PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 21671859-8 2011 According to different structural features, direct HIF-1 inhibitors are divided into several groups: polyamides, quinols and naphthoquinone spiroketal analogues, shikonin derivatives, epidithiodiketopiperazines, and two representative drugs: echinomycin and bortezomib. Hydroquinones 113-120 hypoxia inducible factor 1 subunit alpha Homo sapiens 51-56