Synthesis of the oxa-bridged octalin system of two anti-anaerobe antibiotics, luminamicin and lustromycin
摘要:
An efficient, stereocontrolled entry to the 11-oxatricyclo[5.3.1.(1,7)()(3,8)]undecane nucleus of luminamicin and lustromycin was afforded via intramolecular hetero-Michael addition of enone 7 followed by intramolecular aldol condensation of aldehyde 5 by way of the epimerization at the stereocenter attached by the aldehyde group. (C) 2007 Elsevier Ltd. All rights reserved.
Synthesis of the oxa-bridged octalin system of two anti-anaerobe antibiotics, luminamicin and lustromycin
摘要:
An efficient, stereocontrolled entry to the 11-oxatricyclo[5.3.1.(1,7)()(3,8)]undecane nucleus of luminamicin and lustromycin was afforded via intramolecular hetero-Michael addition of enone 7 followed by intramolecular aldol condensation of aldehyde 5 by way of the epimerization at the stereocenter attached by the aldehyde group. (C) 2007 Elsevier Ltd. All rights reserved.