Transition metal complexes in organic synthesis, part 54. Improved total syntheses of the antibiotic alkaloids carbazomycin A and B
作者:Hans-Joachim Knölker、Wolfgang Fröhner
DOI:10.1016/s0040-4039(99)01418-5
日期:1999.9
Considerably improved total syntheses of the carbazole antibiotics carbazomycin A and B are reported using a convergent iron-mediated one-pot construction of the carbazole framework by oxidative cyclization in the air.
作者:Derrick L. J. Clive、Nola Etkin、Tomi Joseph、J. William Lown
DOI:10.1021/jo00061a017
日期:1993.4
Carbazomycin B (1) was synthesized by radical cyclization of the sulfonamide 14 (Scheme III), followed by deprotection and dehydrogenation.
Transition Metal-Diene Complexes in Organic Synthesis. Part 15. Iron-mediated total synthesis of carbazomycin A and B
作者:Hans-Joachim Knölker、Michael Bauermeister
DOI:10.1002/hlca.19930760709
日期:1993.11.3
very efficient methodology for the synthesis of the antibiotics carbazomycin A (1) and B (2) by oxidative coupling of cyclohexa-1,3-diene and the corresponding arylamine 10 (Scheme 5 and Schemes 7 and 9, resp.). The overall process is achieved by a consecutive Fe-induced formation of the CC and the CN bond. The major benefit of our Fe-mediated carbazole synthesis is that the coupling process is possible