title: 2-amino and 2'-aminocombretastatin derivatives as potent antimitotic agents.
abstract: A novel series of 2-amino and 2'-aminocombretastatin derivatives were synthesized and evaluated for antitumor activity. Several compounds had excellent antiproliferative activity as inhibitors of tubulin polymerization. Compounds 11, 20, and 21 with IC(50) values of 1.6, 1.7, and 1.8 microM, respectively, exhibited more potent inhibition of tubulin polymerization than colchicine and approximately as active as combretastatin A-4. They also displayed antiproliferative activity with an IC(50) values ranging from 11 to 44 nM in a variety of human cell lines from different organs. Structure activity relationship information suggests that the NH(2) substituent at the 2-position of either ring A or ring B in combretastatin molecular skeleton may play an important role in the bioactivity of this series of compounds.
authors.affiliation: Institute of Cancer Research, National Health Research Institutes, Taipei 114, Taiwan.
authors.forename: Jang-Yang
authors.initials: JY
authors.lastname: Chang
authors.forename: Ming-Fang
authors.initials: MF
authors.lastname: Yang
authors.forename: Chi-Yen
authors.initials: CY
authors.lastname: Chang
authors.forename: Chi-Ming
authors.initials: CM
authors.lastname: Chen
authors.forename: Ching-Chuan
authors.initials: CC
authors.lastname: Kuo
authors.forename: Jing-Ping
authors.initials: JP
authors.lastname: Liou
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D003078:Colchicine / Q000494:pharmacology; D019008:Drug Resistance, Neoplasm; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D013267:Stilbenes / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D013329:Structure-Activity Relationship; D050257:Tubulin Modulators / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology
chemical_list: D000970:Antineoplastic Agents; D013267:Stilbenes; D050257:Tubulin Modulators; C058728:fosbretabulin; D003078:Colchicine