Synthesis Of Carbacephem Antibiotics - Synthesis Via Dieckmann Reaction Using Phenyl-Esters To Direct The Regioselectivity Of The Cyclization
TETRAHEDRON LETTERS（1990）
摘要
The carbacephem ring system is formed by Dieckmann cyclization of diesters to give β-ketoesters, existing in the enolic form. Phenyl and thiophenyl esters are used to direct the regioselectivity.
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