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Synthesis 2006(5): 853-859
DOI: 10.1055/s-2006-926329
DOI: 10.1055/s-2006-926329
PAPER
© Georg Thieme Verlag Stuttgart · New York
A Concise Route for the Synthesis of Biologically Interesting Pyranocoumarins - Seselin, (±)-cis-Khellactone, (±)-Quianhucoumarin D, and the (±)-5-Deoxyprotobruceol-I Regioisomer
Further Information
Publication History
Received
20 July 2005
Publication Date:
07 February 2006 (online)


Abstract
An efficient synthesis of pyranocoumarins is achieved starting from 2H-pyrans. This process provides naturally occurring seselin, cis-khellactone, quianhucoumarin D, and the 5-deoxyprotobruceol-I regioisomer.
Key words
ring-opening - epoxides - nucleophiles - formylations - pyranocoumarin derivatives