First synthesis of caerulomycin B. A new synthesis of caerulomycin C |
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Authors: | Mongin Florence Trécourt François Gervais Bruno Mongin Olivier Quéguiner Guy |
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Institution: | Laboratoire de Chimie Organique Fine et Hétérocyclique, IRCOF, UMR 6014, Place E. Blondel, BP 08, 76131 Mont-Saint-Aignan Cédex, France. |
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Abstract: | Caerulomycins produced by Streptomyces caeruleus are bipyridinic molecules endowed with antibiotic properties. The first synthesis of caerulomycin B (1) as well as a new synthesis of caerulomycin C (2) are reported. Starting from 3-hydroxypyridine, the same methodology was used to prepare both compounds 1 and 2. Efficiently controlled reactions such as metalation to allow the synthesis of 2,6-diiodo-3,4-dialkoxypyridines, which are key intermediates, and further halogen-lithium exchange and cross-coupling to reach the targets molecules 1 and 2 have been developed. |
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