PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15467244-1 2004 A conventional new route to the novel oxazolidin-2-one derivatives (3a-f) having two substituents on N-3 and C-4 in the oxazolidin-2-one ring was established with racemic beta-aminoalanine derivatives (1) as the key starting materials. 2,3-diaminopropionic acid 171-188 complement C4A (Rodgers blood group) Homo sapiens 109-112