Scheme 1.
(2-column fitting image, color should not be used): Synthesis of triaminomitosenes 6a and 6b. R=Ph for 6a R=Me for 6b; Teoc=2-(trimethylsilyl)ethoxycarbonyl; Teoc-ONp=2-(trimethylsilyl)-ethyl-4-nitrophenyl carbonate.
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