Search for "pyrazolopyrimidines" in Full Text gives 4 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2020, 16, 281–289, doi:10.3762/bjoc.16.27
Beilstein J. Org. Chem. 2019, 15, 1236–1256, doi:10.3762/bjoc.15.121
Beilstein J. Org. Chem. 2018, 14, 203–242, doi:10.3762/bjoc.14.15
Beilstein J. Org. Chem. 2012, 8, 2223–2229, doi:10.3762/bjoc.8.251