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Acknowledgments
We acknowledge support of this work by the National Institutes
of Health, Grant No. R01 GM069711 (K.R.B.). We also acknowledge
additional support of this work by the National Institutes of Health,
the University of Kansas Chemical Methodologies and Library
Development Center of Excellence (KU-CMLD), NIGMS Grant P50
GM069663. We thank Mr. Ben Neuenswander (KU-CMLD) for pro-
viding select high-resolution mass spectral data. This paper is
warmly dedicated to Professor Michael E. Jung on the occasion of
his 65th birthday.
Supplementary data
Supplementary data (a general experimental procedure for the
generation and Diels–Alder trapping of 6,7-dehydrobenzofuran
and select HRMS and NMR data) associated with this article can
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