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Patil AR, Marelli UK. Integrating 3,4-Dihydro-2 H-1,4-oxazine into Peptides as a Modification: Silver Triflate-Catalyzed Cyclization of N-Propargyl N-Sulfonyl Amino Alcohols for SPPS Applications. Org Lett 2024; 26:7584-7589. [PMID: 39225658 DOI: 10.1021/acs.orglett.4c02654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
We present a methodology yielding 3,4-dihydro-2H-1,4-oxazine by cyclization of N-propargyl N-sulfonyl amino alcohols using silver triflate as a catalyst at ambient temperature. Additionally, we showcase the applicability of this methodology in solid phase peptide synthesis (SPPS) to introduce the oxazine heterocyclic ring into short peptides containing serine and threonine. Notably, Rink amide resin supported the on-resin formation of 3,4-dihydro-2H-1,4-oxazine, while 2-CTC resin facilitated the oxazine formation in a one-pot process involving peptide cleavage, deprotection, and subsequent C-O ring formation, thus offering a versatile method for the late-stage modification of peptides.
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Affiliation(s)
- Abhijit Ramchandra Patil
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
- Central NMR Facility, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Sector 19, Kamla Nehru Nagar, Ghaziabad, UP 201002, India
| | - Udaya Kiran Marelli
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
- Central NMR Facility, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Sector 19, Kamla Nehru Nagar, Ghaziabad, UP 201002, India
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Yang D, Wang C, Wang Y, Liu G, Cheng T, Liu R. One-pot enantioselective construction of 3,4-dihydro-2H-1,4-oxazines over Ru/Au relay catalysis and its mechanistic serendipity. Org Chem Front 2022. [DOI: 10.1039/d1qo01482j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One-pot enantioselective construction of 3,4-dihydro-2H-1,4-oxazines have been developed through the transfer hydrogenation/cyclization enantio-relay process using Ru and Au bimetallic catalysts.
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Affiliation(s)
- Dongfeng Yang
- Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Key Laboratory of Resource Chemistry of Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China
| | - Chengyi Wang
- Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Key Laboratory of Resource Chemistry of Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China
| | - Yu Wang
- Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Key Laboratory of Resource Chemistry of Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China
| | - Guohua Liu
- Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Key Laboratory of Resource Chemistry of Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China
| | - Tanyu Cheng
- Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Key Laboratory of Resource Chemistry of Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China
| | - Rui Liu
- Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Key Laboratory of Resource Chemistry of Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China
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3
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New chiral morpholine-pyrrolidine ligands affecting asymmetric selectivity in copper catalyzed Henry reaction. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.01.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Borah M, Borthakur U, Saikia AK. Diastereoselective Synthesis of Substituted Morpholines from N-Tethered Alkenols: Total Synthesis of (±)-Chelonin A. J Org Chem 2017; 82:1330-1339. [DOI: 10.1021/acs.joc.6b02260] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Madhurjya Borah
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Upasana Borthakur
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Anil K. Saikia
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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Ghosh P, Deka MJ, Saikia AK. Lewis acid mediated intramolecular C–O bond formation of alkanol-epoxide leading to substituted morpholine and 1,4-oxazepane derivatives: total synthesis of (±)–Viloxazine. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.12.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kishore Vandavasi J, Hu WP, Chandru Senadi G, Chen HT, Chen HY, Hsieh KC, Wang JJ. Aryl λ3-Iodane-Mediated 6-exo-trigCyclization to Synthesize Highly Substituted Chiral Morpholines. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500177] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Deka MJ, Indukuri K, Sultana S, Borah M, Saikia AK. Synthesis of Five-, Six-, and Seven-Membered 1,3- and 1,4-Heterocyclic Compounds via Intramolecular Hydroalkoxylation/Hydrothioalkoxylation of Alkenols/Thioalkenols. J Org Chem 2015; 80:4349-59. [DOI: 10.1021/acs.joc.5b00049] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manash J. Deka
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Kiran Indukuri
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Sabera Sultana
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Madhurjya Borah
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Anil K. Saikia
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
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Breuning M, Winnacker M, Steiner M. Efficient One-Pot Synthesis of Enantiomerically Pure 2-(Hydroxymethyl)morpholines. European J Org Chem 2007. [DOI: 10.1002/ejoc.200601006] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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Abstract
In the basal ganglia the effects of gamma-aminobutyrate (GABA) are mediated by both ionotropic (GABA(A)) and metabotropic (GABA(B)) receptors. Although the existence and widespread distribution in the CNS of the GABA(B) receptor had been established in the 1980s the field of GABA(B) research was revolutionized with the discovery that two related G-protein-coupled receptors (GPCRs) needed to dimerize to form the functional GABA(B) receptor at the cell surface. This finding lead to a number of studies of oligomerization in GPCRs and detailed pharmacological studies of the cloned receptors and their splice variants. Particular interest has focused on the proteins interacting with the receptor which may be important in mediating the longer term signalling effects of the receptor and modifying its cellular localization or physiology. The cloning of the GABA(B) receptors also lead to the identification of the first compounds interacting in an allosteric fashion with the receptor some of which may have therapeutic value. Most recently "knockouts" of both the GABA(B) subunits have been produced where in general as expected there is a loss of the majority of the inhibitory effects of the GABA(B) receptor.
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Affiliation(s)
- Piers C Emson
- The Babraham Institute, Babraham Research Campus, Cambridge CB2 4AT, UK.
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Lukáš M, Vojtíšek P, Hermann P, Rohovec J, Lukeš I. SYNTHESIS OF PHOSPHINIC ACID ANALOGUES OF GLYCYL–GLYCINE AND CRYSTAL STRUCTURE OF N-GLYCYL-AMINOMETHYL-(PHENYLPHOSPHINIC) ACID. SYNTHETIC COMMUN 2006. [DOI: 10.1081/scc-120001512] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Michal Lukáš
- a Department of Inorganic Chemistry, Faculty of Sciences, Universita Karlova , Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Pavel Vojtíšek
- a Department of Inorganic Chemistry, Faculty of Sciences, Universita Karlova , Hlavova 2030, 128 40 Prague 2, Czech Republic
| | | | - Jan Rohovec
- a Department of Inorganic Chemistry, Faculty of Sciences, Universita Karlova , Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Ivan Lukeš
- a Department of Inorganic Chemistry, Faculty of Sciences, Universita Karlova , Hlavova 2030, 128 40 Prague 2, Czech Republic
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Ahern DG, Laseter AG, Filer CN. The synthesis and characterization of [2,3-3H] gamma-aminobutyric acid via 4-aminotetrolic acid at high specific activity. Appl Radiat Isot 2003; 58:477-9. [PMID: 12672627 DOI: 10.1016/s0969-8043(03)00032-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Gamma-aminobutyric acid was labelled with tritium by the tritium gas catalytic reduction of a convenient 4-aminotetrolic acid derivative. The purified product was characterized by HPLC and tritium NMR.
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Affiliation(s)
- David G Ahern
- PerkinElmer Life Sciences Inc., 549 Albany St., Boston, MA 02118, USA
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Kubíček V, Vojtíšek P, Rudovský J, Hermann P, Lukeš I. Complexes of divalent transition metal ions with bis(aminomethyl)phosphinic acid in aqueous solution and in the solid state. Dalton Trans 2003. [DOI: 10.1039/b305844a] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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