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. 2010 Oct 28;5(10):e13713. doi: 10.1371/journal.pone.0013713

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Simmler et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

PMC Copyright notice

Stilbenoids isolated from Vanda coerulea stems belong to the phenanthrene group including 9,10 dihydro-phenanthrenes, 9,10 dihydro-phenanthropyrans and bibenzyles. Carbone numbering relative to NMR data is represented here. Compounds 1 and 4 are 9,10 dihydro-phenanthropyrans, compounds 2 and 5 are 9,10 dihydro-phenanthrenes and compound 3 is a bibenzyle.