Tetrahedron letters

A biomimetic synthesis of the indolo [3, 2-j] phenanthridine alkaloid, calothrixin B

…, S Tohyama, K Matsumoto, K Ohmura, J Nobuhiro…

Index: Yamabuki, Akira; Fujinawa, Hikohito; Choshi, Tominari; Tohyama, Shigeo; Matsumoto, Kohji; Ohmura, Kana; Nobuhiro, Junko; Hibino, Satoshi Tetrahedron Letters, 2006 , vol. 47, # 33 p. 5859 - 5861

Full Text: HTML

Citation Number: 47

Abstract

A biomimetic approach to calothrixin B via a hypothetical metabolite, 6-formylindolo [2, 3-a] carbazole, is described. The construction of a suitable indolo [2, 3-a] carbazole ring system was carried out using an allene-mediated electrocyclic reaction involving two [b]-bonds of indoles as the key step.