1
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Tomohara K, Kusaba S, Masui M, Uchida T, Nambu H, Nose T. Ammonium carboxylates in the ammonia-Ugi reaction: one-pot synthesis of α,α-disubstituted amino acid derivatives including unnatural dipeptides. Org Biomol Chem 2024. [PMID: 39118586 DOI: 10.1039/d4ob00924j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
Despite the remarkable developments of the Ugi reaction and its variants, the use of ammonia in the Ugi reaction has long been recognized as impractical and unsuccessful. Indeed, the ammonia-Ugi reaction often requires harsh reaction conditions, such as heating and microwave irradiation, and competes with the Passerini reaction, thereby resulting in low yields. This study describes a robust and practical ammonia-Ugi reaction protocol. Using originally prepared ammonium carboxylates in trifluoroethanol, the ammonia-Ugi reaction proceeded at room temperature in high yields and showed a broad substrate scope, thus synthesizing a variety of α,α-disubstituted amino acid derivatives, including unnatural dipeptides. The reaction required no condensing agents and proceeded without racemization of the chiral stereocenter of α-amino acids. Furthermore, using this protocol, we quickly synthesized a novel dipeptide, D-Leu-Aic-NH-CH2Ph(p-F), which exhibited a potent inhibitory activity against α-chymotrypsin with a Ki value of 0.091 μM.
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Affiliation(s)
- Keisuke Tomohara
- Faculty of Arts and Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
- Faculty and Graduate School of Pharmaceutical Science, Kyoto Pharmaceutical University, 1 Misasagishichono-cho, Yamashina-ku, Kyoto 607-8412, Japan.
| | - Satoru Kusaba
- Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
| | - Mana Masui
- Faculty and Graduate School of Pharmaceutical Science, Kyoto Pharmaceutical University, 1 Misasagishichono-cho, Yamashina-ku, Kyoto 607-8412, Japan.
| | - Tatsuya Uchida
- Faculty of Arts and Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
- Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
- International Institute for Carbon-Neutral Energy Research, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Hisanori Nambu
- Faculty and Graduate School of Pharmaceutical Science, Kyoto Pharmaceutical University, 1 Misasagishichono-cho, Yamashina-ku, Kyoto 607-8412, Japan.
| | - Takeru Nose
- Faculty of Arts and Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
- Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
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2
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Wahby Y, Abdel-Hamid H, Ayoup MS. Two decades of recent advances of Passerini reactions: synthetic and potential pharmaceutical applications. NEW J CHEM 2022. [DOI: 10.1039/d1nj03832j] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This perspective describes the applications of Passerini reactions in the last two decades from 2000 to 2021 in pharmaceutical applications and synthesis of peptides, natural products, macrocycles, dendrimers, and versatile types of heterocycles.
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Affiliation(s)
- Yasmin Wahby
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, 21321, Egypt
| | - Hamida Abdel-Hamid
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, 21321, Egypt
| | - Mohammed Salah Ayoup
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, 21321, Egypt
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3
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Shou JY, Xu XH, Qing FL. Chemoselective Hydro(Chloro)pentafluorosulfanylation of Diazo Compounds with Pentafluorosulfanyl Chloride. Angew Chem Int Ed Engl 2021; 60:15271-15275. [PMID: 33928731 DOI: 10.1002/anie.202103606] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/26/2021] [Indexed: 11/09/2022]
Abstract
Pentafluorosulfanyl chloride (SF5 Cl) is the most prevalent reagent for the incorporation of SF5 group into organic compounds. However, the preparation of SF5 Cl often relies on hazardous reagents and specialized apparatus. Herein, we described a safe and practical synthesis of a bench-stable and easy-to-handle solution of SF5 Cl in n-hexane under gas-reagent-free conditions. The synthetic application of SF5 Cl was demonstrated through the unprecedented reaction with diazo compounds. The chemoselective hydro- and chloropentafluorosulfanylations of α-diazo carbonyl compounds were developed in the presence of K3 PO4 or copper catalyst, respectively. These reactions provide a direct and efficient access to various α-pentafluorosulfanyl carbonyl compounds of high value for potential applications.
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Affiliation(s)
- Jia-Yi Shou
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Xiu-Hua Xu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Feng-Ling Qing
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
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4
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Shou J, Xu X, Qing F. Chemoselective Hydro(Chloro)pentafluorosulfanylation of Diazo Compounds with Pentafluorosulfanyl Chloride. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103606] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jia‐Yi Shou
- Key Laboratory of Organofluorine Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Science Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Xiu‐Hua Xu
- Key Laboratory of Organofluorine Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Science Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Feng‐Ling Qing
- Key Laboratory of Organofluorine Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Science Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
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Abstract
AbstractLactams are very important heterocycles as a result of their presence in a wide range of bioactive molecules, natural products and drugs, and also due their utility as versatile synthetic intermediates. Due to these reasons, numerous efforts have focused on the development of effective and efficient methods for their synthesis. Compared to conventional two-component reactions, multicomponent reactions (MCRs), particularly isocyanide-based MCRs, are widely used for the synthesis of a range of small heterocycles including lactam analogues. Despite their numerous applications in almost every field of chemistry, as yet there is no dedicated review on isocyanide-based multicomponent reactions (IMCRs) concerning the synthesis of lactams. Therefore, this review presents strategies towards the synthesis of α-, β-, γ-, δ- and ε-lactams using IMCRs or IMCRs/post-transformation reactions reported in the literature between 2000 and 2020.1 Introduction2 Developments in Lactam Synthesis2.1 α-Lactams2.2 β-Lactams2.3 γ-Lactams2.3.1 General γ-Lactams2.3.2 Benzo-Fused γ-Lactams2.3.3 Spiro γ-Lactams2.3.4 α,β-Unsaturated γ-Lactams2.3.5 Polycyclic Fused γ-Lactams2.4 δ-Lactams2.5 ε-Lactams3 Conclusions
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6
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Fjellaksel R, Oteiza A, Martin-Armas M, Riss PJ, Hjelstuen OK, Kuttner S, Hansen JH, Sundset R. First in vivo evaluation of a potential SPECT brain radiotracer for the gonadotropin releasing hormone receptor. BMC Res Notes 2018; 11:811. [PMID: 30442192 PMCID: PMC6238273 DOI: 10.1186/s13104-018-3924-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 11/09/2018] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVES In vivo evaluations of a gonadotropin releasing hormone-receptor single photon emission computed tomography radiotracer for non-invasive detection of gonadotropin releasing homone-receptors in brain. RESULTS We have used a simple, robust and high-yielding procedure to radiolabel an alpha-halogenated bioactive compound with high radiochemical yield. Literature findings showed similar alpha-halogenated compounds suitable for in vivo evaluations. The compound was found to possess nano molar affinity for the gonadotropin releasing hormone-receptor in a competition dependent inhibition study. Furthermore, liquid chromatography-mass spectrometry analysis in saline, human and rat serum resulted in 46%, 52% and 44% stability after incubation for 1 h respectively. In addition, rat brain single photon emission computed tomography and biodistribution studies gave further insight into the nature of the compound as a radiotracer.
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Affiliation(s)
- Richard Fjellaksel
- Medical Imaging Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- Drug Transport and Delivery Research Group, Department of Pharmacy, UiT The Arctic University of Norway, Tromsø, Norway
- Organic Chemistry Research Group, Department of Chemistry, UiT The Arctic University of Norway, Tromsø, Norway
- The PET Imaging Center, University Hospital of North Norway, Tromsø, Norway
| | - Ana Oteiza
- Medical Imaging Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- The PET Imaging Center, University Hospital of North Norway, Tromsø, Norway
| | - Montserrat Martin-Armas
- Medical Imaging Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- The PET Imaging Center, University Hospital of North Norway, Tromsø, Norway
| | - Patrick J. Riss
- Department of Neuropsychiatry and Psychosomatic Medicine, Oslo University Hospital, Oslo, Norway
- Realomics SFI, Department of Chemistry, University of Oslo, Oslo, Norway
- Norsk Medisinsk Syklotronsenter AS, Postboks 4950, Nydalen, Oslo, Norway
| | - Ole Kristian Hjelstuen
- Drug Transport and Delivery Research Group, Department of Pharmacy, UiT The Arctic University of Norway, Tromsø, Norway
| | - Samuel Kuttner
- Medical Imaging Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- The PET Imaging Center, University Hospital of North Norway, Tromsø, Norway
| | - Jørn H. Hansen
- Organic Chemistry Research Group, Department of Chemistry, UiT The Arctic University of Norway, Tromsø, Norway
| | - Rune Sundset
- Medical Imaging Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- The PET Imaging Center, University Hospital of North Norway, Tromsø, Norway
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7
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Microwave-assisted facile construction of quinoxalinone and benzimidazopyrazinone derivatives via two paths of post-Ugi cascade reaction. Mol Divers 2018; 23:137-145. [PMID: 30073609 DOI: 10.1007/s11030-018-9855-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 06/25/2018] [Indexed: 10/28/2022]
Abstract
A facile and efficient route to synthesize quinoxalinone and benzimidazopyrazinone was developed via two paths of a post-Ugi cascade reaction. By simply alternating the order of nucleophilic substitution reactions, both heterocycles could be accessed selectively from the same Ugi adduct. Microwave-assisted synthesis protocol provided these compounds with one purification procedure for three steps. These two scaffolds with more possible spaces for further modifications provide great benefit toward combinatorial and medicinal chemistry campaigns.
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8
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Zhang J, Wu YH, Wang JC, Du FS, Li ZC. Functional Poly(ester–amide)s with Tertiary Ester Linkages via the Passerini Multicomponent Polymerization of a Dicarboxylic Acid and a Diisocyanide with Different Electron-Deficient Ketones. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01168] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jian Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering, Peking University, Beijing 100871, China
| | - Yu-Huan Wu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering, Peking University, Beijing 100871, China
| | - Jia-Chen Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering, Peking University, Beijing 100871, China
| | - Fu-Sheng Du
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering, Peking University, Beijing 100871, China
| | - Zi-Chen Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering, Peking University, Beijing 100871, China
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9
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Richter C, Nguyen Trung M, Mahrwald R. Multicomponent Cascade Reactions of Unprotected Ketoses and Amino Acids--Access to a Defined Configured Quaternary Stereogenic Center. J Org Chem 2015; 80:10849-65. [PMID: 26451463 DOI: 10.1021/acs.joc.5b02003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A highly stereoselective multicomponent cascade reaction of ketones with unprotected amino acids was developed. This operationally simple methodology was expanded to reactions of unprotected ketohexoses and unprotected amino acids. By the careful choice of amino acid and isonitrile, an optional access to all possible enantiomers is given.
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Affiliation(s)
- Celin Richter
- Institute of Chemistry, Humboldt University Berlin , Brook-Taylor Str. 2, 12484 Berlin, Germany
| | - Minh Nguyen Trung
- Institute of Chemistry, Humboldt University Berlin , Brook-Taylor Str. 2, 12484 Berlin, Germany
| | - Rainer Mahrwald
- Institute of Chemistry, Humboldt University Berlin , Brook-Taylor Str. 2, 12484 Berlin, Germany
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10
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Abstract
Star-branched molecular architectures lend themselves to convergent synthesis strategies for creating materials that combine three or more functional modalities, but these approaches require a core moiety with several reactive groups that are orthogonal to one another. The direct synthesis of three-arm, star-branched mesogens has been investigated via the Passerini three-component reaction to demonstrate how multicomponent reactions circumvent the need to identify and synthesize specialized branched core molecules.
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Affiliation(s)
- Shuang Song
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Jonathan G Rudick
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
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11
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Lin Z, Li J, Huang Q, Huang Q, Wang Q, Tang L, Gong D, Yang J, Zhu J, Deng J. Chiral surfactant-type catalyst: enantioselective reduction of long-chain aliphatic ketoesters in water. J Org Chem 2015; 80:4419-29. [PMID: 25830366 DOI: 10.1021/acs.joc.5b00241] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A series of amphiphilic ligands were designed and synthesized. The rhodium complexes with the ligands were applied to the asymmetric transfer hydrogenation of broad range of long-chained aliphatic ketoesters in neat water. Quantitative conversion and excellent enantioselectivity (up to 99% ee) was observed for α-, β-, γ-, δ- and ε-ketoesters as well as for α- and β-acyloxyketone using chiral surfactant-type catalyst 2. The CH/π interaction and the strong hydrophobic interaction of long aliphatic chains between the catalyst and the substrate in the metallomicelle core played a key role in the catalytic transition state. Synergistic effects between the metal-catalyzed site and the hydrophobic microenvironment of the core in the micelle contributed to high stereoselectivity.
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Affiliation(s)
- Zechao Lin
- †Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China.,§Graduate University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiahong Li
- †Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China.,§Graduate University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qingfei Huang
- †Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Qiuya Huang
- †Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Qiwei Wang
- †Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Lei Tang
- #Laboratory of Anesthesia and Critical Care Medicine, Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Deying Gong
- #Laboratory of Anesthesia and Critical Care Medicine, Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jun Yang
- #Laboratory of Anesthesia and Critical Care Medicine, Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jin Zhu
- †Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Jingen Deng
- †Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China.,‡Key Laboratory of Drug-Targeting of Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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12
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Jee JA, Song S, Rudick JG. Enhanced reactivity of dendrons in the Passerini three-component reaction. Chem Commun (Camb) 2015; 51:5456-9. [DOI: 10.1039/c4cc10091c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unexpected substituent effect that accelerates Passerini reactions in THF has enabled the synthesis of three generations of dendrimers.
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Affiliation(s)
- Jo-Ann Jee
- Department of Chemistry
- Stony Brook University
- Stony Brook
- USA
| | - Shuang Song
- Department of Chemistry
- Stony Brook University
- Stony Brook
- USA
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13
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Discovery and SAR studies of a novel class of cytotoxic 1,4-disubstituted piperidines via Ugi reaction. Eur J Med Chem 2014; 83:174-89. [DOI: 10.1016/j.ejmech.2014.06.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 06/04/2014] [Accepted: 06/12/2014] [Indexed: 11/24/2022]
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14
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Synthesis of quaternary α-amino acid-based arginase inhibitors via the Ugi reaction. Bioorg Med Chem Lett 2013; 23:4837-41. [DOI: 10.1016/j.bmcl.2013.06.092] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2013] [Revised: 06/22/2013] [Accepted: 06/27/2013] [Indexed: 01/17/2023]
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15
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Markitanov YM, Timoshenko VM, Shermolovich YG. β-Keto sulfones: preparation and application in organic synthesis. J Sulphur Chem 2013. [DOI: 10.1080/17415993.2013.815749] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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16
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New efficient synthesis of 2,3,4-trisubstituted 3,4-dihydroquinazolines by a Ugi 4CC/Staudinger/aza-Wittig sequence. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.03.056] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Gordon CP, Young KA, Robertson MJ, Hill TA, McCluskey A. An Ugi-intramolecular Diels–Alder route to highly substituted tetrahydroepoxyisoindole carboxamides. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.10.042] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Gordon CP, Young KA, Hizartzidis L, Deane FM, McCluskey A. Investigation of the one-pot synthesis of quinolin-2-(1H)-ones and the discovery of a variation of the three-component Ugi reaction. Org Biomol Chem 2011; 9:1419-28. [DOI: 10.1039/c0ob00029a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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De Moliner F, Crosignani S, Banfi L, Riva R, Basso A. Synthesis of 5-Carboxamide-oxazolines with a Passerini−Zhu/Staudinger−Aza−Wittig Two-Step Protocol. ACTA ACUST UNITED AC 2010; 12:613-6. [DOI: 10.1021/cc100122n] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fabio De Moliner
- Università degli Studi di Genova, Dipartimento di Chimica e Chimica Industriale, Genova, Italy, and Merck Serono S. A., Geneva, Switzerland
| | - Stefano Crosignani
- Università degli Studi di Genova, Dipartimento di Chimica e Chimica Industriale, Genova, Italy, and Merck Serono S. A., Geneva, Switzerland
| | - Luca Banfi
- Università degli Studi di Genova, Dipartimento di Chimica e Chimica Industriale, Genova, Italy, and Merck Serono S. A., Geneva, Switzerland
| | - Renata Riva
- Università degli Studi di Genova, Dipartimento di Chimica e Chimica Industriale, Genova, Italy, and Merck Serono S. A., Geneva, Switzerland
| | - Andrea Basso
- Università degli Studi di Genova, Dipartimento di Chimica e Chimica Industriale, Genova, Italy, and Merck Serono S. A., Geneva, Switzerland
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20
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He P, Wu J, Nie YB, Ding MW. Unexpected Synthesis of Rearranged 3,4-Dihydroquinazolines by a Sequential Ugi 4CC/Aza-Wittig/Carbodiimide-Mediated Cyclization. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901287] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Banfi L, Basso A, Riva R. Synthesis of Heterocycles Through Classical Ugi and Passerini Reactions Followed by Secondary Transformations Involving One or Two Additional Functional Groups. SYNTHESIS OF HETEROCYCLES VIA MULTICOMPONENT REACTIONS I 2010. [DOI: 10.1007/7081_2009_23] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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22
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He P, Wu J, Nie YB, Ding MW. New efficient synthesis of 4-aminocarbonyl substituted 4H-3,1-benzoxazines by a Passerini 3CC/Staudinger/aza-Wittig sequence. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.08.022] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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