作者:Dale L. Boger、Takahide Nishi、Bradley R. Teegarden
DOI:10.1021/jo00096a043
日期:1994.8
The synthesis and preliminary evaluation of 10 and 11, stable precursors to the inherently reactive but isolable p-quinonemethide analog 9 of the CC-1065 and duocarmycin alkylation subunits, are detailed. The p-quinonemethide 9, while reactive (t(1/2) < 1 min, CH3OH), represents one of the few unsubstituted quinonemethides sufficiently stable for isolation and characterization. The structural origin of this stability and the ramifications of the observations on the origin of the stability of the CC-1065 and duocarmycin alkylation subunits are discussed.