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Synthesis 2010(10): 1707-1711
DOI: 10.1055/s-0029-1218735
DOI: 10.1055/s-0029-1218735
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
The Meldrum’s Acid Route to Prodigiosin Analogues
Further Information
Received
15 February 2010
Publication Date:
09 April 2010 (online)
Publication History
Publication Date:
09 April 2010 (online)
Abstract
3-Methoxy-5-(2-thienyl)thiophene-2-carboxaldehyde and 3-methoxy-l-methyl-5-(2-thienyl)pyrrole-2-carboxaldehyde were prepared from the appropriate 3-hydroxypyrrole or 3-hydroxythiophene by regioselective O-alkylation and formylation. Condensation of these aldehydes with activated pyrroles in the presence of phosphoryl chloride provides analogues of prodigiosin, which differ from the natural products in the nature of the heteroatoms.
Key words
gas-phase reactions - heterocycles - pyrroles - prodigiosins
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