<P>The advance online publication (e-First) version of
this article contained three errors:</P><P></P><P>1. In the caption of Scheme 1 the
”chromone-fused diene
6" had erroneously been given as ”chromone-fused
diene
8".</P><P></P><P>2. In the sentence where the synthesis of compound
14 is mentioned, reference to Scheme 3
instead of Scheme 4 was given.</P><P></P><P>3. At the end of the last sentence before
the summary reference
4d was cited, but the correct reference for the mentioned isolation
paper is reference 5.</P><P></P><P>All errors have been corrected for both the current
online version
and the print publication. We apologize for these mistakes.</P>
