Alkaloids of Daphnandra species. Part VII. Chemical evidence for the structure of repanduline
Chemical degradative evidence for the structure of repanduline is presented. It is concluded that the alkaloid is an unusually modified bisbenzylisoquinoline containing a cyclohexa-2,4-dienone system and a 1,4-benzodioxan system joined by a spiro-linkage. A close relationship to nortenuipine is suggested.