Georgi Stavrakov et al. From Central to Axial to Central Chirality: Enantioselective Construction of the trans-4,5,9,10-Tetrahydroxy-9,10-dihydrophenanthrene System
// European Journal of Organic Chemistry Volume 2007, Issue 34 , Pages 5726 - 5733
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http://dx.doi.org/10.1002/ejoc.200700583Заранее благодарен