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(4R)-Ethyl 4-(4-chloro­phen­yl)-2-hydr­oxy-5-oxo-2,3,4,5-tetra­hydro­pyrano[3,2-c]chromene-2-carboxyl­ate

The title compound, C(21)H(17)ClO(6), is optically pure and adopts an R configuration. It was obtained by an organocatalytic asymmetric Michael addition of 4-hydroxy­coumarin with (E)-ethyl 4-(4-chloro­phen­yl)-2-oxobut-3-enoate. The structure consists of a tetra­hydro­pyran unit fused to the coumar...

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Bibliografski detalji
Glavni autori: Wang, Yifeng, Zhang, Wei, Xu, Xiangsheng, Zhang, Guangcun
Format: Artigo
Jezik:Inglês
Izdano: International Union of Crystallography 2009
Teme:
Online pristup:https://ncbi.nlm.nih.gov/pmc/articles/PMC2980058/
https://ncbi.nlm.nih.gov/pubmed/21580101
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1107/S1600536809051976
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