R. Stahl et al., SYNTHESIS OF ARISTOTELIA-TYPE ALKALOIDS .8. TOTAL SYNTHESES OF (-MAKONINE, (+)-ARISTOTELINONE, AND (+)-11,12-DIDEHYDROARISTOTELINE()), Helvetica Chimica Acta, 77(8), 1994, pp. 2125-2132
The oxidative transformation of synthetic (+)-aristoteline ((+)-6) int
o other metabolites which had been isolated from Arislotelia species w
as investigated. Thus, treatment of (+)-6 with I? as the single oxidan
t furnished the naturally occurring indole alkaloids (+)-makonine ((+)
-9), (+)-aristotelinone ((+)-11), or (+)-11,12-didehydro-aristoteline
((+)-7) in good yields, the selectivity of the oxidation process depen
ding on the chosen reaction conditions.