Transition metal complexes in organic synthesis, part 54. Improved total syntheses of the antibiotic alkaloids carbazomycin A and B
✍ Scribed by Hans-Joachim Knölker; Wolfgang Fröhner
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- French
- Weight
- 228 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
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.
📜 SIMILAR VOLUMES
Evidence for the structure of 13 was provided by the sharp s at 12.67 ppm (phenol OH) in the 'H-NMR spectrum. The substitution pattern was confirmed by NOE difference spectra. Irradiation at the Me signal at 2.28 ppm resulted in a NOE of the aromatic proton at 6.67 ppm.
The first total synthesis of the carbazole quinol alkaloids carbazomycin G and H has been achieved by a highly convergent synthesis using an iron-mediated construction of the carbazole nucleus as key-step. @ 1997 Elsevier Science Ltd. The carbazomycins A to H were isolated by Nakamura and co-worker