PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16442292-1 2006 A series of analogs with nitro or serinamide substituents at the C-2"-, C-5"-, or C-6"-position of the combretastatin A-4 (CA4) B-ring was synthesized and evaluated for cytotoxic effects against heart endothelioma cells, blood flow reduction to tumors in SCID mice, and as inhibitors of tubulin polymerization. nitro 25-30 carbonic anhydrase 4 Mus musculus 103-121 16442292-3 2006 Several of these nitrogen-modified CA4 derivatives (both amino and nitro) demonstrate significant inhibition of tubulin assembly as well as cytotoxicity and in vivo blood flow reduction. nitro 17-22 carbonic anhydrase 4 Mus musculus 35-38