Em. Stocking et al., Total synthesis of VM55599. Utilization of an intramolecular Diels-Alder cycloaddition of potential biogenetic relevance, J AM CHEM S, 122(8), 2000, pp. 1675-1683
The total synthesis of VM55599, a natural metabolite of Penicillium sp. IMI
332995, has been achieved via an intramolecular Diels-Alder cycloaddition o
f a reverse isoprene moiety across an azadiene system. The diastereoselecti
vity of the intramolecular Diels-Alder cycloaddition has biogenetic implica
tions and is discussed in the context of the biogenetic relationship of VM5
5599 to the paraherquamides.