Novel Macroline Oxindoles from a Malayan Alstonia

Novel Macroline Oxindoles from a Malayan Alstonia New Indole Alkaloids from <i>Alstonia macrophylla</i> New Indole Alkaloids from Alstonia macrophylla Macroxine-a novel oxindole alkaloid from Alstonia macrophylla Oxindole alkaloids from Alstonia macrophylla Unusual spirocyclic macroline alkaloids, nitrogenous derivatives, and a cytotoxic bisindole from Alstonia Unusual spirocyclic macroline alkaloids, nitrogenous derivatives, and a cytotoxic bisindole from Alstonia Isolation and Structural Studies on the Alkaloids of Alstonia macrophylla Macrodasine A, a novel macroline derivative incorporating fused spirocyclic tetrahydrofuran rings containing a spiroacetal moiety Alstophyllin, ein neues Indolalkaloid aus <i>Alstonia macrophylla</i> W<scp>ALL</scp>