Scheme 6.

Key steps in a formal synthesis of (+)-fostriecin (CI-920).[xiii] TBS = tert-butyldimethylsilyl, TES = triethylsilyl, TPSH = 2,4,6-triisopropylbenzenesulfonyl hydrazide.

Key steps in a formal synthesis of (+)-fostriecin (CI-920).[xiii] TBS = tert-butyldimethylsilyl, TES = triethylsilyl, TPSH = 2,4,6-triisopropylbenzenesulfonyl hydrazide.