Synthesis of the novel marine diterpenes (.+-.)-isocopal-12-ene-15,16-dial, (.+-.)-14-epiisocopal-12-ene-15,16-dial, and (.+-.)-15-acetoxyisocopal-12-en-16-al from methyl isocopalate
Synthesis of the novel marine diterpenes (.+-.)-isocopal-12-ene-15,16-dial, (.+-.)-14-epiisocopal-12-ene-15,16-dial, and (.+-.)-15-acetoxyisocopal-12-en-16-al from methyl isocopalate