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1
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Roy TK, Gorad SS, Ghorai P. Chiral Squaramide Catalyzed Asymmetric Spiroketalization toward Aromatic [6,5] Spiroketals. Org Lett 2022; 24:1889-1894. [PMID: 35238574 DOI: 10.1021/acs.orglett.2c00074] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein is disclosed an efficient enantio- and diastereoselective spiroketalization of aromatic ketone tethered to ortho-homoformyl and enone moiety via in situ enol formation using quinine derived squaramide organocatalyst to access aromatic [6,5] spiroketals with complete atom economy. Furthermore, aromatic spiroketals undergo Brønsted acid catalyzed Piancatelli type rearrangement to provide dihydronaphtho[1,2-b]furans with retention of the enantioselectivities.
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Affiliation(s)
- Tarun Kumar Roy
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, India
| | - Sachin S Gorad
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, India
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2
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Morioka R, Fujita T, Ichikawa J. Facile Synthesis of 2‐Fluorobenzofurans: 5‐
endo
‐
trig
Cyclization of β,β‐Difluoro‐
o‐
hydroxystyrenes. Helv Chim Acta 2020. [DOI: 10.1002/hlca.202000159] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ryutaro Morioka
- Division of Chemistry Faculty of Pure and Applied Sciences University of Tsukuba Tsukuba Ibaraki 305-8571 Japan
| | - Takeshi Fujita
- Division of Chemistry Faculty of Pure and Applied Sciences University of Tsukuba Tsukuba Ibaraki 305-8571 Japan
| | - Junji Ichikawa
- Division of Chemistry Faculty of Pure and Applied Sciences University of Tsukuba Tsukuba Ibaraki 305-8571 Japan
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3
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Liu N, Zhu W, Yao J, Yin L, Lu T, Dou X. Catalyst-Controlled Chemodivergent Synthesis of Spirochromans from Diarylideneacetones and Organoboronic Acids. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05577] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Na Liu
- Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Wanjiang Zhu
- Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
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4
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Midya A, Maity S, Ghorai P. Dynamic Kinetic Spiroketalization/Oxa-Michael Addition Cascade of Alkoxyboronates and Peroxyacetals: Enantio- and Diastereoselective Synthesis of Benzannulated Spiroketals. Chemistry 2017. [DOI: 10.1002/chem.201701291] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Abhisek Midya
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road, Bhauri Bhopal 462066 India
| | - Sanjay Maity
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road, Bhauri Bhopal 462066 India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road, Bhauri Bhopal 462066 India
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5
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Scheepstra M, Andrei SA, Unver MY, Hirsch AKH, Leysen S, Ottmann C, Brunsveld L, Milroy LG. Designed Spiroketal Protein Modulation. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Marcel Scheepstra
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems (ICMS); Department of Biomedical Engineering; Technische Universiteit Eindhoven; Den Dolech 2 5612 AZ Eindhoven The Netherlands
| | - Sebastian A. Andrei
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems (ICMS); Department of Biomedical Engineering; Technische Universiteit Eindhoven; Den Dolech 2 5612 AZ Eindhoven The Netherlands
| | - M. Yagiz Unver
- Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 7 9747AG Groningen The Netherlands
| | - Anna K. H. Hirsch
- Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 7 9747AG Groningen The Netherlands
| | - Seppe Leysen
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems (ICMS); Department of Biomedical Engineering; Technische Universiteit Eindhoven; Den Dolech 2 5612 AZ Eindhoven The Netherlands
| | - Christian Ottmann
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems (ICMS); Department of Biomedical Engineering; Technische Universiteit Eindhoven; Den Dolech 2 5612 AZ Eindhoven The Netherlands
- Department of Chemistry; University of Duisburg-Essen; Universitätstr. 7 45141 Essen Germany
| | - Luc Brunsveld
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems (ICMS); Department of Biomedical Engineering; Technische Universiteit Eindhoven; Den Dolech 2 5612 AZ Eindhoven The Netherlands
| | - Lech-Gustav Milroy
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems (ICMS); Department of Biomedical Engineering; Technische Universiteit Eindhoven; Den Dolech 2 5612 AZ Eindhoven The Netherlands
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6
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Scheepstra M, Andrei SA, Unver MY, Hirsch AKH, Leysen S, Ottmann C, Brunsveld L, Milroy LG. Designed Spiroketal Protein Modulation. Angew Chem Int Ed Engl 2017; 56:5480-5484. [PMID: 28407400 PMCID: PMC5435924 DOI: 10.1002/anie.201612504] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 02/17/2017] [Indexed: 02/03/2023]
Abstract
Spiroketals are structural motifs found in many biologically active natural products, which has stimulated considerable efforts toward their synthesis and interest in their use as drug lead compounds. Despite this, the use of spiroketals, and especially bisbenzanulated spiroketals, in a structure-based drug discovery setting has not been convincingly demonstrated. Herein, we report the rational design of a bisbenzannulated spiroketal that potently binds to the retinoid X receptor (RXR) thereby inducing partial co-activator recruitment. We solved the crystal structure of the spiroketal-hRXRα-TIF2 ternary complex, and identified a canonical allosteric mechanism as a possible explanation for the partial agonist behavior of our spiroketal. Our co-crystal structure, the first of a designed spiroketal-protein complex, suggests that spiroketals can be designed to selectively target other nuclear receptor subtypes.
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Affiliation(s)
- Marcel Scheepstra
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ, Eindhoven, The Netherlands
| | - Sebastian A Andrei
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ, Eindhoven, The Netherlands
| | - M Yagiz Unver
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747AG, Groningen, The Netherlands
| | - Anna K H Hirsch
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747AG, Groningen, The Netherlands
| | - Seppe Leysen
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ, Eindhoven, The Netherlands
| | - Christian Ottmann
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ, Eindhoven, The Netherlands.,Department of Chemistry, University of Duisburg-Essen, Universitätstr. 7, 45141, Essen, Germany
| | - Luc Brunsveld
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ, Eindhoven, The Netherlands
| | - Lech-Gustav Milroy
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ, Eindhoven, The Netherlands
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7
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Karak M, Acosta JAM, Barbosa LCA, Boukouvalas J. Late-Stage Bromination Enables the Synthesis of Rubrolides B, I, K, and O. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600473] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Milandip Karak
- Department of Chemistry; Universidade Federal de Minas Gerais; Av. Pres. Antônio Carlos, 6627, Campus Pampulha CEP 31270-901 Belo Horizonte MG Brazil
- Department of Chemistry; Universidade Federal de Viçosa; Av. Peter Henry Rolfs, s/n Campus Universitário CEP 36570-900 Viçosa MG Brazil
| | - Jaime A. M. Acosta
- Department of Chemistry; Universidade Federal de Minas Gerais; Av. Pres. Antônio Carlos, 6627, Campus Pampulha CEP 31270-901 Belo Horizonte MG Brazil
| | - Luiz C. A. Barbosa
- Department of Chemistry; Universidade Federal de Minas Gerais; Av. Pres. Antônio Carlos, 6627, Campus Pampulha CEP 31270-901 Belo Horizonte MG Brazil
- Department of Chemistry; Universidade Federal de Viçosa; Av. Peter Henry Rolfs, s/n Campus Universitário CEP 36570-900 Viçosa MG Brazil
| | - John Boukouvalas
- Department of Chemistry; Universidade Federal de Minas Gerais; Av. Pres. Antônio Carlos, 6627, Campus Pampulha CEP 31270-901 Belo Horizonte MG Brazil
- Department of Chemistry; Université Laval; Pavillon Alexandre-Vachon, 1045 Avenue de la Médecine G1V 0A6 Quebec City, Quebec Canada
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8
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Khomutnyk YY, Argüelles AJ, Winschel GA, Sun Z, Zimmerman PM, Nagorny P. Studies of the Mechanism and Origins of Enantioselectivity for the Chiral Phosphoric Acid-Catalyzed Stereoselective Spiroketalization Reactions. J Am Chem Soc 2015; 138:444-56. [DOI: 10.1021/jacs.5b12528] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yaroslav Ya. Khomutnyk
- Department of Chemistry, University of Michigan, 930 North University
Avenue, Ann Arbor, Michigan 48109, United States
| | - Alonso J. Argüelles
- Department of Chemistry, University of Michigan, 930 North University
Avenue, Ann Arbor, Michigan 48109, United States
| | - Grace A. Winschel
- Department of Chemistry, University of Michigan, 930 North University
Avenue, Ann Arbor, Michigan 48109, United States
| | - Zhankui Sun
- Department of Chemistry, University of Michigan, 930 North University
Avenue, Ann Arbor, Michigan 48109, United States
| | - Paul M. Zimmerman
- Department of Chemistry, University of Michigan, 930 North University
Avenue, Ann Arbor, Michigan 48109, United States
| | - Pavel Nagorny
- Department of Chemistry, University of Michigan, 930 North University
Avenue, Ann Arbor, Michigan 48109, United States
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9
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Hubert JG, Furkert DP, Brimble MA. Synthesis of the Spirocyclic Framework of Sesterterpenoid Natural Products. J Org Chem 2015; 80:2715-23. [DOI: 10.1021/jo502897u] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Jonathan G. Hubert
- School of Chemical Sciences
and Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, 23 Symonds Street, Auckland 1142, New Zealand
| | - Daniel. P. Furkert
- School of Chemical Sciences
and Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, 23 Symonds Street, Auckland 1142, New Zealand
| | - Margaret A. Brimble
- School of Chemical Sciences
and Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, 23 Symonds Street, Auckland 1142, New Zealand
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10
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Atkinson DJ, Brimble MA. Isolation, biological activity, biosynthesis and synthetic studies towards the rubromycin family of natural products. Nat Prod Rep 2015; 32:811-40. [DOI: 10.1039/c4np00153b] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rubromycins are a unique family of natural products. This review covers their isolation, biological activity, biosynthesis and a detailed discussion of the diverse chemistry employed for total synthesis.
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Affiliation(s)
- Darcy J. Atkinson
- School of Chemical Sciences, The University of Auckland
- Auckland
- New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland
- Auckland
| | - Margaret A. Brimble
- School of Chemical Sciences, The University of Auckland
- Auckland
- New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland
- Auckland
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11
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Ondrisek P, Schwenk R, Cvengroš J. Synthesis of enantiomerically pure Tröger's base derivatives via chiral disulfoxides. Chem Commun (Camb) 2014; 50:9168-71. [DOI: 10.1039/c4cc03963g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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