Journal of Organic Chemistry p. 1087 - 1094 (1994)
Update date:2022-09-26
Topics:
Arai, Hitoshi
Kasai, Masaji
Synthesis of novel 6-demethyl-6-halomitomycins (3, 4, 6, and 7) and 6-demethyl-6-thiomytomycins (5 and 8) is described from key intermediates, namely, 6-demethyl-7,7-(ethylenedioxy)-6,6-dihalo-6,7-dihydromitosanes (18 and 19) and 6-demethyl-7,7-(ethylenedioxy)-6,7-dihydro-6-thiomitosane (20), respectively.Compounds 18-20 were prepared through a tandem Michael addition and a retro-Mannich reaction sequence (N-halosucinimide or cationic arylsulfenyl species in the presence of Et2NH) on 10.
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