IMDA cycloadditions of 3-alkynyl tethered 2-pyrones for the synthesis of medium-sized macrocycles
摘要:
Alkynyl tethered 2-pyrones underwent intramolecular Diels-Alder cycloadditions to provide bicyclolactone-fused medium-sized macrocycles in good overall yields. Lactone ring opening reactions furnished various ring fused medium-sized macrolactams and macroazanes with good overall yields. (C) 2004 Elsevier Ltd. All rights reserved.
IMDA cycloadditions of 3-alkynyl tethered 2-pyrones for the synthesis of medium-sized macrocycles
摘要:
Alkynyl tethered 2-pyrones underwent intramolecular Diels-Alder cycloadditions to provide bicyclolactone-fused medium-sized macrocycles in good overall yields. Lactone ring opening reactions furnished various ring fused medium-sized macrolactams and macroazanes with good overall yields. (C) 2004 Elsevier Ltd. All rights reserved.