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Čikoš A, Triballeau N, Hubbard PA, Žiher D, Stouten PFW, Doyon JGPO, Deschrijver T, Wouters J, Lépine RHM, Saniere L. Reinvestigation of the Branimycin Stereochemistry at Position 17-C. Org Lett 2016; 18:780-3. [DOI: 10.1021/acs.orglett.6b00044] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ana Čikoš
- Fidelta, Ltd., Prilaz
baruna Filipovića 29, 10000 Zagreb, Croatia
| | - Nicolas Triballeau
- Galapagos SASU,
Parc Biocitech, 102 Avenue Gaston Roussel, 93230 Romainville, France
| | - Paul A. Hubbard
- BioFocus DPI, Ltd., Chesterford Research
Park, Saffron Walden CB10
1XL, United Kingdom
| | - Dinko Žiher
- Fidelta, Ltd., Prilaz
baruna Filipovića 29, 10000 Zagreb, Croatia
| | - Pieter F. W. Stouten
- Galapagos NV,
Industriepark Mechelen Noord, Generaal De Wittelaan
L11 A3, 2800 Mechelen, Belgium
| | - Julien G. P.-O. Doyon
- Galapagos NV,
Industriepark Mechelen Noord, Generaal De Wittelaan
L11 A3, 2800 Mechelen, Belgium
| | - Tiny Deschrijver
- Galapagos NV,
Industriepark Mechelen Noord, Generaal De Wittelaan
L11 A3, 2800 Mechelen, Belgium
| | - Johan Wouters
- Université de Namur ASBL, Rue de
Bruxelles 61, 5000 Namur, Belgium
| | - Renaud H. M. Lépine
- Galapagos SASU,
Parc Biocitech, 102 Avenue Gaston Roussel, 93230 Romainville, France
| | - Laurent Saniere
- Galapagos SASU,
Parc Biocitech, 102 Avenue Gaston Roussel, 93230 Romainville, France
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Čikoš A, Ćaleta I, Žiher D, Vine MB, Elenkov IJ, Dukši M, Gembarovski D, Ilijaš M, Dragojević S, Malnar I, Alihodžić S. Structure and conformational analysis of spiroketals from 6-O-methyl-9(E)-hydroxyiminoerythronolide A. Beilstein J Org Chem 2015; 11:1447-57. [PMID: 26425201 PMCID: PMC4578343 DOI: 10.3762/bjoc.11.157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 07/23/2015] [Indexed: 11/23/2022] Open
Abstract
Three novel spiroketals were prepared by a one-pot transformation of 6-O-methyl-9(E)-hydroxyiminoerythronolide A. We present the formation of a [4.5]spiroketal moiety within the macrolide lactone ring, but also the unexpected formation of a 10-C=11-C double bond and spontaneous change of stereochemistry at position 8-C. As a result, a thermodynamically stable structure was obtained. The structures of two new diastereomeric, unsaturated spiroketals, their configurations and conformations, were determined by means of NMR spectroscopy and molecular modelling. The reaction kinetics and mechanistic aspects of this transformation are discussed. These rearrangements provide a facile synthesis of novel macrolide scaffolds.
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Affiliation(s)
- Ana Čikoš
- GlaxoSmithKline Research Centre Zagreb Ltd, Prilaz baruna Filipovića 29, 10000 Zagreb, Croatia
| | - Irena Ćaleta
- GlaxoSmithKline Research Centre Zagreb Ltd, Prilaz baruna Filipovića 29, 10000 Zagreb, Croatia
| | - Dinko Žiher
- GlaxoSmithKline Research Centre Zagreb Ltd, Prilaz baruna Filipovića 29, 10000 Zagreb, Croatia
| | - Mark B Vine
- GlaxoSmithKline, New Frontiers Science Park, Harlow, CM19 5AW, United Kingdom
| | - Ivaylo J Elenkov
- GlaxoSmithKline Research Centre Zagreb Ltd, Prilaz baruna Filipovića 29, 10000 Zagreb, Croatia
| | - Marko Dukši
- GlaxoSmithKline Research Centre Zagreb Ltd, Prilaz baruna Filipovića 29, 10000 Zagreb, Croatia
| | - Dubravka Gembarovski
- GlaxoSmithKline Research Centre Zagreb Ltd, Prilaz baruna Filipovića 29, 10000 Zagreb, Croatia
| | - Marina Ilijaš
- GlaxoSmithKline Research Centre Zagreb Ltd, Prilaz baruna Filipovića 29, 10000 Zagreb, Croatia
| | - Snježana Dragojević
- GlaxoSmithKline Research Centre Zagreb Ltd, Prilaz baruna Filipovića 29, 10000 Zagreb, Croatia
| | - Ivica Malnar
- GlaxoSmithKline Research Centre Zagreb Ltd, Prilaz baruna Filipovića 29, 10000 Zagreb, Croatia
| | - Sulejman Alihodžić
- GlaxoSmithKline Research Centre Zagreb Ltd, Prilaz baruna Filipovića 29, 10000 Zagreb, Croatia
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Structural elucidation studies of 15-membered azalide macrocycles using H/D exchange and ESI-MSn. J Pharm Biomed Anal 2013; 86:1-10. [DOI: 10.1016/j.jpba.2013.07.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 06/29/2013] [Accepted: 07/07/2013] [Indexed: 11/21/2022]
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Ma J, Peczuh MW. Positioning and Configuration of Key Atoms Influence the Topology of [13]-Macrodiolides. J Org Chem 2013; 78:7414-22. [DOI: 10.1021/jo400383g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jun Ma
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road U3060, Storrs,
Connecticut 06269, United States
| | - Mark W. Peczuh
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road U3060, Storrs,
Connecticut 06269, United States
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Ponikvar-Svet M, Zeiger DN, Keating LR, Liebman JF. Interplay of thermochemistry and Structural Chemistry, the journal (volume 23, 2012, issues 4–6) and the discipline. Struct Chem 2013. [DOI: 10.1007/s11224-013-0280-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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