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Müller C, Scholten K, Engelage E, Merten C. Synthesis and VCD Spectroscopic Characterization of a Series of Azacryptands from a Chiral Valine-Based Derivative of Tris(2-aminoethyl)amine (TREN). Chemistry 2023; 29:e202302126. [PMID: 37556200 DOI: 10.1002/chem.202302126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/09/2023] [Accepted: 08/09/2023] [Indexed: 08/10/2023]
Abstract
Utilizing experimental and computational vibrational circular dichroism (VCD) spectroscopy, we explored the conformational preferences of a series of chiral C3 -symmetric octaazacryptands with tris(2-aminoethyl)-amine head groups derived from valine. While the spectra of the smallest azacryptand with p-phenyl linkers and its elongated derivative with p-biphenyls linker were found to match well with the computed spectra, the computed conformational preferences of the m-biphenyl-based azacryptand did not seem to reflect the conformations dominating in chloroform solution. A detailed analysis revealed that structural changes resulting in a collapsed cage structure gave a notably better match with the experiment. It could subsequently be concluded from the VCD analysis, that the octaazacryptands prefer a collapsed structure, which is not predicted by density functional theory (DFT) calculations as the global minimum structures. These findings are expected to have consequences also for future studies on inclusion complexes of such azacryptands.
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Affiliation(s)
- Clemens Müller
- Ruhr Universität Bochum, Fakultät für Chemie und Biochemie, Organische Chemie II, Universitätsstraße 150, 44801, Bochum, Germany
| | - Kevin Scholten
- Ruhr Universität Bochum, Fakultät für Chemie und Biochemie, Organische Chemie II, Universitätsstraße 150, 44801, Bochum, Germany
| | - Elric Engelage
- Ruhr Universität Bochum, Fakultät für Chemie und Biochemie, Organische Chemie II, Universitätsstraße 150, 44801, Bochum, Germany
| | - Christian Merten
- Ruhr Universität Bochum, Fakultät für Chemie und Biochemie, Organische Chemie II, Universitätsstraße 150, 44801, Bochum, Germany
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2
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Afanasyev OI, Kuchuk EA, Muratov KM, Denisov GL, Chusov D. Symmetrical Tertiary Amines: Applications and Synthetic Approaches. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001171] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Oleg I. Afanasyev
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 Moscow 119991 Russian Federation
| | - Ekaterina A. Kuchuk
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 Moscow 119991 Russian Federation
| | - Karim M. Muratov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 Moscow 119991 Russian Federation
| | - Gleb L. Denisov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 Moscow 119991 Russian Federation
| | - Denis Chusov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 Moscow 119991 Russian Federation
- National Research University Higher School of Economics Miasnitskaya Str. 20 Moscow 101000 Russian Federation
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3
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Rossi E, Abbiati G, Dell'Acqua M, Negrato M, Paganoni A, Pirovano V. Exploiting the σ-phylic properties of cationic gold(i) catalysts in the ring opening reactions of aziridines with indoles. Org Biomol Chem 2016; 14:6095-110. [DOI: 10.1039/c6ob00672h] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Gold(i) species catalyze the ring opening reactions of aziridines with indoles as nucleophiles for the synthesis of tryptamines and pyrroloindolines.
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Affiliation(s)
- Elisabetta Rossi
- Dipartimento di Scienze Farmaceutiche – Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 21 – 20133 Milano
- Italy
| | - Giorgio Abbiati
- Dipartimento di Scienze Farmaceutiche – Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 21 – 20133 Milano
- Italy
| | - Monica Dell'Acqua
- Dipartimento di Scienze Farmaceutiche – Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 21 – 20133 Milano
- Italy
| | - Marco Negrato
- Dipartimento di Scienze Farmaceutiche – Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 21 – 20133 Milano
- Italy
| | - Andrea Paganoni
- Dipartimento di Scienze Farmaceutiche – Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 21 – 20133 Milano
- Italy
| | - Valentina Pirovano
- Dipartimento di Scienze Farmaceutiche – Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 21 – 20133 Milano
- Italy
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Callebaut G, Mangelinckx S, Kiss L, Sillanpää R, Fülöp F, De Kimpe N. Asymmetric synthesis of α,β-diamino acid derivatives with an aziridine-, azetidine- and γ-lactone-skeleton via Mannich-type additions across α-chloro-N-sulfinylimines. Org Biomol Chem 2012; 10:2326-38. [DOI: 10.1039/c2ob06637h] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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5
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Fan YC, Kwon O. Diversity-oriented synthesis based on the DPPP-catalyzed mixed double-Michael reactions of electron-deficient acetylenes and β-amino alcohols. Molecules 2011; 16:3802-25. [PMID: 21546881 PMCID: PMC4126835 DOI: 10.3390/molecules16053802] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Revised: 04/29/2011] [Accepted: 05/05/2011] [Indexed: 11/30/2022] Open
Abstract
In this study, we prepared oxizolidines through 1,3-bis(diphenylphosphino)-propane (DPPP)–catalyzed mixed double-Michael reactions of β-amino alcohols with electron-deficient acetylenes. These reactions are very suitable for the diversity-oriented parallel syntheses of oxizolidines because: (i) they are performed under mild metal-free conditions and (ii) the products are isolated without complicated work-up. To demonstrate the applicability of mixed double-Michael reactions for the preparation of five-membered-ring heterocycles, we prepared 60 distinct oxazolidines from five β-amino alcohols and 12 electron-deficient acetylenes. We synthesized 36 of these 60 oxazolidines in enantiomerically pure form from proteinogenic amino acid–derived β-amino alcohols.
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Affiliation(s)
| | - Ohyun Kwon
- Author to whom correspondence should be addressed; E-Mail:
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6
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Jin W, Li X, Huang Y, Wu F, Wan B. Corrigendum: A Highly Effective Bis(sulfonamide)-Diamine Ligand: A Unique Chiral Skeleton for the Enantioselective Cu-Catalyzed Henry Reaction. Chemistry 2011. [DOI: 10.1002/chem.201190015] [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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7
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Chandrasekhar S, Mahipal B, Kavitha M. Toward Tubulysin: Gram-Scale Synthesis of Tubuvaline-Tubuphenylalanine Fragment. J Org Chem 2009; 74:9531-4. [DOI: 10.1021/jo9015503] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Srivari Chandrasekhar
- Organic Division-I, Indian Institute of Chemical Technology, Hyderabad 500 607, India
| | - Bodugam Mahipal
- Organic Division-I, Indian Institute of Chemical Technology, Hyderabad 500 607, India
| | - Mitta Kavitha
- Organic Division-I, Indian Institute of Chemical Technology, Hyderabad 500 607, India
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9
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Seitz M, Do K, Ingram AJ, Moore EG, Muller G, Raymond KN. Circularly polarized luminescence in enantiopure europium and terbium complexes with modular, all-oxygen donor ligands. Inorg Chem 2009; 48:8469-79. [PMID: 19639983 PMCID: PMC2735592 DOI: 10.1021/ic901079s] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The modular syntheses of three new octadentate, enantiopure ligands are reported, one with the bidentate chelating unit 2-hydroxyisophthalamide (IAM) and two with bidentate 1-hydroxy-2-pyridinone (1,2-HOPO) units. A new design principle is introduced for the chiral, non-racemic hexamines which constitute the central backbones for the presented class of ligands. The terbium(III) complex of the IAM ligand, as well as the europium(III) complexes of the 1,2-HOPO ligands, are synthesized and characterized by various techniques (NMR, UV, CD, luminescence spectroscopy). All species exhibit excellent stability and moderate to high luminescence efficiency (quantum yields Phi(Eu) = 0.05-0.08 and Phi(Tb) = 0.30-0.57) in aqueous solution at physiological pH. Special focus is put onto the properties of the complexes in regard to circularly polarized luminescence (CPL). The maximum luminescence dissymmetry factors (g(lum)) in aqueous solution are high with |g(lum)|(max) = 0.08-0.40. Together with the very favorable general properties (good stability, high quantum yields, long lifetimes), the presented lanthanide complexes can be considered as good candidates for analytical probes based on CPL in biologically relevant environments.
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Affiliation(s)
- Michael Seitz
- Department of Chemistry, University of California, Berkeley, CA 94720-1460, USA
| | - King Do
- Department of Chemistry, San José State University, San José, CA 95192-0101, USA
| | - Andrew J. Ingram
- Department of Chemistry, San José State University, San José, CA 95192-0101, USA
| | - Evan G. Moore
- Department of Chemistry, University of California, Berkeley, CA 94720-1460, USA
| | - Gilles Muller
- Department of Chemistry, San José State University, San José, CA 95192-0101, USA
| | - Kenneth N. Raymond
- Department of Chemistry, University of California, Berkeley, CA 94720-1460, USA
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Synthesis and biological evaluation of reversible inhibitors of IdeS, a bacterial cysteine protease and virulence determinant. Bioorg Med Chem 2009; 17:3463-70. [PMID: 19362485 DOI: 10.1016/j.bmc.2009.03.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2008] [Revised: 01/23/2009] [Accepted: 03/13/2009] [Indexed: 12/30/2022]
Abstract
Analogues of the irreversible protease inhibitors TPCK and TLCK have been synthesized and tested as inhibitors of the bacterial cysteine protease IdeS excreted by Streptococcuspyogenes. Eight compounds were identified as inhibitors of IdeS in an in vitro assay. The most potent compounds contained an aldehyde function, thus acting as efficient reversible inhibitors, nitrile and azide derivatives showed moderate activity.
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Albrecht M, Burk S, Stoffel R, Lüchow A, Fröhlich R, Kogej M, Schalley CA. Protonation of Tris(iminocatecholato) Complexes of Gallium(III) and Titanium(IV). Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200601206] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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12
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Forcato M, Lake F, Mba Blazquez M, Renner P, Crisma M, Gade LH, Licini G, Moberg C. Chiral, Enantiopure Aluminum(III) and Titanium(IV) Azatranes. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200500657] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Pei Y, Brulé E, Moberg C. Modular multidentate phosphine ligands: application to palladium-catalyzed allylic alkylations. Org Biomol Chem 2006; 4:544-50. [PMID: 16446813 DOI: 10.1039/b513906f] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multidentate phosphines were readily obtained by reaction of chiral multidentate amines, prepared via ring opening of (S)-N-tosyl-2-isopropylaziridine with ammonia, primary, and secondary amines, with achiral phosphorus containing building blocks. The phosphines were used in palladium-catalyzed alkylation of rac-3-cyclohexenyl and cyclopentenyl carbonates. The enantioselectivity and reactivity were largely dependent on the structure of the amine core of the ligands. Up to 88% ee was observed in reactions with the six-membered substrate.
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Affiliation(s)
- Yuxin Pei
- Department of Chemistry, Organic Chemistry, Royal Institute of Technology, SE 100 44, Stockholm, Sweden
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