JOURNAL OF CHEMICAL RESEARCH-S, ss.530-532, 2004 (SCI İndekslerine Giren Dergi)
The stereochemistry of the addition of methylmagnesium bromide to boat ring B C-6 and C-7 ketones of the rosane and to C-16 of the beyerane diterpenoids has been shown to take place from the less-hindered face of the molecule.