A Diels-Alder Approach to Anthrapyran Antibiotics
Synlett(2012)
摘要
A new entry to the synthesis of anthrapyran antibiotics has been accomplished through the synthesis of a 4H-anthra[1,2-b]pyran-4,7,12-trione model. The key step features a Diels-Alder reaction between a substituted 5-vinyl-3,4-dihydro-2H-pyran and naphthoquinone as the dienophile. The resulting tetracyclic adduct is then processed towards the targeted trione in a few steps.
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关键词
anthrapyran antibiotics,Diels-Alder reaction,quinones,Stille reaction,4H-anthra[1,2-b]pyran-4,7,12-trione
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