1
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Park S, Myeong IS, Ham WH. Recent advances in the total synthesis of polyhydroxylated alkaloids via chiral oxazines. Org Biomol Chem 2024; 22:894-926. [PMID: 38230703 DOI: 10.1039/d3ob01624b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
This review summarizes recently established methodologies developed for the enantioselective and diastereoselective synthesis of chiral 1,3-oxazines. These compounds are of interest as advanced synthetic intermediates in the total synthesis of structurally complex and biologically active polyhydroxylated alkaloids such as (+)-1-deoxynojirimycin, (-)-anisomycin, (+)-castanospermine, (+)-casuarine, (-)-conduramine F-1, (-)-sphingofungin B, Neu5Ac methyl ester, and other natural products. The devised synthetic approach aims to offer a direct, efficient, and adaptable method for obtaining both pure enantiomers and pure diastereomers. It revolves around utilizing chiral building blocks like syn,syn-, syn,syn,anti-, syn,anti-, syn,anti,syn-, anti,syn-, anti,syn,syn-, and anti,syn,anti-oxazines. By integrating oxazine chemistry with established and innovative transformations, this approach enabled the synthesis of 30 polyhydroxylated amines across various studies conducted between 2007 and 2022.
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Affiliation(s)
- Seokhwi Park
- YS Life Science Co., Ltd, 207, Sujeong-ro, Jangan-myeon, Hwaseong-si, Gyeonggi-do, 18581, Republic of Korea.
| | - In-Soo Myeong
- College of Pharmacy, Daegu Catholic University, 13-13, Hayang-ro, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do, 38430, Republic of Korea.
| | - Won-Hun Ham
- YS Life Science Co., Ltd, 207, Sujeong-ro, Jangan-myeon, Hwaseong-si, Gyeonggi-do, 18581, Republic of Korea.
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Suwon-si, Gyeonggi-do, 16419, Republic of Korea
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2
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Fábian M, Novotná M, Raschmanová JŠ, Vargová K, Martinková M, Pilátová MB, Kešeľáková A. Divergent access to a novel 3,4-diaminophytosphingosine-like ceramide via sequential Overman rearrangement. Carbohydr Res 2023; 530:108874. [PMID: 37336150 DOI: 10.1016/j.carres.2023.108874] [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: 05/15/2023] [Revised: 06/11/2023] [Accepted: 06/15/2023] [Indexed: 06/21/2023]
Abstract
A straightforward approach to a novel phytosphingosine-like ceramide has been accomplished. The cornerstone features of this divergent synthesis are a cascade Overman rearrangement of tris(imidate) to introduce three desired stereogenic centres via sequential chirality transfer and an effective olefin cross-metathesis to install a long side chain. The final unusual phytoceramides were evaluated for their capacity to inhibit the proliferation of cancer cell lines. The preliminary results revealed that compound 21 exhibits promising anticancer activity against HeLa and HCT-116 cells as well as the excellent selectivity in cytotoxicity (malignant vs non-malignant cell lines).
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Affiliation(s)
- Martin Fábian
- Institute of Chemical Sciences, Department of Organic Chemistry, P.J. Šafárik University, Moyzesova 11, 040 01, Košice, Slovak Republic
| | - Michaela Novotná
- Institute of Chemical Sciences, Department of Organic Chemistry, P.J. Šafárik University, Moyzesova 11, 040 01, Košice, Slovak Republic
| | - Jana Špaková Raschmanová
- Institute of Chemical Sciences, Department of Organic Chemistry, P.J. Šafárik University, Moyzesova 11, 040 01, Košice, Slovak Republic
| | - Kristína Vargová
- Institute of Chemical Sciences, Department of Organic Chemistry, P.J. Šafárik University, Moyzesova 11, 040 01, Košice, Slovak Republic
| | - Miroslava Martinková
- Institute of Chemical Sciences, Department of Organic Chemistry, P.J. Šafárik University, Moyzesova 11, 040 01, Košice, Slovak Republic.
| | - Martina Bago Pilátová
- Institute of Pharmacology, Faculty of Medicine, P.J. Šafárik University, SNP 1, 040 66, Košice, Slovak Republic
| | - Alexandra Kešeľáková
- Institute of Pharmacology, Faculty of Medicine, P.J. Šafárik University, SNP 1, 040 66, Košice, Slovak Republic
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3
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Ichikawa Y, Kinutani T, Sakogawa Y, Nakanishi K, Ochi R, Hosokawa S, Masuda T. Stereocontrolled Synthesis of Nitrogen-Substituted Quaternary Stereogenic Centers: Lessons from a Synthetic Route to the Core Structure of Sphingofungin E. HETEROCYCLES 2023. [DOI: 10.3987/com-23-14817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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4
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Cox JB, Kellum AA, Zhang Y, Li B, Smith AB. Total Synthesis of (-)-Bastimolide A: A Showcase for Type I Anion Relay Chemistry. Angew Chem Int Ed Engl 2022; 61:e202204884. [PMID: 35608327 PMCID: PMC9256807 DOI: 10.1002/anie.202204884] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Indexed: 05/31/2024]
Abstract
A highly convergent total synthesis of (-)-bastimolide A (1), a polyhydroxy antimalarial macrolide, has been achieved via a longest linear sequence of twenty steps from commercially available glycidyl ethers. Type I Anion Relay Chemistry (ARC) coupling tactics enable rapid construction of the molecule's 1,5-polylol backbone. A late-stage B-alkyl Suzuki-Miyaura union and an Evans-modified Mukaiyama macrolactonization generate the forty-membered Z-α,β-unsaturated macrocyclic lactone.
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Affiliation(s)
- Joshua B Cox
- Department of Chemistry, University of Pennsylvania, 231 S. 34th street, Philadelphia, PA 19104, USA
| | - Alex A Kellum
- Department of Chemistry, University of Pennsylvania, 231 S. 34th street, Philadelphia, PA 19104, USA
| | - Yiwen Zhang
- Department of Chemistry, University of Pennsylvania, 231 S. 34th street, Philadelphia, PA 19104, USA
| | - Bo Li
- Department of Chemistry, University of Pennsylvania, 231 S. 34th street, Philadelphia, PA 19104, USA
| | - Amos B Smith
- Department of Chemistry, University of Pennsylvania, 231 S. 34th street, Philadelphia, PA 19104, USA
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5
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Cox JB, Kellum AA, Zhang Y, Li B, Smith AB. Total Synthesis of (−)‐Bastimolide A: A Showcase for Type I Anion Relay Chemistry. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Joshua B. Cox
- Department of Chemistry University of Pennsylvania 231 S. 34th street Philadelphia PA 19104 USA
| | - Alex A. Kellum
- Department of Chemistry University of Pennsylvania 231 S. 34th street Philadelphia PA 19104 USA
| | - Yiwen Zhang
- Department of Chemistry University of Pennsylvania 231 S. 34th street Philadelphia PA 19104 USA
| | - Bo Li
- Department of Chemistry University of Pennsylvania 231 S. 34th street Philadelphia PA 19104 USA
| | - Amos B. Smith
- Department of Chemistry University of Pennsylvania 231 S. 34th street Philadelphia PA 19104 USA
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6
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Raguž L, Peng C, Kaiser M, Görls H, Beemelmanns C. A Modular Approach to the Antifungal Sphingofungin Family: Concise Total Synthesis of Sphingofungin A and C. Angew Chem Int Ed Engl 2022; 61:e202112616. [PMID: 34677894 PMCID: PMC9300042 DOI: 10.1002/anie.202112616] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/21/2021] [Indexed: 12/17/2022]
Abstract
Sphingofungins are fungal natural products known to inhibit the biosynthesis of sphingolipids which play pivotal roles in various cell functions. Here, we report a short and flexible synthetic approach towards the sphingofungin family. Key step of the synthesis was a decarboxylative cross-coupling reaction of chiral sulfinyl imines with a functionalized tartaric acid derivative, which yielded the core motif of sphingofungins carrying four consecutive stereocenters and a terminal double bond. Subsequent metathesis reaction allowed for the introduction of different side chains of choice resulting in a total of eight sphingofungins, including for the first time sphingofungin C (eight steps from commercially available protected tartaric acid with an overall yield of 6 %) and sphingofungin A (ten steps). All newly synthesized derivatives were tested for their antifungal, cell-proliferative and antiparasitic activity unraveling their structure-activity relations.
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Affiliation(s)
- Luka Raguž
- Chemical Biology of Microbe–Host InteractionsLeibniz Institute for Natural Product Research and Infection BiologyBeutenbergstrasse 11A07745JenaGermany
| | - Chia‐Chi Peng
- Chemical Biology of Microbe–Host InteractionsLeibniz Institute for Natural Product Research and Infection BiologyBeutenbergstrasse 11A07745JenaGermany
| | - Marcel Kaiser
- Parasite ChemotherapySwiss Tropical and Public Health InstituteSocinstrasse 574002BaselSwitzerland
- University of BaselPetersplatz 14003BaselSwitzerland
| | - Helmar Görls
- Institute for Inorganic and Analytical ChemistryFriedrich-Schiller-UniversityLessingstrasse 807743JenaGermany
| | - Christine Beemelmanns
- Chemical Biology of Microbe–Host InteractionsLeibniz Institute for Natural Product Research and Infection BiologyBeutenbergstrasse 11A07745JenaGermany
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7
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Raguž L, Peng C, Kaiser M, Görls H, Beemelmanns C. A Modular Approach to the Antifungal Sphingofungin Family: Concise Total Synthesis of Sphingofungin A and C. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Luka Raguž
- Chemical Biology of Microbe–Host Interactions Leibniz Institute for Natural Product Research and Infection Biology Beutenbergstrasse 11A 07745 Jena Germany
| | - Chia‐Chi Peng
- Chemical Biology of Microbe–Host Interactions Leibniz Institute for Natural Product Research and Infection Biology Beutenbergstrasse 11A 07745 Jena Germany
| | - Marcel Kaiser
- Parasite Chemotherapy Swiss Tropical and Public Health Institute Socinstrasse 57 4002 Basel Switzerland
- University of Basel Petersplatz 1 4003 Basel Switzerland
| | - Helmar Görls
- Institute for Inorganic and Analytical Chemistry Friedrich-Schiller-University Lessingstrasse 8 07743 Jena Germany
| | - Christine Beemelmanns
- Chemical Biology of Microbe–Host Interactions Leibniz Institute for Natural Product Research and Infection Biology Beutenbergstrasse 11A 07745 Jena Germany
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8
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Inuki S, Ohno H. Total Syntheses of Myriocin, Mycestericins and Sphingofungin E: Sphingosine Analogues Containing a β, β′-Dihydroxy α-Amino Acid Framework. CHEM LETT 2021. [DOI: 10.1246/cl.210133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shinsuke Inuki
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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9
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Okuyama Y, Okamoto R, Mukai S, Kinoshita K, Sato T, Chida N. Synthesis of Saxitoxin and Its Derivatives. Org Lett 2020; 22:8697-8701. [PMID: 33104353 DOI: 10.1021/acs.orglett.0c03281] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The chiral synthesis of (+)-saxitoxin and its derivatives is described. Two consecutive carbon-nitrogen bonds at C-5 and C-6 in saxitoxin were effectively installed by the sequential Overman rearrangement of an allylic vicinal diol derived from d-malic acid. The bicyclic guanidine unit was constructed by the intramolecular aminal formation of an acyclic bis-guanidine derivative possessing a ketone carbonyl at C-4. From the bicyclic aminal intermediate, (+)-saxitoxin, (+)-decarbamoyl-β-saxitoxinol [(+)-dc-β-saxitoxinol], and the unnatural skeletal isomer, (-)-iso-dc-saxitoxinol, were synthesized.
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Affiliation(s)
- Yuya Okuyama
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Ryosuke Okamoto
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Shori Mukai
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Kyoko Kinoshita
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Takaaki Sato
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Noritaka Chida
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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10
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Narczyk A, Stecko S. The synthesis of unnatural α-alkyl- and α-aryl-substituted serine derivatives. Org Biomol Chem 2020; 18:1204-1213. [PMID: 31995087 DOI: 10.1039/c9ob02472g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of α-aryl- and α-alkyl-substituted serine derivatives via [3,3]-sigmatropic rearrangement of allyl carbamates as a key step is reported. Allyl carbamates were obtained from the corresponding allyl alcohols. The former were prepared through three approaches. Aryl-substituted ones were synthesized via the Stille coupling reaction of aryl iodides with enantiomerically enriched vinyl stannanes. Conversely, alkyl-substituted allyl alcohols were prepared by an analogous strategy involving the Negishi coupling reaction of enantiomerically enriched vinyl iodides or by enzymatic kineric resolution of the corresponding racemic alcohols.
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Affiliation(s)
- Aleksandra Narczyk
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Sebastian Stecko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
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11
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Tong X, Shi B, Liang K, Liu Q, Xia C. Enantioselective Total Synthesis of (+)‐Flavisiamine F via Late‐Stage Visible‐Light‐Induced Photochemical Cyclization. Angew Chem Int Ed Engl 2019; 58:5443-5446. [PMID: 30884052 DOI: 10.1002/anie.201901241] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 02/18/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Xiaogang Tong
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaKunming Institute of Botany, CAS Kunming 650201 Yunnan China
| | - Bingfei Shi
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
| | - Kangjiang Liang
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
| | - Qian Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
| | - Chengfeng Xia
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaKunming Institute of Botany, CAS Kunming 650201 Yunnan China
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12
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Tong X, Shi B, Liang K, Liu Q, Xia C. Enantioselective Total Synthesis of (+)‐Flavisiamine F via Late‐Stage Visible‐Light‐Induced Photochemical Cyclization. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901241] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiaogang Tong
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaKunming Institute of Botany, CAS Kunming 650201 Yunnan China
| | - Bingfei Shi
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
| | - Kangjiang Liang
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
| | - Qian Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
| | - Chengfeng Xia
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaKunming Institute of Botany, CAS Kunming 650201 Yunnan China
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13
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Raschmanová JŠ, Martinková M, Gonda J, Pilátová MB, Kupka D, Jáger D. Synthesis of the cytotoxic phytosphingosines and their isomeric analogues. Carbohydr Res 2018; 468:1-12. [DOI: 10.1016/j.carres.2018.08.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 08/03/2018] [Accepted: 08/03/2018] [Indexed: 01/26/2023]
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14
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Sugai T, Usui S, Tsuzaki S, Oishi H, Yasushima D, Hisada S, Fukuyasu T, Oishi T, Sato T, Chida N. Synthesis of β-Hydroxy-α,α-disubstituted Amino Acids through the Orthoamide-Type Overman Rearrangement of an α,β-Unsaturated Ester and Stereodivergent Intramolecular SN2′ Reaction: Development and Application to the Total Synthesis of Sphingofungin F. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170408] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Tomoya Sugai
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Shunme Usui
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Shun Tsuzaki
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Hiroki Oishi
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Daichi Yasushima
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Shoko Hisada
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Takahiro Fukuyasu
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Takeshi Oishi
- School of Medicine, Keio University, 4-1-1 Hiyoshi, Kohoku-ku, Yokohama 223-8521, Japan
| | - Takaaki Sato
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Noritaka Chida
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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15
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Noda N, Nambu H, Fujiwara T, Yakura T. Total Synthesis of Sphingofungin E and 4,5-Di-epi-sphingofungin E. Chem Pharm Bull (Tokyo) 2017; 65:687-696. [PMID: 28674344 DOI: 10.1248/cpb.c17-00322] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Total synthesis of sphingofungin E and 4,5-di-epi-sphingofungin E was achieved from an intermediate same as that of myriocin and mycestericin D via antipodal stereoselective dihydroxylations.
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Affiliation(s)
- Narumi Noda
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama
| | - Hisanori Nambu
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama
| | - Tomoya Fujiwara
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama
| | - Takayuki Yakura
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama
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16
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Kumar V, Klimovica K, Rasina D, Jirgensons A. 2-Vinyl Threoninol Derivatives via Acid-Catalyzed Allylic Substitution of Bisimidates. J Org Chem 2015; 80:5934-43. [PMID: 25941908 DOI: 10.1021/acs.joc.5b00529] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A diastereoselective synthesis of 4-vinyl oxazolines syn-2 was developed based on an acid-catalyzed cyclization of bistrichloroacetimidates (E)-1. The reaction likely involves an allyl carbenium ion intermediate in which the adjacent stereocenter directs the stereoselectivity for C-N bond formation. Oxazolines syn-2 were transformed to C-quaternary threoninol, threoninal, and threonine derivatives which can be further incorporated into complex natural compounds.
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Affiliation(s)
- Varun Kumar
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga, Latvia LV 1006
| | - Kristine Klimovica
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga, Latvia LV 1006
| | - Dace Rasina
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga, Latvia LV 1006
| | - Aigars Jirgensons
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga, Latvia LV 1006
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17
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Tsuzaki S, Usui S, Oishi H, Yasushima D, Fukuyasu T, Oishi T, Sato T, Chida N. Total Synthesis of Sphingofungin F by Orthoamide-Type Overman Rearrangement of an Unsaturated Ester. Org Lett 2015; 17:1704-7. [DOI: 10.1021/acs.orglett.5b00475] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shun Tsuzaki
- Department
of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Shunme Usui
- Department
of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Hiroki Oishi
- Department
of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Daichi Yasushima
- Department
of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Takahiro Fukuyasu
- Department
of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Takeshi Oishi
- School
of Medicine, Keio University, 4-1-1, Hiyoshi, Kohoku-ku, Yokohama 223-8521, Japan
| | - Takaaki Sato
- Department
of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Noritaka Chida
- Department
of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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18
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Park SH, Jin X, Kang JC, Jung C, Kim SS, Kim SS, Lee KY, Ham WH. Chirality extension of an oxazine building block en route to total syntheses of (+)-hyacinthacine A2 and sphingofungin B. Org Biomol Chem 2015; 13:4539-50. [DOI: 10.1039/c5ob00251f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Concise total syntheses of (+)-hyacinthacine A2 and sphingofungin B were achieved by palladium(0)-catalyzed intramolecular oxazine formation and diastereoselective nucleophilic additions.
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Affiliation(s)
- Seok-Hwi Park
- School of Pharmacy
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
| | - Xiangdan Jin
- School of Pharmacy
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
| | - Jong-Cheol Kang
- School of Pharmacy
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
| | - Changyoung Jung
- School of Pharmacy
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
| | - Seong-Soo Kim
- School of Pharmacy
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
| | - Sung-Soo Kim
- School of Pharmacy
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
| | - Kee-Young Lee
- Yonsung Fine Chemicals Co
- Ltd
- Hwaseong 445-944, Republic of Korea
| | - Won-Hun Ham
- School of Pharmacy
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
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19
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Iwata M, Kamijoh Y, Nagasawa K. Synthetic Studies of Oroidin-derived Pyrrole-imidazole Alkaloids. J SYN ORG CHEM JPN 2015. [DOI: 10.5059/yukigoseikyokaishi.73.1092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | - Kazuo Nagasawa
- Faculty of Technology, Tokyo University of Agriculture and Technology
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20
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Adachi M, Imazu T, Sakakibara R, Satake Y, Isobe M, Nishikawa T. Total Synthesis of Chiriquitoxin, an Analogue of Tetrodotoxin Isolated from the Skin of a Dart Frog. Chemistry 2014; 20:1247-51. [DOI: 10.1002/chem.201304110] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Indexed: 11/11/2022]
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21
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Ikeuchi K, Hayashi M, Yamamoto T, Inai M, Asakawa T, Hamashima Y, Kan T. Stereocontrolled Total Synthesis of Sphingofungin E. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301065] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Nishikawa T, Isobe M. Synthesis of tetrodotoxin, a classic but still fascinating natural product. CHEM REC 2013; 13:286-302. [PMID: 23661608 DOI: 10.1002/tcr.201200025] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Indexed: 01/04/2023]
Abstract
Tetrodotoxin, a toxic principle of puffer fish intoxication, is one of the most famous marine natural products due to its densely functionalized structure and potent toxicity. Despite its small molecular size (MW 319 g mol⁻¹), tetrodotoxin has long been well known as a formidable molecule in natural product synthesis. We have devoted more than twenty years to developing synthetic strategies for this molecule, resulting in the preparation of a variety of analogues of tetrodotoxin for biological experiments. This account describes a brief history of tetrodotoxin research and an overview of our synthetic efforts toward tetrodotoxin with the underlying logic and strategy.
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Affiliation(s)
- Toshio Nishikawa
- Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, Japan.
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23
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Chen DYK, Youn SW. C-H activation: a complementary tool in the total synthesis of complex natural products. Chemistry 2012; 18:9452-74. [PMID: 22736530 DOI: 10.1002/chem.201201329] [Citation(s) in RCA: 451] [Impact Index Per Article: 37.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Indexed: 02/05/2023]
Abstract
The recent advent of transition-metal mediated C-H activation is revolutionizing the synthetic field and gradually infusing a "C-H activation mind-set" in both students and practitioners of organic synthesis. As a powerful testament of this emerging synthetic tool, applications of C-H activation in the context of total synthesis of complex natural products are beginning to blossom. Herein, recently completed total syntheses showcasing creative and ingenious incorporation of C-H activation as a strategic manoeuver are compared with their "non-C-H activation" counterparts, illuminating a new paradigm in strategic synthetic design.
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Affiliation(s)
- David Y-K Chen
- Department of Chemistry, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 151-742, South Korea.
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24
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Martinková M, Gonda J, Uhríková A, Raschmanová JŠ, Kuchár J. An efficient synthesis of the polar part of sulfamisterin and its analogs. Carbohydr Res 2012; 352:23-36. [DOI: 10.1016/j.carres.2012.02.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Revised: 02/16/2012] [Accepted: 02/17/2012] [Indexed: 11/15/2022]
Affiliation(s)
- Miroslava Martinková
- Institute of Chemical Sciences, Department of Organic Chemistry, P.J. Šafárik University, Moyzesova 11, Sk-040 01 Košice, Slovak Republic.
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25
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Affiliation(s)
- Yuji Kaiya
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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26
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Davies SG, Fletcher AM, Kurosawa W, Lee JA, Poce G, Roberts PM, Thomson JE, Williamson DM. One-Pot Conversions of Olefins to Cyclic Carbonates and Secondary Allylic and Homoallylic Amines to Cyclic Carbamates. J Org Chem 2010; 75:7745-56. [DOI: 10.1021/jo101614f] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stephen G. Davies
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Ai M. Fletcher
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Wataru Kurosawa
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - James A. Lee
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Giovanna Poce
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Paul M. Roberts
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - James E. Thomson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - David M. Williamson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
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27
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Total synthesis of a protected form of sphingofungin E using the [3,3]-sigmatropic rearrangement of an allylic thiocyanate as the key reaction. Carbohydr Res 2010; 345:2427-37. [PMID: 20943213 DOI: 10.1016/j.carres.2010.09.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2010] [Revised: 09/08/2010] [Accepted: 09/13/2010] [Indexed: 11/22/2022]
Abstract
An approach to the stereocontrolled synthesis of the protected form of sphingofungin E (32) starting from the known protected d-glucose derivative 3 is described herein. For the construction of a tetrasubstituted carbon atom that is substituted with nitrogen, the [3,3]-sigmatropic rearrangement of thiocyanate 8 was employed. Subsequent functional group interconversions afforded the highly functionalized fragment, allylic bromide 26. Its coupling reaction with the known C(12) hydrophobic segment 2, followed by further manipulation, completed the total synthesis.
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28
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Yamanaka H, Sato K, Sato H, Iida M, Oishi T, Chida N. Total synthesis of mycestericin A and its 14-epimer. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.09.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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29
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Hama N, Matsuda T, Sato T, Chida N. Total synthesis of (-)-agelastatin A: the application of a sequential sigmatropic rearrangement. Org Lett 2009; 11:2687-90. [PMID: 19449885 DOI: 10.1021/ol900799e] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An enantioselective total synthesis of (-)-agelastatin A from (-)-2,3-O-isopropylidene-d-threitol is described. The sequential Overman/Mislow-Evans rearrangement of the allylic bistrichloroimidate is the key step, which efficiently installed a diaminohydroxy group.
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Affiliation(s)
- Naoto Hama
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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30
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Wang B, Lin GQ. A Flexible Common Approach to α-Substituted Serines and Alanines: Diastereoconvergent Syntheses of Sphingofungins E and F. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900772] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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31
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32
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Imaoka T, Iwamoto O, Noguchi KI, Nagasawa K. Total Synthesis of (+)-Dibromophakellin. Angew Chem Int Ed Engl 2009; 48:3799-801. [DOI: 10.1002/anie.200806233] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Sano S, Nakao M, Takeyasu M, Yoshioka Y, Nagao Y, Kitaike S. Use of Diketopiperazines for Determining Absolute Configurations of α-Substituted Serines by 1H-NMR Spectroscopy. HETEROCYCLES 2009. [DOI: 10.3987/com-08-s(d)47] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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34
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Gajdosíková E, Martinková M, Gonda J, Conka P. Microwave accelerated aza-Claisen rearrangement. Molecules 2008; 13:2837-47. [PMID: 19015623 PMCID: PMC6245460 DOI: 10.3390/molecules131102837] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2008] [Revised: 10/28/2008] [Accepted: 11/04/2008] [Indexed: 11/16/2022] Open
Abstract
A study of microwave-induced and standard thermal Overman rearrangement of selected allylic trichloroacetimidates 1a-1f, 6-8 to the corresponding acetamides 2a-2f, 9-11 is reported. The microwave-assisted rearrangement of trifluoroacetimidate 13 is also described. Using this methodology, an efficient access to versatile allylic trihaloacetamides building synthons was established.
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Affiliation(s)
- Eva Gajdosíková
- Institute of Chemical Sciences, Department of Organic Chemistry, PJ Safárik University, Kosice, Slovak Republic.
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35
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36
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Matveenko M, Kokas OJ, Banwell MG, Willis AC. Chemoenzymatic Approaches to Lycorine-Type Amaryllidaceae Alkaloids: Total Syntheses of ent-Lycoricidine, 3-epi-ent-Lycoricidine, and 4-Deoxy-3-epi-ent-lycoricidine. Org Lett 2007; 9:3683-5. [PMID: 17685535 DOI: 10.1021/ol701552r] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The readily available and enzymatically derived cis-1,2-dihydrocatechol 4 has been elaborated, over 11 steps including an Overman rearrangement, into the non-natural enantiomer, (-)-1, of the alkaloid lycoricidine [(+)-1]. Related chemistries have provided analogues 18, 19, and 26.
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Affiliation(s)
- Maria Matveenko
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, ACT 0200, Australia
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37
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Urabe D, Nishikawa T, Isobe M. An efficient total synthesis of optically active tetrodotoxin from levoglucosenone. Chem Asian J 2007; 1:125-35. [PMID: 17441047 DOI: 10.1002/asia.200600038] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Tetrodotoxin, a toxic principal of puffer-fish poisoning, is one of the most famous marine natural products, and has been known as a formidable synthetic target in synthesis owing to its multifunctional structure and unusual chemical properties. From the perspective of supplying tetrodotoxin derivatives such as labeled molecules for biochemical research, we have completed our second total synthesis of tetrodotoxin from a synthetic intermediate for 11-deoxytetrodotoxin, which was previously prepared from levoglucosenone as a chiral starting material in this laboratory. This paper discloses the details of the total synthesis with special reference to significant influences on the neighboring functional groups found in the installation of guanidine. The established route should allow us to prepare the tetrodotoxin-related compounds required for biochemical studies.
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Affiliation(s)
- Daisuke Urabe
- Laboratory of Organic Chemistry, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
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38
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Berkowitz DB, Wu B, Li H. A formal [3,3]-sigmatropic rearrangement route to quaternary alpha-vinyl amino acids: use of allylic N-PMP trifluoroacetimidates. Org Lett 2006; 8:971-4. [PMID: 16494487 PMCID: PMC2504469 DOI: 10.1021/ol060019s] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pd(II)-mediated rearrangement of allylic N-PMP (p-methoxyphenyl) trifluoroacetimidates provides the first formal sigmatropic route to quaternary, alpha-vinylic amino acids, potential suicide substrates for PLP enzymes. The amino acid side chains enter via transition-metal-mediated C-C bond constructions, including (i) Cu(I)-mediated conjugate addition (Ala); (ii) Pd(0)/AsPh3-mediated Stille coupling (allyl-Gly, Phe, DOPA, m-Tyr); and (iii) Pd(0)/Pt-Bu3-mediated Negishi coupling (Leu). In the synthesis of the DOPA decarboxylase inactivator, alpha-vinyl-m-tyrosine, the new N-PMP trifluoroacetimidate rearranges much more efficiently than the corresponding trichloroacetimidate.
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Affiliation(s)
- David B Berkowitz
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, USA.
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39
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Efficient enantioselective synthesis of orthogonally protected (R)-α-alkylserines compatible with the solid phase peptide synthesis. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.08.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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40
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Wascholowski V, Giannis A, Pitsinos EN. Influence of the Scyphostatin Side Chain on the Mode of Inhibition of Neutral Sphingomyelinase. ChemMedChem 2006; 1:718-21. [PMID: 16902925 DOI: 10.1002/cmdc.200600099] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Veit Wascholowski
- Institut für Organische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
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41
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Jaunzeme I, Jirgensons A, Kauss V, Liepins E. Diastereoselectivity in the Overman rearrangement of O-cyclohexylideneethylimidates. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.03.174] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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42
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Hayes CJ, Bradley DM, Thomson NM. An Efficient Enantioselective Synthesis of (2R)-Hydroxymethyl Glutamic Acid and an Approach to the (2R)-Hydroxymethyl-Substituted Sphingofungins. J Org Chem 2006; 71:2661-5. [PMID: 16555818 DOI: 10.1021/jo052408q] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have developed a short enantioselective synthesis of (2R)-hydroxymethyl glutamic acid (HMG) starting from Garner's aldehyde using an alkylidene carbene 1,5-CH insertion as a method to construct the quaternary stereocenter. A variety of conditions were examined for the oxidative cleavage of the key cyclopentene intermediate and we found that RuCl3/NaIO4 led directly to the desired amino bis-acid product. We were also able to show that oxidative cleavage of the cyclopentene 1,5-CH insertion product could be used to produce the amino acid-containing skeleton of the sphingofungin family of natural products.
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Affiliation(s)
- Christopher J Hayes
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom.
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43
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Kang SH, Kang SY, Lee HS, Buglass AJ. Total synthesis of natural tert-alkylamino hydroxy carboxylic acids. Chem Rev 2006; 105:4537-58. [PMID: 16351053 DOI: 10.1021/cr040608g] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sung Ho Kang
- Center for Molecular Design and Synthesis, Department of Chemistry, School of Molecular Science (BK21), Korea Advanced Institute of Science and Technology (KAIST), Daejeon
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44
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Ohfune Y, Shinada T. Enantio‐ and Diastereoselective Construction of α,α‐Disubstituted α‐Amino Acids for the Synthesis of Biologically Active Compounds. European J Org Chem 2005. [DOI: 10.1002/ejoc.200500434] [Citation(s) in RCA: 274] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yasufumi Ohfune
- Department of Materials Science, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi‐ku, Osaka 558‐8585, Japan
| | - Tetsuro Shinada
- Department of Materials Science, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi‐ku, Osaka 558‐8585, Japan
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45
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46
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47
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Lane JW, Halcomb RL. A New Method for the Stereoselective Synthesis of α-Substituted Serine Amino Acid Analogues. Org Lett 2003; 5:4017-20. [PMID: 14572238 DOI: 10.1021/ol034984j] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text]. A new method was developed for the stereoselective synthesis of alpha-substituted serine amino acids. The strategy utilizes a common enantiomerically enriched intermediate obtained through an enzymatic desymmetrization. A variety of amino acids were synthesized in good ee's through nucleophilic acetylide addition reactions and palladium-catalyzed Sonogashira couplings.
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Affiliation(s)
- Jonathan W Lane
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, USA
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48
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Lane JW, Halcomb RL. Stereoselective synthesis of conformationally constrained glycosylated amino acids using an enzyme-catalyzed desymmetrization. J Org Chem 2003; 68:1348-57. [PMID: 12585874 DOI: 10.1021/jo020532t] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
As part of an effort to probe the mechanism by which glycosyltransferases recognize glycoproteins and assemble the core structures of O-linked oligosaccharides, constrained glycopeptides, compounds 2 and 3, based on the alpha-N-acetylgalactosaminyl serine substructure 1, were designed. In this paper we describe a stereoselective preparation of protected versions of these compounds. A pig liver esterase-catalyzed enzymatic desymmetrization of a diacetate substrate, 10, was employed as a key component in the synthesis.
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Affiliation(s)
- Jonathan W Lane
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, USA
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49
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50
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Oishi T, Ando K, Inomiya K, Sato H, Iida M, Chida N. Total Synthesis of (+)-Myriocin and (−)-Sphingofungin E from Aldohexoses Using Overman Rearrangement as the Key Reaction. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2002. [DOI: 10.1246/bcsj.75.1927] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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