title: Letter: Synthesis of the non-tryptamine moiety of the aspidosperma-type indole alkaloids via cleavage of cyclic alpha-diketone monothioketal. An efficient synthesis of (dl)-quebrachamine and a formal synthesis of (dl)-tabersonine.
mesh_terms: D000470:Alkaloids / Q000138:chemical synthesis*; D003500:Cyclization; D007211:Indoles / Q000138:chemical synthesis*; D007659:Ketones; D008722:Methods; D014363:Tryptamines
chemical_list: D000470:Alkaloids; D007211:Indoles; D007659:Ketones; D014363:Tryptamines