Search for "chiral porphyrin" in Full Text gives 3 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2016, 12, 882–902, doi:10.3762/bjoc.12.87
Beilstein J. Org. Chem. 2014, 10, 1282–1289, doi:10.3762/bjoc.10.129
Beilstein J. Org. Chem. 2010, 6, No. 32, doi:10.3762/bjoc.6.32