Alcohol-, Diol-, and Carbohydrate-Substituted Indenoisoquinolines as Topoisomerase I Inhibitors: Investigating the Relationships Involving Stereochemistry, Hydrogen Bonding, and Biological Activity
作者:Katherine E. Peterson、Maris A. Cinelli、Andrew E. Morrell、Akhil Mehta、Thomas S. Dexheimer、Keli Agama、Smitha Antony、Yves Pommier、Mark Cushman
DOI:10.1021/jm101338z
日期:2011.7.28
topoisomerase I (Top1) can be inhibited by heterocyclic compounds such as indolocarbazoles and indenoisoquinolines. Carbohydrate and hydroxyl-containing side chains are essential for the biological activity of indolocarbazoles. The current study investigated how similar functionalities could be “translated” to the indenoisoquinoline system and how stereochemistry and hydrogenbonding affect biological
The effect of MR1 ligand glyco-analogues on mucosal-associated invariant T (MAIT) cell activation
作者:Chriselle D. Braganza、Kensuke Shibata、Aisa Fujiwara、Chihiro Motozono、Koh-Hei Sonoda、Sho Yamasaki、Bridget L. Stocker、Mattie S. M. Timmer
DOI:10.1039/c9ob01436e
日期:——
MAIT cells revealed that the absence of the 2'-hydroxygroup on the sugar backbone of lumazines improved MR1-MAIT TCR binding, which could be rationalised using computational docking studies. Although none of the lumazines activated MAIT cells, all 5-OP-RU analogues showed significant MAIT cell activation, with several analogues exhibiting comparable activity to 5-OP-RU. Docking studies with the 5-OP-RU
Location, location, location: All the stereoisomers of 5‐OP‐RU were synthesized to elucidate the effects of its stereochemistry on MR1‐dependent MAIT cell activation. Of the stereoisomers, only the 4’‐OH epimer demonstrated potent MAIT cell activity, thus indicating that the configuration of the 2’‐OH and 3’‐OH group could be important for agonistic activity.
Platinum complexes of polyhydroxylated alkylamines and
申请人:American Cyanamid Company
公开号:US04587331A1
公开(公告)日:1986-05-06
Platinum complexes of polyhydroxylated alkylamines and 2-polyhydroxylated alkyl-1,2-diaminoethanes useful for inducing regression and/or palliation of cancer diseases in mammals.
聚羟基烷胺和2-聚羟基烷基-1,2-二胺乙烷的铂配合物可用于诱导哺乳动物癌症的退缩和/或缓解。
Iminosugars as Potential Inhibitors of Glycogenolysis: Structural Insights into the Molecular Basis of Glycogen Phosphorylase Inhibition
作者:Nikos G. Oikonomakos、Costas Tiraidis、Demetres D. Leonidas、Spyros E. Zographos、Marit Kristiansen、Claus U. Jessen、Leif Nørskov-Lauritsen、Loranne Agius
DOI:10.1021/jm060496g
日期:2006.9.1
been identified as potent inhibitors of liver glycogenphosphorylase a (IC(50) = 0.4-1.2 microM) and of basal and glucagon-stimulated glycogenolysis (IC(50) = 1-3 microM). The X-ray structures of 5, 9, and its N-3-phenylpropyl analogue 8 in complex with rabbit muscle glycogenphosphorylase (GPb) shows that iminosugars bind tightly at the catalyticsite in the presence of the substrate phosphate and