P. Josephnathan et Cm. Cerdagarciarojas, MOLECULAR-REARRANGEMENTS IN LONGIPINANE DERIVATIVES, Pure and applied chemistry, 66(10-11), 1994, pp. 2361-2364
Suitable oxygen substituted ,6,6,9-tetramethyltricyclo[5.4.0.0(2,8]und
ec-9-ene (longipinene) derivatives or their saturated analogues, which
are both isolated as esters from nature, can be transformed to severa
l new ring-system containing molecules, which include methyl-9-methyle
neperhydro-1,5-methanonaphthalene, l-9-methylene-1,2,4a,5,6,7,8,8a-oct
ahydro-1,5-meth anonaphthalene, thyl-4-methyleneperhydro-1,3,5-methano
naphthalene, ,6,6,11-tetramethyltricyclo[5.4.0.0(4,8)]undecane, 2,6,6,
9-tetramethyltricyclo[5.4.0.0(4,8)]undecane and 4,4,8,9-tetramethylper
hydro-1,7-methanonaphthalene derivatives.