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Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UK
E-mail: mo263@cam.ac.uk
; Fax: +44 (0) 1223 336442
; Tel: +44 (0) 1223 336398
Org. Biomol. Chem., 2008,6, 1159-1164
DOI:
10.1039/B719569A
Received
19 Dec 2007,
Accepted
25 Jan 2008
First published online
19 Feb 2008
Azeotropic reflux chromatography (in which the eluent is continuously recycled by means of refluxing) was used to separate a mixture of spiroketal intermediates in the scale-up synthesis of spongistatin 1, leading to an improved separation and an approximately 35-fold reduction in the amount of solvent used.
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Organic & Biomolecular Chemistry
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