Search for "polycyclic compounds" in Full Text gives 28 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2009, 5, No. 81, doi:10.3762/bjoc.5.81
Beilstein J. Org. Chem. 2009, 5, No. 39, doi:10.3762/bjoc.5.39
Beilstein J. Org. Chem. 2005, 1, No. 17, doi:10.1186/1860-5397-1-17