Synthesis of substituted γ- and δ-lactams through mannich-type reactions of solid-supported N -acyliminium ions

We report the results of our recent investigations into the reactivity of cyclic solid-supported N-acyliminium ions. An intermolecular Mannich-type transformation of these intermediates was used to generate libraries of substituted lactams. Masked aldehyde building blocks were readily prepared and c...

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Main Authors: Komnatnyy, Vitaly V., Taveras, Kennedy M., Nandurkar, Nitin S., Le Quement, Sebastian T., Givskov, Michael, Nielsen, Thomas Eiland
Other Authors: Singapore Centre for Environmental Life Sciences Engineering
Format: Article
Language:English
Published: 2015
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Online Access:https://hdl.handle.net/10356/107485
http://hdl.handle.net/10220/25576
http://dx.doi.org/10.1002/ejoc.201500054
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1074852019-12-06T22:32:12Z Synthesis of substituted γ- and δ-lactams through mannich-type reactions of solid-supported N -acyliminium ions Komnatnyy, Vitaly V. Taveras, Kennedy M. Nandurkar, Nitin S. Le Quement, Sebastian T. Givskov, Michael Nielsen, Thomas Eiland Singapore Centre for Environmental Life Sciences Engineering DRNTU::Science::Chemistry::Organic chemistry We report the results of our recent investigations into the reactivity of cyclic solid-supported N-acyliminium ions. An intermolecular Mannich-type transformation of these intermediates was used to generate libraries of substituted lactams. Masked aldehyde building blocks were readily prepared and coupled to peptides immobilized on PEGA800(polyethylene glycol dimethyl acrylamide) resin through an HMBA [4-(hydroxymethyl)benzoic acid] linker. When treated with acid, the aldehyde was cleanly released and condensed with the amide backbone to form a hydroxylactam/N-acyliminium ion, which underwent intermolecular reactions with a series of nucleophilic heterocycles, such as substituted indoles, thiophenes, furans, and electron-rich benzenes. The resulting lactams were formed within a few minutes and in high purities (typically >85 %). 2015-05-18T05:01:05Z 2019-12-06T22:32:12Z 2015-05-18T05:01:05Z 2019-12-06T22:32:12Z 2015 2015 Journal Article Komnatnyy, V. V., Taveras, K. M., Nandurkar, N. S., Le Quement, S. T., Givskov, M., & Nielsen, T. E. (2015). Synthesis of substituted γ- and δ-lactams through mannich-type reactions of solid-supported N -acyliminium ions. European journal of organic chemistry, 2015(16), 3524-3530. 1434-193X https://hdl.handle.net/10356/107485 http://hdl.handle.net/10220/25576 http://dx.doi.org/10.1002/ejoc.201500054 en European journal of organic chemistry © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Science::Chemistry::Organic chemistry
spellingShingle DRNTU::Science::Chemistry::Organic chemistry
Komnatnyy, Vitaly V.
Taveras, Kennedy M.
Nandurkar, Nitin S.
Le Quement, Sebastian T.
Givskov, Michael
Nielsen, Thomas Eiland
Synthesis of substituted γ- and δ-lactams through mannich-type reactions of solid-supported N -acyliminium ions
description We report the results of our recent investigations into the reactivity of cyclic solid-supported N-acyliminium ions. An intermolecular Mannich-type transformation of these intermediates was used to generate libraries of substituted lactams. Masked aldehyde building blocks were readily prepared and coupled to peptides immobilized on PEGA800(polyethylene glycol dimethyl acrylamide) resin through an HMBA [4-(hydroxymethyl)benzoic acid] linker. When treated with acid, the aldehyde was cleanly released and condensed with the amide backbone to form a hydroxylactam/N-acyliminium ion, which underwent intermolecular reactions with a series of nucleophilic heterocycles, such as substituted indoles, thiophenes, furans, and electron-rich benzenes. The resulting lactams were formed within a few minutes and in high purities (typically >85 %).
author2 Singapore Centre for Environmental Life Sciences Engineering
author_facet Singapore Centre for Environmental Life Sciences Engineering
Komnatnyy, Vitaly V.
Taveras, Kennedy M.
Nandurkar, Nitin S.
Le Quement, Sebastian T.
Givskov, Michael
Nielsen, Thomas Eiland
format Article
author Komnatnyy, Vitaly V.
Taveras, Kennedy M.
Nandurkar, Nitin S.
Le Quement, Sebastian T.
Givskov, Michael
Nielsen, Thomas Eiland
author_sort Komnatnyy, Vitaly V.
title Synthesis of substituted γ- and δ-lactams through mannich-type reactions of solid-supported N -acyliminium ions
title_short Synthesis of substituted γ- and δ-lactams through mannich-type reactions of solid-supported N -acyliminium ions
title_full Synthesis of substituted γ- and δ-lactams through mannich-type reactions of solid-supported N -acyliminium ions
title_fullStr Synthesis of substituted γ- and δ-lactams through mannich-type reactions of solid-supported N -acyliminium ions
title_full_unstemmed Synthesis of substituted γ- and δ-lactams through mannich-type reactions of solid-supported N -acyliminium ions
title_sort synthesis of substituted γ- and δ-lactams through mannich-type reactions of solid-supported n -acyliminium ions
publishDate 2015
url https://hdl.handle.net/10356/107485
http://hdl.handle.net/10220/25576
http://dx.doi.org/10.1002/ejoc.201500054
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