期刊
ORGANIC & BIOMOLECULAR CHEMISTRY
卷 9, 期 20, 页码 7196-7206出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ob05867c
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A series of pentacyclic heterocyclic systems (15 examples, 69-89%) have been synthesized using intramolecular Povarov reactions involving 3-aminocoumarins and O-cinnamylsalicylaldehydes. The Povarov adducts are formed with high selectivity for the trans, trans relative stereochemistry in the newly-formed [6,6] fused ring system. One example of a Povarov adduct featuring a new [6,5] fused ring system is reported. In this case, cis, trans relative stereochemistry was preferred.
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