Disclosed are &bgr;-amino acid monomers containing cylcoalkyl, cycloalkenyl, and heterocylic substituents which encompass the &agr; and &bgr; carbons of the peptide backbone and &bgr;-polypeptides made from such monomers. Method of generating combinatorial libraries of polypeptides containing the &bgr;-peptide residues and libraries formed thereby are disclosed.
Beta-polypeptides that inhibit cytomegalovirus infection
申请人:Compton Teresa
公开号:US20070154882A1
公开(公告)日:2007-07-05
Disclosed are beta-polypeptides that mimic the coiled-coil regions of gB and gH by display of the key hydrophobic residues for coiled-coil packing along one face of beta-polypeptide 12-helix. The most potent inhibitor blocks infection of CMV with an IC
50
of approximately 20 m.
Disclosed are β-amino acid monomers containing cylcoalkyl, cycloalkenyl, and heterocylic substituents which encompass the α and β carbons of the peptide backbone and β-polypeptides made from such monomers. Method of generating combinatorial libraries of polypeptides containing the β-peptide residues and libraries formed thereby are disclosed.
Davies Stephen G., Ichihara Osamu, Walters Iain A. S., J. Chem. Soc. Perkin. Trans. 1, (1994) N 9, S 1141- 1147
作者:Davies Stephen G., Ichihara Osamu, Walters Iain A. S.
DOI:——
日期:——
Dolastatin 11 conformations, analogues and pharmacophore
作者:Md. Ahad Ali、Robert B. Bates、Zackary D. Crane、Christopher W. Dicus、Michelle R. Gramme、Ernest Hamel、Jacob Marcischak、David S. Martinez、Kelly J. McClure、Pichaya Nakkiew、George R. Pettit、Chad C. Stessman、Bilal A. Sufi、Gayle V. Yarick
DOI:10.1016/j.bmc.2005.04.040
日期:2005.7
Twenty analogues of the natural antitumor agent dolastatin 11, including majusculamide C, were synthesized and tested for cytotoxicity against human cancer cells and stimulation of actin polymerization. Only analogues containing the 30-membered ring were active. Molecular modeling and NMR evidence showed the low-energy conformations. The amide bonds are all trans except for the one between the Tyr and Val units, which is cis. Since an analogue restricted to negative 2-3-4-5 angles stimulated actin polymerization but was inactive in cells, the binding conformation (most likely the lowest-energy conformation in water) has a negative 2-3-4-5 angle, whereas a conformation with a positive 2-3-4-5 angle (most likely the lowest energy conformation in chloroform) goes through cell walls. The highly active R alcohol from borohydride reduction of dolastatin I I is a candidate for conversion to prodrugs. (c) 2005 Elsevier Ltd. All rights reserved.