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López MM, Jamey N, Pinet A, Figadère B, Ferrié L. Oxidative Ring Expansion of Cyclobutanols: Access to Functionalized 1,2-Dioxanes. Org Lett 2021; 23:1626-1631. [DOI: 10.1021/acs.orglett.1c00070] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
| | - Nicolas Jamey
- BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry 92290, France
| | - Alexis Pinet
- BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry 92290, France
| | - Bruno Figadère
- BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry 92290, France
| | - Laurent Ferrié
- BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry 92290, France
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2
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Kawauchi G, Umemiya S, Taniguchi T, Monde K, Hayashi Y. Enantio- and Diastereoselective Synthesis of Latanoprost using an Organocatalyst. Chemistry 2018; 24:8409-8414. [PMID: 29603816 DOI: 10.1002/chem.201800829] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Indexed: 11/08/2022]
Abstract
An enantioselective total synthesis of latanoprost was achieved. Its chiral cyclopentane core structure was constructed through an organocatalyst-mediated [3+2]-cycloaddition reaction, and chirality in the ω-side chain was generated by prolinate-anion-mediated α-aminoxylation of an aldehyde. Highly diastereoselective domino acetalization and an oxy-Michael reaction were key steps for the generation of C9 chirality.
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Affiliation(s)
- Genki Kawauchi
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan
| | - Shigenobu Umemiya
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan
| | - Tohru Taniguchi
- Faculty of Advanced Life Science, Frontier Research Center for, Advanced Material and Life Science, Hokkaido University, Kita 21 Nishi 11, Sapporo, 001-0021, Japan
| | - Kenji Monde
- Faculty of Advanced Life Science, Frontier Research Center for, Advanced Material and Life Science, Hokkaido University, Kita 21 Nishi 11, Sapporo, 001-0021, Japan
| | - Yujiro Hayashi
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan
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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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4
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Beaver MG, Buscagan TM, Lavinda O, Woerpel KA. Stereoelectronic Model To Explain Highly Stereoselective Reactions of Seven-Membered-Ring Oxocarbenium-Ion Intermediates. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201507806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Trixia M. Buscagan
- Department of Chemistry and Chemical Engineering; California Institute of Technology; 1200 E. California Blvd, MNC 101-20 Pasadena CA 91125 USA
| | - Olga Lavinda
- Department of Chemistry; New York University; 100 Washington Square East New York NY 10003 USA
| | - K. A. Woerpel
- Department of Chemistry; New York University; 100 Washington Square East New York NY 10003 USA
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5
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Beaver MG, Buscagan TM, Lavinda O, Woerpel KA. Stereoelectronic Model To Explain Highly Stereoselective Reactions of Seven-Membered-Ring Oxocarbenium-Ion Intermediates. Angew Chem Int Ed Engl 2016; 55:1816-9. [PMID: 26791884 DOI: 10.1002/anie.201507806] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 10/20/2015] [Indexed: 11/11/2022]
Abstract
Nucleophilic attack on seven-membered-ring oxocarbenium ions is generally highly stereoselective. The preferred mode of nucleophilic attack forms the product in a conformation that minimizes transannular interactions, thus leading to different stereoselectivity as compared to that of reactions involving six-membered-ring oxocarbenium ions.
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Affiliation(s)
| | - Trixia M Buscagan
- Department of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MNC 101-20, Pasadena, CA, 91125, USA
| | - Olga Lavinda
- Department of Chemistry, New York University, 100 Washington Square East, New York, NY, 10003, USA
| | - K A Woerpel
- Department of Chemistry, New York University, 100 Washington Square East, New York, NY, 10003, USA.
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Fuwa H, Fukazawa R, Sasaki M. Concise synthesis of the A/BCD-ring fragment of gambieric acid A. Front Chem 2015; 2:116. [PMID: 25629027 PMCID: PMC4292782 DOI: 10.3389/fchem.2014.00116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 12/18/2014] [Indexed: 11/17/2022] Open
Abstract
Gambieric acid A (GAA) and its congeners belong to the family of marine polycyclic ether natural products. Their highly complex molecular architecture and unique biological activities have been of intense interest within the synthetic community. We have previously reported the first total synthesis, stereochemical reassignment, and preliminary structure–activity relationships of GAA. Here we disclose a concise synthesis of the A/BCD-ring fragment of GAA. The synthesis started from our previously reported synthetic intermediate that represents the A/B-ring. The C-ring was synthesized via an oxiranyl anion coupling and a 6-endo cyclization, and the D-ring was forged by means of an oxidative lactonization and subsequent palladium-catalyzed functionalization of the lactone ring. In this manner, the number of linear synthetic steps required for the construction of the C- and D-rings was reduced from 22 to 11.
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Affiliation(s)
- Haruhiko Fuwa
- Graduate School of Life Sciences, Tohoku University Sendai, Japan
| | - Ryo Fukazawa
- Graduate School of Life Sciences, Tohoku University Sendai, Japan
| | - Makoto Sasaki
- Graduate School of Life Sciences, Tohoku University Sendai, Japan
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Sheikh NS. Stereoselective synthesis of trans-THF rings using an oxidative cyclisation-radical deoxygenation sequence: application to the formal synthesis of trans-(2R,5R)-linalool oxide. RSC Adv 2015. [DOI: 10.1039/c4ra13258k] [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
Permanganate-mediated oxidative cyclisation-Barton–McCombie radical deoxygenation sequence is applied to 1,5-dienes to achieve stereoselective synthesis of trans-2,5-disubstituted THF rings.
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Affiliation(s)
- Nadeem S. Sheikh
- Department of Chemistry
- Faculty of Science
- King Faisal University
- Al-Ahsa 31982
- Saudi Arabia
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8
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Kusunuru AK, Yousuf SK, Tatina M, Mukherjee D. DesulfitativeC-Arylation of Glycals by Using Benzenesulfonyl Chlorides. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403195] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Sasaki M, Fuwa H. Total synthesis and complete structural assignment of gambieric acid A, a large polycyclic ether marine natural product. CHEM REC 2014; 14:678-703. [PMID: 25092231 DOI: 10.1002/tcr.201402052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Indexed: 12/30/2022]
Abstract
More than thirty years after the discovery of polycyclic ether marine natural products, they continue to receive intense attention from the chemical, biological, and pharmacological communities because of their potent biological activities and highly complex molecular architectures. Gambieric acids are intriguing polycyclic ethers that exhibit potent antifungal activity with minimal toxicity against mammals. Despite the recent advances in the synthesis of this class of natural products, gambieric acids remain unconquered due to their daunting structural complexity, which poses a formidable synthetic challenge to organic chemists. This paper reviews our long-term studies on the total synthesis, complete configurational reassignment, and structure-activity relationships of gambieric acid A over the last decade.
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Affiliation(s)
- Makoto Sasaki
- Graduate School of Life Sciences, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan.
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