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A detailed analysis of the 400 MHz 1H-NMR spectrum of magydardienediol (1), a diterpene isolated from Magydaris panacifolia (Vahl) Lange, has been performed by use of a combination of proton homonuclear spin decoupling, COSY, NOE difference, and NOESY techniques. This 1H-NMR spectral analysis, in conjunction with the mass spectral analysis of some derivatives of 1, revealed that the structure of 1 should be revised to t-6-hydroxymethyl-1,t-3-dimethyl-t-2-(3-methyl-2-butenyl)-3-(4-methyl-3-pentenyl)-γ-1-cyclohexanol.

Hydrogenation of unhindered cyclohexanones with rhodium catalyst in isopropyl alcohol or tetrahydrofuran in the presence of hydrochloric acid gives excellent yields of axial alcohols. Steroidal 3,17- and 3,20-diones are selectively hydrogenated at C-3 to give the corresponding 3-axial-hydroxy ketones in high yields.