M. Toyota et al., STEMODIN SYNTHESIS .2. HIGHLY DIASTEREOSELECTIVE FORMAL TOTAL SYNTHESIS OF (PLUS-OR-MINUS)-STEMODIN VIA PD2-PROMOTED CYCLOALKENYLATION REACTION(), Tetrahedron, 50(12), 1994, pp. 3673-3686
Diastereoface-selective Pd2+-promoted cycloalkenylation reaction (22--
>24) has been employed as the key step for a conceptually new and high
ly diastereocontrolled formal total synthesis of (+/-)-stemodin (1). I
nterestingly, the synthetic intermediates (12) and its stereoisomer (2
9) exhibited strong cytotoxicity.