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Abstract
[reaction: see text] The convergent total synthesis of (+)-okaramine J was achieved
in a longest linear sequence of 12 steps from l-tryptophan tert-butyl ester. A key
reaction was the acid-catalyzed room-temperature aza-Claisen rearrangement of a N-reverse-prenylated
hexahydro[2,3-b]pyrroloindole to a C-prenylated derivative.