Synthesis of<i>Aristotelia</i>-type alkaloids. Part IX. Synthesis of (±)-alloaristoteline
作者:Rolf Güller、Hans-Jürg Borschberg
DOI:10.1002/hlca.19910740805
日期:1991.12.11
The probably most straightforward plan to synthesize the indole alkaloid alloaristoteline (5) failed, because– in marked contrast to the regular Aristotelia series-electrophilic reagents attack with preference C(3) of the indole moiety in the key intermediate allohobartine ((−)-12), instead of C(18). The only product that could be isolated when (−)-12 was treated with mineral acid was isomer (+)-15