PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19703775-3 2009 Compared with their corresponding 4-hydroxy compounds, these derivatives exhibited slight improvement on their inhibitory potency, but still much weaker than their corresponding compounds with no substituents at the C-4 of the pyrrolidine moiety, with the most potent affinity being about 1/15 fold as that of Tiagabine. pyrrolidine 227-238 complement component 4B (Chido blood group) Mus musculus 216-219