Search for "modified nucleobase" in Full Text gives 4 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2021, 17, 1828–1848, doi:10.3762/bjoc.17.125
Beilstein J. Org. Chem. 2018, 14, 436–469, doi:10.3762/bjoc.14.32
Beilstein J. Org. Chem. 2016, 12, 2136–2144, doi:10.3762/bjoc.12.203
Beilstein J. Org. Chem. 2014, 10, 1495–1503, doi:10.3762/bjoc.10.154