Search for "muramyl dipeptide" in Full Text gives 4 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2021, 17, 461–484, doi:10.3762/bjoc.17.41
Beilstein J. Org. Chem. 2019, 15, 1805–1814, doi:10.3762/bjoc.15.174
Beilstein J. Org. Chem. 2014, 10, 1445–1453, doi:10.3762/bjoc.10.148
Beilstein J. Org. Chem. 2013, 9, 900–907, doi:10.3762/bjoc.9.103