Designed molecules reproducing the two conformations of teleocidins.
作者:Michihiro Ohno、Yasuyuki Endo、Masaaki Hirano、Akiko Itai、Koichi Shudo
DOI:10.1016/s0040-4039(00)61468-5
日期:1993.12
Tumor-promoting teleocidins are known to exist in an equilibrium between two conformational states, the twist form and sofa form, in solution. Benzolactam-Vs, in which the indole ring of indolactams was replaced with a benzene ring, were designed in an attempt to reproduce the active conformation of teleocidins, and synthesized. The 8-membered lactam (benzolactam-V8-310) exists only in the twist form in solution and the 9-membered lactam (benzolactam-V9-310) exists only in the sofa form in solution. The stronger biological activities of the 8-membered lactam than those of indolactam-V and the lack of activity of the 9-membered lactam clearly indicated that active conformation for tumor-promoting activity of teleocidins is close to the twist form.