Synthesis of Aristotelia-Type Alkaloids. Part XII. Total synthesis of (−)-tasmanine. Stereoelectronic factors that control the rearrangement of 3H-indol-3-ol derivatives to oxindoles ( = 1,3-dihydro-2H-indol-2-ones) or to pseudoindoxyls ( =1,2-dihydro-3H-
作者:Rolf Güller、Hans-Jürg Borschberg
DOI:10.1002/hlca.19930760505
日期:1993.8.11
The oxidative transformation of (+)-aristoteline ((+)-5) into its metabolites, the recently synthesized indole alkaloids (−)-serratoline ((−)-6), (+)-aristotelone ((+)-2), and (−)-alloaristoteline ((−)-22), was investigated in more detail. It was demonstrated that the diastereoface selectivity of the reaction of (+)-5 with 3-chloroperbenzoic acid can be altered by variation of the solvent as well as