Peptides and peptide-targeted multimeric contrast agents are described, as well as methods of making and using the contrast agents.
本文描述了肽和肽靶向多聚对比剂,以及制备和使用对比剂的方法。
Spiro Derivatives of Parthenin as Novel Anticancer Agents
申请人:Halmuthur Mahabalarao Sampath Kumar
公开号:US20110201661A1
公开(公告)日:2011-08-18
The present invention relates to novel spiro derivatives of parthenin prepared by the dipolar cycloaddition of various dipoles viz, benzonitrile oxides, nitrones, azides, nitrile ylide diazoalkane, nitrile imide, ozone, azomethine imides, azomethine ylides etc. with exocyclic double bond of C ring (α-methylene-γ-butyrolactone). Representative compounds have been screened for their anticancer activity against different cancer cell lines. ICs0 value of these analogues varies between 4.3 μM to 93 μM. A mechanistic correlation of their anticancer activity has been described. The results of the cytotoxicity test of the compounds studies indicated that the α,β-unsaturated ketonic moiety in parthenin plays an important role in the maintenance of the high level of cytotoxicity.