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Zhang T, Nishiura Y, Cusumano AQ, Stoltz BM. Palladium-Catalyzed Asymmetric Conjugate Addition of Arylboronic Acids to α,β-Unsaturated Lactams: Enantioselective Construction of All-Carbon Quaternary Stereocenters in Saturated Nitrogen-Containing Heterocycles. Org Lett 2023; 25:6479-6484. [PMID: 37639656 PMCID: PMC10496148 DOI: 10.1021/acs.orglett.3c02064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Indexed: 08/31/2023]
Abstract
Stereogenic nitrogen-containing heterocycles are ubiquitous in natural products and pharmaceutical compounds, but methods for their enantioselective construction have remained elusive. We report a general method for the asymmetric conjugate addition of arylboronic acids to β-alkyl/aryl α,β-unsaturated lactams that affords chiral β,β-disubstituted lactams. The transformation is operationally simple and air- and moisture-tolerant and uses a commercially available (S)-t-Bu-PyOx ligand. The method is high-yielding (up to 95% yield) and enantioselective (up to 97% ee) for a wide range of arylboronic acids and α,β-unsaturated lactams, including those with different ring sizes.
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Affiliation(s)
- Tianyi Zhang
- The Warren and Katharine
Schlinger Laboratory for Chemistry and Chemical Engineering, Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - Yuji Nishiura
- The Warren and Katharine
Schlinger Laboratory for Chemistry and Chemical Engineering, Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - Alexander Q. Cusumano
- The Warren and Katharine
Schlinger Laboratory for Chemistry and Chemical Engineering, Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - Brian M. Stoltz
- The Warren and Katharine
Schlinger Laboratory for Chemistry and Chemical Engineering, Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
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2
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Nishizawa S, Ouchi H, Suzuki H, Ohnishi T, Sasaki S, Oyagi Y, Kanakogi M, Matsumura Y, Nakagawa S, Asakawa T, Egi M, Inai M, Yoshimura F, Takita R, Kan T. Total synthesis of (-)-domoic acid, a potent ionotropic glutamate receptor agonist and the key compound in oceanic harmful algal blooms. Org Biomol Chem 2023; 21:1653-1656. [PMID: 36723220 DOI: 10.1039/d2ob02325c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The stereo-controlled total synthesis of (-)-domoic acid is described. The critical construction of the C1'-C2' Z-configuration was accomplished by taking advantage of an unsaturated lactam structure. The side chain fragment was introduced in the final stages of synthesis through a modified Julia-Kocieński reaction, aiming for its efficient derivatization.
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Affiliation(s)
- Shigeru Nishizawa
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Hitoshi Ouchi
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Hiroto Suzuki
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Takuma Ohnishi
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Shingo Sasaki
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Yu Oyagi
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Masaki Kanakogi
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Yoshitaka Matsumura
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Shunsuke Nakagawa
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Tomohiro Asakawa
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Masahiro Egi
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Makoto Inai
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Fumihiko Yoshimura
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Ryo Takita
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Toshiyuki Kan
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
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Ishida Y, Ouchi H, Kan T, Nagaoka Y. [Simultaneous Analysis of Paralepistopsis acromelalga Applied to Cooked and Processed Foods]. SHOKUHIN EISEIGAKU ZASSHI. JOURNAL OF THE FOOD HYGIENIC SOCIETY OF JAPAN 2023; 64:89-93. [PMID: 37211390 DOI: 10.3358/shokueishi.64.89] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The applicability of a method for simultaneous analysis of Acromelic acids A, B, and Clitidine, which are venomous constituents of Paralepistopsis acromelalga, was assessed for three simulations: tempura, chikuzenni, and soy sauce soup. All components were detectable for all cooking methods. No interfering peak affecting the analysis was observed. The findings indicate that samples of leftover cooked products can be used to ascertain causes of food poisoning by Paralepistopsis acromelalga. Additionally, results showed that most of the toxic components were eluted into the soup broth. This property is useful for rapid screening for Paralepistopsis acromelalga in edible mushrooms.
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Affiliation(s)
| | - Hitoshi Ouchi
- School of Pharmaceutical Sciences, University of Shizuoka
| | - Toshiyuki Kan
- School of Pharmaceutical Sciences, University of Shizuoka
| | - Yuka Nagaoka
- The Yamagata Prefectural Institute of Public Health
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4
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Ishida Y, Ouchi H, Kan T, Shinohara H, Nakajima K, Nagaoka Y. [Isolating Venomous Constituents of Paralepistopsis acromelalgaand Simultaneous Analysis of Its Compounds]. Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi) 2022; 63:79-84. [PMID: 35650032 DOI: 10.3358/shokueishi.63.79] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An isolation method for Acromelic acids A, B and Clitidine, which are venomous constituents of Paralepistopsis acromelalga was developed. Highly purified products were obtained from the mushroom extract using silica gel, ODS, ion-exchange column chromatography and preparative TLC. Using those results, we optimized the LC-MS/MS conditions. Finally we developed a method for simultaneous analysis. In recovery tests, the average recovery was 80.8-112.4%, repeatability was 1.4-3.8RSD%. The limits of quantification of the respective compounds were estimated as 0.25 μg/g. Based on the results, this method can reveal causes of food poisoning by Paralepistopsis acromelalga.
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Affiliation(s)
| | - Hitoshi Ouchi
- School of Pharmaceutical Sciences, University of Shizuoka
| | - Toshiyuki Kan
- School of Pharmaceutical Sciences, University of Shizuoka
| | | | | | - Yuka Nagaoka
- The Yamagata Prefectural Institute of Public Health
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5
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Asakawa T. Memory of Prof. Toshiyuki Kan in Shizuoka. J SYN ORG CHEM JPN 2022. [DOI: 10.5059/yukigoseikyokaishi.80.267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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6
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Taha AG, Elboray EE, Kobayashi Y, Furuta T, Abbas-Temirek HH, Aly MF. Nitro-Substituted Benzaldehydes in the Generation of Azomethine Ylides and Retro-1,3-Dipolar Cycloadditions. J Org Chem 2021; 86:547-558. [PMID: 33283511 DOI: 10.1021/acs.joc.0c02241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
1,3-Dipolar cycloaddition of 2- and 3-nitrobenzaldehydes with 2-aminomethylpyridine and ethyl (2E)-2-cyano-3-(4-nitrophenyl)prop-2-enoate yielded endo-cycloadducts as the sole products under various reaction conditions. Fortuitously, 4-nitrobenzaldehyde behaved differently in three- and four-component cascades to produce a mixture of endo- and exo'-cycloadducts. This reaction is solvent- and temperature-dependent, and consequently, both the endo- and exo'-cycloadducts were synthesized in an excellent regio-, stereo-, and chemoselective fashion. Retro-1,3-dipolar cycloadditions of the endo-cycloadducts were conducted under mild reaction conditions, and the generated syn-dipoles were stereomutated into anti-dipoles which recycloadded with the dipolarophiles to provide the exo'-cycloadducts. Mechanistic studies were carried out to support the proposed mechanisms. Unprecedentedly, particular arylidene scaffolds participated as aldehyde or activated methylene precursors. Density functional theory calculations were performed to shed light on the importance of AcOH in the generation and isomerization of dipoles and to explain the high selectivity and the possibility of retro-cycloaddition.
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Affiliation(s)
- Ahmed G Taha
- Department of Chemistry, Faculty of Science, South Valley University, Qena 83523, Egypt
| | - Elghareeb E Elboray
- Department of Chemistry, Faculty of Science, South Valley University, Qena 83523, Egypt.,Department of Pharmaceutical Chemistry, Kyoto Pharmaceutical University, Yamashina-ku, Kyoto 607-8414, Japan
| | - Yusuke Kobayashi
- Department of Pharmaceutical Chemistry, Kyoto Pharmaceutical University, Yamashina-ku, Kyoto 607-8414, Japan
| | - Takumi Furuta
- Department of Pharmaceutical Chemistry, Kyoto Pharmaceutical University, Yamashina-ku, Kyoto 607-8414, Japan
| | | | - Moustafa F Aly
- Department of Chemistry, Faculty of Science, South Valley University, Qena 83523, Egypt
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Fedoseev SV, Lipin KV, Belikov MY, Tafeenko VA. Synthesis of 4-Halo-3-isopropoxyfuro[3,4-с]-pyridin-1(3H)-ones. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1070428019110046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Zlotin SG, Dalinger IL, Makhova NN, Tartakovsky VA. Nitro compounds as the core structures of promising energetic materials and versatile reagents for organic synthesis. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4908] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This review addresses some promising areas of chemistry of nitro compounds extensively developed in recent years in Russia (particularly at the N.D.Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences) and worldwide. The most important results in the synthesis of novel energetic N-, C- and O-nitro compounds are summarized. New environmentally friendly approaches to the preparation of known compounds of this series, used as components of energetic compositions, are considered. Methods for selective transformations of various nitro compounds to valuable products of organic synthesis, primarily biologically active products and their precursors, are systematically analyzed.
The bibliography includes 446 references.
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9
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Echave H, Bastida I, López R, Palomo C. Bifunctional Brønsted Base Catalyzed Mannich Reaction of β‐Alkoxy α‐Keto Amides: Stereocontrolled Entry to Functionalized Amino Diols. Chemistry 2018; 24:11554-11558. [DOI: 10.1002/chem.201802550] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 06/18/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Haizea Echave
- Departamento de Química Orgánica I, Facultad de QuímicaUniversidad del País Vasco Manuel de Lardizabal 3 20018 San Sebastián Spain
| | - Iñaki Bastida
- Departamento de Química Orgánica I, Facultad de QuímicaUniversidad del País Vasco Manuel de Lardizabal 3 20018 San Sebastián Spain
| | - Rosa López
- Departamento de Química Orgánica I, Facultad de QuímicaUniversidad del País Vasco Manuel de Lardizabal 3 20018 San Sebastián Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Facultad de QuímicaUniversidad del País Vasco Manuel de Lardizabal 3 20018 San Sebastián Spain
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Prakasham A, Gangwar MK, Ghosh P. Michael addition of cyclic β-oxo ester and α-methyl cyano ester substrates with activated olefins by iron complexes of benzimidazole derived N -heterocyclic carbene ligands. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.01.061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Lei H, Xin S, Qiu Y, Zhang X. Enantioselective total synthesis of (-)-kainic acid and (+)-acromelic acid C via Rh(i)-catalyzed asymmetric enyne cycloisomerization. Chem Commun (Camb) 2018; 54:727-730. [PMID: 29214245 DOI: 10.1039/c7cc07967b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A diversity-oriented synthetic strategy was developed for the total synthesis of kainoid amino acids, which led to the enantioselective synthesis of (-)-kainic acid and the first total synthesis of (+)-acromelic acid C. Rh(i)-catalyzed asymmetric enyne cycloisomerization served as the key reaction in this strategy for the rapid construction of highly functionalized lactam, and the resulting vinyl acetate moiety was further utilized as a versatile building block for the installation of both isopropylidene and 2-pyridone units existing in natural kainoids.
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Affiliation(s)
- Honghui Lei
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
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12
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YOSHIOKA N, OUCHI H, KAN T, YOSHIDA M, NOMURA M. Rapid LC-MS Determination of Acromelic Acids A and B, Toxic Constituents of the Mushroom Paralepistopsis acromelalga. Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi) 2017; 58:241-245. [DOI: 10.3358/shokueishi.58.241] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Naoki YOSHIOKA
- Hyogo Prefectural Institute of Public Health and Consumer Sciences
| | - Hitoshi OUCHI
- School of Pharmaceutical Sciences, University of Shizuoka
| | - Toshiyuki KAN
- School of Pharmaceutical Sciences, University of Shizuoka
| | - Masashi YOSHIDA
- Hyogo Prefectural Institute of Public Health and Consumer Sciences
| | - Motoyuki NOMURA
- Hyogo Prefectural Institute of Public Health and Consumer Sciences
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13
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Hui C, Pu F, Xu J. Metal-Catalyzed Asymmetric Michael Addition in Natural Product Synthesis. Chemistry 2016; 23:4023-4036. [DOI: 10.1002/chem.201604110] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Chunngai Hui
- Department of Chemistry; South University of Science and Technology of China; No. 1088 Xueyuan Ave., Nanshan District Shenzhen, Guangdong 518055 P. R. China
| | - Fan Pu
- Department of Chemistry; South University of Science and Technology of China; No. 1088 Xueyuan Ave., Nanshan District Shenzhen, Guangdong 518055 P. R. China
| | - Jing Xu
- Department of Chemistry; South University of Science and Technology of China; No. 1088 Xueyuan Ave., Nanshan District Shenzhen, Guangdong 518055 P. R. China
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14
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Stereoselective reactions of nitro compounds in the synthesis of natural compound analogs and active pharmaceutical ingredients. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.067] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Rajkumar V, Babu SA, Padmavathi R. Regio- and diastereoselective construction of a new set of functionalized pyrrolidine, spiropyrrolidine and spiropyrrolizidine scaffolds appended with aryl- and heteroaryl moieties via the azomethine ylide cycloadditions. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Inai M, Ouchi H, Asahina A, Asakawa T, Hamashima Y, Kan T. Practical Total Syntheses of Acromelic Acids A and B. Chem Pharm Bull (Tokyo) 2016; 64:723-32. [DOI: 10.1248/cpb.c16-00009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Makoto Inai
- School of Pharmaceutical Sciences, University of Shizuoka
| | - Hitoshi Ouchi
- School of Pharmaceutical Sciences, University of Shizuoka
| | - Aya Asahina
- School of Pharmaceutical Sciences, University of Shizuoka
| | | | | | - Toshiyuki Kan
- School of Pharmaceutical Sciences, University of Shizuoka
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Pellissier H. Recent Developments in Enantioselective Nickel(II)-Catalyzed Conjugate Additions. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500512] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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18
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Barker G, Webster S, Johnson DG, Curley R, Andrews M, Young PC, Macgregor SA, Lee AL. Gold-Catalyzed Proto- and Deuterodeboronation. J Org Chem 2015; 80:9807-16. [PMID: 26118859 DOI: 10.1021/acs.joc.5b01041] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A mild gold-catalyzed protodeboronation reaction, which does not require acid or base additives and can be carried out in "green" solvents, is described. As a result, the reaction is very functional-group-tolerant, even to acid- and base-sensitive functional groups, and should allow for the boronic acid group to be used as an effective traceless directing or blocking group. The reaction has also been extended to deuterodeboronations for regiospecific ipso-deuterations of aryls and heteroaryls from the corresponding organoboronic acid. Based on density functional theory calculations, a mechanism is proposed that involves nucleophilic attack of water at boron followed by rate-limiting B-C bond cleavage and facile protonolysis of a Au-σ-phenyl intermediate.
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Affiliation(s)
- Graeme Barker
- Institute of Chemical Sciences, Heriot-Watt University , Edinburgh, EH14 4AS United Kingdom
| | - Stacey Webster
- Institute of Chemical Sciences, Heriot-Watt University , Edinburgh, EH14 4AS United Kingdom
| | - David G Johnson
- Institute of Chemical Sciences, Heriot-Watt University , Edinburgh, EH14 4AS United Kingdom
| | - Rachel Curley
- Institute of Chemical Sciences, Heriot-Watt University , Edinburgh, EH14 4AS United Kingdom
| | - Matthew Andrews
- Institute of Chemical Sciences, Heriot-Watt University , Edinburgh, EH14 4AS United Kingdom
| | - Paul C Young
- Institute of Chemical Sciences, Heriot-Watt University , Edinburgh, EH14 4AS United Kingdom
| | - Stuart A Macgregor
- Institute of Chemical Sciences, Heriot-Watt University , Edinburgh, EH14 4AS United Kingdom
| | - Ai-Lan Lee
- Institute of Chemical Sciences, Heriot-Watt University , Edinburgh, EH14 4AS United Kingdom
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Eftekhari-Sis B, Zirak M. Chemistry of α-oxoesters: a powerful tool for the synthesis of heterocycles. Chem Rev 2014; 115:151-264. [PMID: 25423283 DOI: 10.1021/cr5004216] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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