Two water-soluble 3(10)-helical peptides are synthesized and fully characterized for the first time. The sequence of these terminally blocked heptamers comprises two residues of the Calpha-trisubstituted alpha-amino acid 2-amino-3-[1-(1,4,7-triazacyclononyl)]propanoic acid and five residues of a Calpha-tetrasubstituted alpha-amino acid (either alpha-aminoisobutyric acid or isovaline). Using CD and NMR techniques we were able to show that both heptapeptides are well structured in water, and that the type of conformation adopted is indeed the ternary 3(10)-helix.
Structure-based design, synthesis, and biological evaluation of 1,1-dioxoisothiazole and benzo[b]thiophene-1,1-dioxide derivatives as novel inhibitors of hepatitis C virus NS5B polymerase
作者:Sun Hee Kim、Martin T. Tran、Frank Ruebsam、Alan X. Xiang、Benjamin Ayida、Helen McGuire、David Ellis、Julie Blazel、Chinh V. Tran、Douglas E. Murphy、Stephen E. Webber、Yuefen Zhou、Amit M. Shah、Mei Tsan、Richard E. Showalter、Rupal Patel、Alberto Gobbi、Laurie A. LeBrun、Darian M. Bartkowski、Thomas G. Nolan、Daniel A. Norris、Maria V. Sergeeva、Leo Kirkovsky、Qiang Zhao、Qing Han、Charles R. Kissinger
DOI:10.1016/j.bmcl.2008.05.083
日期:2008.7
A novel series of HCV NS5B polymerase inhibitors comprising 1,1-dioxoisothiazoles and benzo[b]thiophene-1,1-dioxides were designed, synthesized, and evaluated. SAR studies guided by structure-based design led to the identification of a number of potent NS5B inhibitors with nanomolar IC(50) values. The most potent compound exhibited IC(50) less than 10nM against the genotype 1b HCV polymerase and EC(50)
This invention relates to new compositions comprising predominantly one enantiomer of an N-acetonylbenzamide fungicide, methods of preparing N-acetonylbenzamides, and their use as fungicides.
The invention relates to compounds of the formula I:
in which R1, R2, X, A, B, D and Y1 to Y4 have the meanings indicated in the claims, and/or a pharmaceutically acceptable salt and/or a prodrug thereof. Because of their properties as inhibitors of chemokine receptors, especially as CXCR2 inhibitors, the compounds of the formula I and the pharmaceutically acceptable salts and prodrugs thereof are suitable for the prevention and treatment of chemokine mediated diseases.
The invention relates to compounds of the formula I:
in which R1, R2, X, A, B, D and Y1 to Y4 have the meanings indicated in the claims, and/or a pharmaceutically acceptable salt and/or a prodrug thereof. Because of their properties as inhibitors of chemokine receptors, especially as CXCR2 inhibitors, the compounds of the formula I and the pharmaceutically acceptable salts and prodrugs thereof are suitable for the prevention and treatment of chemokine mediated diseases.