Antimitotic activity of two macrocyclic bis(bibenzyls), isoplagiochins A and B from the Liverwort Plagiochila fruticosa.
Two bis(bibenzyls), isoplagiochins A (1) and B (2) have been isolated by the guidance of inhibitory effect of tubulin polymerization from the liverwort Plagiochila fruticosa (Plagiochilaceae). Isoplagiochins A and B inhibited the polymerization of tubulin at IC(50) 50 and 25muM, respectively. Furthermore structure-activity relationship based on their conformations was discussed. The presence of two aromatic rings which can be connected through two atoms bridge spacer of double bond may serve to maintain the backbone conformation.
Morita
Hiroshi
H
Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142-8501, Japan. moritah@hoshi.ac.jp
Tomizawa
Yuichiro
Y
Tsuchiya
Tomoe
T
Hirasawa
Yusuke
Y
Hashimoto
Toshihiro
T
Asakawa
Yoshinori
Y
D035926:Hepatophyta / Q000737:chemistry*; D006860:Hydrogen Bonding; D047028:Macrocyclic Compounds / Q000737:chemistry / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy; D008938:Mitosis / Q000187:drug effects*; D013329:Structure-Activity Relationship
D047028:Macrocyclic Compounds; C538707:isoplagiochin A; C538708:isoplagiochin B