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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-62022

Iliev, Boyan; Verma, Sanjiv; Linden, Anthony; Heimgartner, Heinz (2006). Transformation of 5-Hydroxy- to (5-Chloropentanoyl)amino Derivatives under ‘Direct Amide Cyclization’ Conditions. Helvetica Chimica Acta, 89(2):352-359.

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Abstract

The application of the ‘direct amide cyclization’ conditions to the linear delta-hydroxy diamide 11 is described (Scheme 3). Instead of the cyclization to the expected nine-membered cyclodepsipeptide, only the chloro acid 12 was obtained. Its formation could be explained by consecutive formation of the 1,3-oxazol-5(4H)-one 16 and the six-membered imino lactone 17 as intermediates (Scheme 4). The spontaneous isomerization of the latter gave 12 in a good yield.

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
DDC:540 Chemistry
Language:English
Date:2006
Deposited On:22 May 2012 07:06
Last Modified:05 Jul 2014 11:16
Publisher:Verlag Helvetica Chimica Acta
ISSN:0018-019X
Funders:Swiss National Science Foundation , F. Hoffmann-La Roche AG, Basel
Publisher DOI:10.1002/hlca.200690038

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