Photochemical route to cembranoids containing a cis-disubstituted double bond

The 2-cis isomers of the natural diterpenoids isocembrol, 4-epiisocembrol, and isocembrene have been synthesized from a norcembrane ketone by the use of photochemical methods.Novosibirsk Institute of Organic Chemistry, Siberian Branch, USSR Academy of Sciences. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 180–187, March–April, 1988.