Search for "glycyrrhetinic acid" in Full Text gives 3 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2020, 16, 798–808, doi:10.3762/bjoc.16.73
Beilstein J. Org. Chem. 2013, 9, 2877–2885, doi:10.3762/bjoc.9.324
Beilstein J. Org. Chem. 2012, 8, 705–711, doi:10.3762/bjoc.8.79