A tyrosine-derived benzofuranone related to diazonamide A.
[formula: see text] Cyclization of 8 with PPA followed by MCPBA oxidation affords the benzofuranone 10. Treatment with a chiral chloroformate in the presence of DMAP affords the target benzofuranone 13 via an enol ester 12.
Vedejs,Wang
p. 1031 - 1032
(2007/10/03)
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