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Gan XC, Kotesova S, Castanedo A, Green SA, Mølle SLB, Shenvi RA. Iron-Catalyzed Hydrobenzylation: Stereoselective Synthesis of (-)-Eugenial C. J Am Chem Soc 2023; 145:15714-15720. [PMID: 37437221 PMCID: PMC11055631 DOI: 10.1021/jacs.3c05428] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Metal-hydride hydrogen atom transfer (MHAT) has emerged as a useful tool to form quaternary carbons from alkenes via hydrofunctionalization. Methods to date that cross-couple alkenes with sp3 partners rely on heterobimetallic catalysis to merge the two cycles. Here, we report an iron-only cross-coupling via putative MHAT/SH2 steps that solves a key stereochemical problem in the synthesis of meroterpenoid eugenial C and obviates the need for nickel. The concise synthesis benefits from a conformationally locked o,o'-disubstituted benzyl bromide and a locally sourced chiral pool terpene coupling partner.
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Affiliation(s)
- Xu-cheng Gan
- Department of Chemistry, Scripps Research, La Jolla, California 92037, United States
| | - Simona Kotesova
- Department of Chemistry, Scripps Research, La Jolla, California 92037, United States
- Graduate School of Chemical and Biological Sciences, Scripps Research, La Jolla, California 92037, United States
| | - Alberto Castanedo
- Department of Chemistry, Scripps Research, La Jolla, California 92037, United States
| | - Samantha A. Green
- Department of Chemistry, Scripps Research, La Jolla, California 92037, United States
- Graduate School of Chemical and Biological Sciences, Scripps Research, La Jolla, California 92037, United States
| | | | - Ryan A. Shenvi
- Department of Chemistry, Scripps Research, La Jolla, California 92037, United States
- Graduate School of Chemical and Biological Sciences, Scripps Research, La Jolla, California 92037, United States
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Magano J. Large-Scale Amidations in Process Chemistry: Practical Considerations for Reagent Selection and Reaction Execution. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00005] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Javier Magano
- Chemical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut 06340, United States
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Szymkuć S, Gajewska EP, Molga K, Wołos A, Roszak R, Beker W, Moskal M, Dittwald P, Grzybowski BA. Computer-generated "synthetic contingency" plans at times of logistics and supply problems: scenarios for hydroxychloroquine and remdesivir. Chem Sci 2020; 11:6736-6744. [PMID: 33033595 PMCID: PMC7500088 DOI: 10.1039/d0sc01799j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 06/02/2020] [Indexed: 01/21/2023] Open
Abstract
A computer program for retrosynthetic planning helps develop multiple "synthetic contingency" plans for hydroxychloroquine and also routes leading to remdesivir, both promising but yet unproven medications against COVID-19. These plans are designed to navigate, as much as possible, around known and patented routes and to commence from inexpensive and diverse starting materials, so as to ensure supply in case of anticipated market shortages of commonly used substrates. Looking beyond the current COVID-19 pandemic, development of similar contingency syntheses is advocated for other already-approved medications, in case such medications become urgently needed in mass quantities to face other public-health emergencies.
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Affiliation(s)
- Sara Szymkuć
- Institute of Organic Chemistry , Polish Academy of Sciences , ul. Kasprzaka 44/52 , Warsaw 02-224 , Poland .
| | - Ewa P Gajewska
- Institute of Organic Chemistry , Polish Academy of Sciences , ul. Kasprzaka 44/52 , Warsaw 02-224 , Poland .
| | - Karol Molga
- Institute of Organic Chemistry , Polish Academy of Sciences , ul. Kasprzaka 44/52 , Warsaw 02-224 , Poland .
| | - Agnieszka Wołos
- Institute of Organic Chemistry , Polish Academy of Sciences , ul. Kasprzaka 44/52 , Warsaw 02-224 , Poland .
| | - Rafał Roszak
- Institute of Organic Chemistry , Polish Academy of Sciences , ul. Kasprzaka 44/52 , Warsaw 02-224 , Poland .
| | - Wiktor Beker
- Institute of Organic Chemistry , Polish Academy of Sciences , ul. Kasprzaka 44/52 , Warsaw 02-224 , Poland .
| | - Martyna Moskal
- Institute of Organic Chemistry , Polish Academy of Sciences , ul. Kasprzaka 44/52 , Warsaw 02-224 , Poland .
| | - Piotr Dittwald
- Institute of Organic Chemistry , Polish Academy of Sciences , ul. Kasprzaka 44/52 , Warsaw 02-224 , Poland .
| | - Bartosz A Grzybowski
- Institute of Organic Chemistry , Polish Academy of Sciences , ul. Kasprzaka 44/52 , Warsaw 02-224 , Poland .
- IBS Center for Soft and Living Matter , 50, UNIST-gil, Eonyang-eup, Ulju-gun , Ulsan , 689-798 , South Korea
- Department of Chemistry , UNIST , 50, UNIST-gil, Eonyang-eup, Ulju-gun , Ulsan , 689-798 , South Korea
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