Use of a sonogashira-acetylide coupling strategy for the synthesis of the aromatic spiroketal skeleton of gamma-rubromycin.
[reaction: see text] The synthesis of the fused aromatic spiroketal core of gamma-rubromycin is described via addition of an aryl acetylide fragment to an aryl acetaldehyde fragment. In turn, the aryl acetylene precursor was readily prepared with use of a Sonogashira reaction.
Tsang
Kit Y
KY
Department of Chemistry, University of Auckland, 23 Symonds Street, Auckland, New Zealand.
Brimble
Margaret A
MA
Bremner
John B
JB