Nucleophilic Substitution in the Allyl System of Codeine and Pseudocodeine in their Reactions with Lithium Methyl- and Aryl-cyanocuprates. Crystal and Molecular Structure of 8α-Phenyl-6,7-didehydro-4,5α-epoxy-3-methoxy-17-methylmorphinan and 6β-Phenyl-7,8-didehydro-4,5α-epoxy-3-methoxy-17-methylmorphinan
Valery Nikolaevich Kalinin, Irina Leonidovna Belyakova, Vladimir Vasil'evich Kobak, Pavel Vasil'evich Petrovskii, Aleksandr Il'ich Yanovsky, Yuri Timofeevich Struchkov