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A microwave-assisted multicomponent synthesis of substituted 3,4-dihydroquinazolinones
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Medicinal Chemistry.ORCID iD: O-3279-2014
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Medicinal Chemistry.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Medicinal Chemistry.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Medicinal Chemistry.
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2015 (English)In: Organic and biomolecular chemistry, ISSN 1477-0520, E-ISSN 1477-0539, Vol. 13, no 7, 2044-2054 p.Article in journal (Refereed) Published
Abstract [en]

A microwave-assisted, multicomponent protocol for the synthesis of substituted 3,4-dihydroquinazolinones via a novel cascade imine/cyclization/aza-Henry reaction sequence is reported. Starting from o-formyl carbamates, a series of structurally diverse 3,4-dihydroquinazolinones was synthesized via a cyclic iminium ion intermediate in moderate to excellent yields. Notably, the reaction is fast, flexible, simple to perform and tolerates a variety of functional groups.

Place, publisher, year, edition, pages
2015. Vol. 13, no 7, 2044-2054 p.
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-245140DOI: 10.1039/c4ob02417fISI: 000349401300016PubMedID: 25518892OAI: oai:DiVA.org:uu-245140DiVA: diva2:790590
Available from: 2015-02-25 Created: 2015-02-25 Last updated: 2017-12-04Bibliographically approved
In thesis
1. Multicomponent Reactions in 11C/12C Chemistry: – Targeting the Angiotensin II Subtype 2 Receptor
Open this publication in new window or tab >>Multicomponent Reactions in 11C/12C Chemistry: – Targeting the Angiotensin II Subtype 2 Receptor
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Section 1 of this thesis contains an introduction to method development in organic synthesis, multicomponent reactions, sulfonyl azides, tracer development in 11C chemistry and the biological target.

Section 2 describes the use of sulfonyl azides in carbonylative chemistry. Paper I covers development of a diazotransfer protocol. In total, 30 arylsulfonyl azides were synthesised from primary sulfonamides (20–90% yield). 15N mechanistic studies were carried out and in Paper II, the products were converted into sulfonamides, sulfonylureas and sulfonyl carbamates (19–90% yield). For ureas and carbamates, a two-chamber protocol was employed to release CO from Mo(CO)6. 15N mechanistic studies showed that the sulfonamides were formed by direct displacement of azide.

Section 3 covers imaging and biological studies of the angiotensin II receptor subtype 2 (AT2R). In Paper III, 12 11C-sulfonyl carbamates were prepared in isolated radiochemical yields of 3–51% via Rh(I)-mediated carbonylation. The first non-peptide AT2R agonist, C21, was labelled (isolated RCY 24±10%, SA 34–51 GBq/µmol). C21 was tested in a prostate cancer assay, followed by biodistribution and small-animal PET studies. In Paper IV, a 11C-labelled AT2R ligand prepared via Pd(0)-mediated aminocarbonylation was used for autoradiography, biodistribution and small-animal PET studies.  

Section 4 describes the development of a multicomponent method for the synthesis of 3,4-dihydroquinazolinones (Paper V). 31 3,4-dihydroquinazolinones were synthesized via a cyclic iminium ion.  

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2016. 93 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Pharmacy, ISSN 1651-6192 ; 219
Keyword
carbonylation, positron emission tomography, multicomponent reactions, AT2R, 3, 4-dihydroquinazolinone, sulfonyl azides
National Category
Organic Chemistry
Research subject
Pharmaceutical Science
Identifiers
urn:nbn:se:uu:diva-295436 (URN)978-91-554-9636-4 (ISBN)
External cooperation:
Public defence
2016-09-23, Hall B21, BMC, Husargatan 3, Uppsala, 09:15 (English)
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Supervisors
Available from: 2016-09-02 Created: 2016-06-07 Last updated: 2016-09-05

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Stevens, Marc YSawant, Rajiv TOdell, Luke R

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