Aggarwal
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
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20
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Subba Reddy BV, Biradar DO, Vikram Reddy Y, Yadav JS, Singarapu KK, Sridhar B. Substitution dependent stereoselective construction of bicyclic lactones and its application to the total synthesis of pyranopyran, tetraketide and polyrhacitide A. Org Biomol Chem 2016; 14:8832-8837. [DOI: 10.1039/c6ob01686c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel strategy has been developed for the synthesis of bicyclic lactones and has been successfully applied to the total synthesis of pyranopyran, tetraketide, and polyrhacitide A.
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Affiliation(s)
| | | | | | - J. S. Yadav
- Centre for Semiochemicals
- Hyderabad –500 007
- India
| | | | - B. Sridhar
- Laboratory of X-ray Crystallography
- CSIR-Indian Institute of Chemical Technology
- Hyderabad –500 007
- India
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21
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Subba Reddy BV, Hanuman Reddy V, Medaboina D, Sridhar B, Rami Reddy YV. A tandem Prins spirocyclization for the stereoselective synthesis of tetrahydrospiro[chroman-2,4′-pyran] derivatives. Org Biomol Chem 2016; 14:3234-7. [DOI: 10.1039/c5ob02639c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel cascade process has been developed for the synthesis of tetrahydrospiro[chroman-2,4′-pyran] derivatives by condensation of aldehydes with 2-(5-hydroxy-3-methylenepentyl)phenols using BF3·OEt2 under mild reaction conditions.
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Affiliation(s)
- B. V. Subba Reddy
- Natural Product Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - V. Hanuman Reddy
- Natural Product Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
- Department of Chemistry
| | | | - B. Sridhar
- Laboratory of X-ray Crystallography
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
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22
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Reddy MR, Kumar GR, Yarlagadda S, Reddy CR, Yadav JS, Sridhar B, Reddy BVS. Sequential hydroarylation/Prins cyclization: an efficient strategy for the synthesis of angularly fused tetrahydro-2H-pyrano[3,4-c]quinolines. RSC Adv 2016. [DOI: 10.1039/c6ra21375h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Various aldehydes undergo a smooth cascade cyclization with N-(5-hydroxypent-2-yn-1-yl)-4-methyl-N-phenylbenzenesulfonamide in the presence of 10 mol% Ph3PAuCl/AgSbF6/In(OTf)3 to furnish the corresponding tetrahydro-2H-pyrano[3,4-c]quinoline derivatives.
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Affiliation(s)
- M. Rajashekhar Reddy
- Centre for Semiochemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - G. Ravi Kumar
- Centre for Semiochemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Suresh Yarlagadda
- Centre for Semiochemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - C. Ravikumar Reddy
- Centre for Semiochemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - J. S. Yadav
- Centre for Semiochemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - B. Sridhar
- Laboratory of X-ray Crystallography
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - B. V. Subba Reddy
- Centre for Semiochemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
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23
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Reddy BVS, Medaboina D, Reddy SG, Reddy VH, Singarapu KK, Sridhar B. Domino Strategy for the Stereoselective Construction of Angularly Fused Tricyclic Ethers. J Org Chem 2015; 80:12580-7. [PMID: 26562722 DOI: 10.1021/acs.joc.5b02241] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A stereoselective synthesis of decahydrofuro[3,2-d]isochromene derivatives has been achieved by the condensation of 2-cyclohexenylbutane-1,4-diol with aldehydes in the presence of a stochiometric amount of BF3·OEt2 in dichloromethane at -78 °C. Similarly, the condensation of 2-cyclopentenylbutan-1,4-diol with aldehydes provides the corresponding octahydro-2H-cyclopenta[c]furo[2,3-d]pyran derivatives in good yields with high diastereoselectivity. It is an elegant strategy for the quick construction of tricyclic architectures with four contiguous stereogenic centers in a single step. These tricyclic frameworks are the integral part of numerous natural products.
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Affiliation(s)
- B V Subba Reddy
- Natural Product Chemistry, ‡Centre for Nuclear Magnetic Resonance, §Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology , Hyderabad - 500 007, India
| | - Durgaprasad Medaboina
- Natural Product Chemistry, ‡Centre for Nuclear Magnetic Resonance, §Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology , Hyderabad - 500 007, India
| | - S Gopal Reddy
- Natural Product Chemistry, ‡Centre for Nuclear Magnetic Resonance, §Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology , Hyderabad - 500 007, India
| | - V Hanuman Reddy
- Natural Product Chemistry, ‡Centre for Nuclear Magnetic Resonance, §Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology , Hyderabad - 500 007, India
| | - Kiran Kumar Singarapu
- Natural Product Chemistry, ‡Centre for Nuclear Magnetic Resonance, §Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology , Hyderabad - 500 007, India
| | - Balasubramanian Sridhar
- Natural Product Chemistry, ‡Centre for Nuclear Magnetic Resonance, §Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology , Hyderabad - 500 007, India
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24
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Venkateswarlu A, Kanakaraju M, Kunwar AC, Rami Reddy YV, Reddy BVS. Domino Prins Cyclization of Enynols: Stereoselective Synthesis of Bicyclic Vinyl Fluorides. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500689] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Reddy BVS, Someswarao B, Prudhviraju N, Reddy BJM, Sridhar B, Kumar SK. An iodine catalyzed metal free domino process for the stereoselective synthesis of oxygen bridged bicyclic ethers. Org Biomol Chem 2015; 13:6737-41. [PMID: 25994362 DOI: 10.1039/c5ob00518c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A domino reaction has been developed for the synthesis of oxygen bridged bicyclic ethers through the coupling of 4-(2-hydroxyethyl)cyclohex-3-enols with aldehydes in the presence of 10 mol% of molecular iodine in dichloromethane at 25 °C. This method is highly diastereoselective affording the corresponding bicyclic ethers, i.e. octahydro-4a,7-epoxyisochromenes in good yields with high selectivity. It is the first report on the synthesis of oxygen bridged bicyclic ethers using a domino Prins strategy.
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Affiliation(s)
- B V Subba Reddy
- Natural Product Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, 500 007, Hyderabad, India.
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Subba Reddy BV, Prudhvi Raju N, Someswarao B, Mohan Reddy BJ, Sridhar B, Marumudi K, Kunwar AC. A novel domino cyclization for the stereoselective synthesis of indeno[2,1-c]pyran and cyclopenta[c]pyran derivatives. Org Biomol Chem 2015; 13:4733-6. [PMID: 25804904 DOI: 10.1039/c5ob00376h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A novel bicyclization of 2-(2-(hydroxymethyl)-1-methylene-2,3-dihydro-1H-inden-2-yl)ethanol with aldehydes in the presence of 10 mol% BF3·OEt2 in dichloromethane at 0-25 °C affords the biologically relevant indeno[2,1-c]pyran scaffolds in good yields with high selectivity. Similarly the bicyclization of 2-(1-(hydroxymethyl)-2-methylenecyclopentyl)ethanol with aldehydes generates the corresponding cyclopenta[c]pyran derivatives under similar conditions. This method is very useful to produce hematoxylin and brazilin like scaffolds.
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Affiliation(s)
- B V Subba Reddy
- Natural Product Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500 007, India.
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Reddy BVS, Reddy MR, Reddy SG, Sridhar B, Kumar SK. Tandem Prins Cyclization for the Stereoselective Synthesis of the 4,5-Diaryl-hexahydropyrano[3,4-c]chromene Skeleton of Calyxins I and J. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500117] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Reddy BVS, Yarlagadda S, Reddy CR, Reddy MR, Sridhar B, Satyanarayana D, Jagadeesh B. Tandem Prins Strategy for the Synthesis of Spiropyrrolidine and Spiropiperidine Derivatives. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500215] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Reddy BVS, Venkateswarlu A, Sridevi B, Marumudi K, Kunwar AC, Gayatri G. A novel Prins cascade process for the stereoselective synthesis of oxa-bicycles. Org Biomol Chem 2015; 13:2669-72. [PMID: 25582106 DOI: 10.1039/c4ob02347a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
E- and Z-9-Methyldeca-3,8-dien-1-ols undergo smooth cyclization with aldehydes in the presence of 20 mol% AgSbF6 under extremely mild conditions to generate the corresponding oxa-bicycles in good yields with excellent selectivity. In fact, E-olefin affords the trans-product exclusively, whereas the Z-olefin gives the cis-product predominantly. In the case of E- or Z-8-methylnona-3,8-dien-1-ol, the product is formed via the termination of Prins cyclization with an allylic C-H bond through olefin migration. The termination of Prins cyclization with tethered olefin is an unprecedented reaction, which provides a useful motif of various natural products.
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Affiliation(s)
- B V Subba Reddy
- Natural Product Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500 007, India.
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Barbero A, Barbero H, González-Ortega A, Pulido FJ, Val P, Diez-Varga A, Morán JR. Efficient access to polysubstituted tetrahydrofurans by electrophilic cyclization of vinylsilyl alcohols. RSC Adv 2015. [DOI: 10.1039/c5ra06640a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Stereocontrolled access to polysubstituted tetrahydrofurans from organosilanes.
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Affiliation(s)
- Asunción Barbero
- Department of Organic Chemistry
- University of Valladolid
- 47011 Valladolid
- Spain
| | - Héctor Barbero
- Department of Chemical Physics and Inorganic Chemistry
- 47011 Valladolid
- Spain
| | | | - Francisco J. Pulido
- Department of Organic Chemistry
- University of Valladolid
- 47011 Valladolid
- Spain
| | - Patricia Val
- Department of Organic Chemistry
- University of Valladolid
- 47011 Valladolid
- Spain
| | - Alberto Diez-Varga
- Department of Organic Chemistry
- University of Valladolid
- 47011 Valladolid
- Spain
| | - Joaquín R. Morán
- Department of Organic Chemistry
- University of Salamanca
- Salamanca
- Spain
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Diez-Varga A, Barbero H, Pulido FJ, González-Ortega A, Barbero A. Competitive silyl-Prins cyclization versus tandem Sakurai-Prins cyclization: an interesting substitution effect. Chemistry 2014; 20:14112-9. [PMID: 25196494 DOI: 10.1002/chem.201403421] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Indexed: 11/11/2022]
Abstract
Two different mechanism pathways are observed for the reaction of allylsilyl alcohols 1 and aldehydes in the presence of trimethylsilyl trifluoromethanesulfonate (TMSOTf). In the case of allylsilyl alcohols without allylic substituents, the reaction gives dioxaspirodecanes, which are the products of a tandem Sakurai-Prins cyclization. In contrast, allylsilyl alcohols with an allylic substituent (R(2)≠H) selectively provide oxepanes, thus corresponding to a direct silyl-Prins cyclization. Both types of product are obtained with excellent stereoselectivity. Theoretical studies have been performed to obtain some rationalization for the observed stereoselectivity.
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Affiliation(s)
- Alberto Diez-Varga
- Department of Organic Chemistry, University of Valladolid, Campus Miguel Delibes, 47011 Valladolid (Spain), Fax: (+34) 983423013
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Song XN, Lu L, Hua SK, Chen WD, Ren J. One-pot synthesis of aromatic homoallylic alcohols from aldehydes and Grignard reagents promoted by Titanium(IV) tetraisopropanolate. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.08.070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Subba Reddy BV, Gopal Reddy S, Ramana Reddy M, Pal Bhadra M, Sarma AVS. Tandem Prins/pinacol reaction for the synthesis of oxaspiro[4.5]decan-1-one scaffolds. Org Biomol Chem 2014; 12:7257-60. [DOI: 10.1039/c4ob01188k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Reddy BVS, Kumar H, Reddy PS, Singarapu KK. Prins Spirocyclization for the Synthesis of Spiro[isobenzofuran-pyran] Derivatives. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402157] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Reddy BVS, Jalal S, Singarapu KK. InCl3-catalyzed Prins bicyclization for the synthesis of spirotetrahydropyran derivatives. RSC Adv 2014. [DOI: 10.1039/c4ra01503g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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