Studies on Development of Sufficiently Chemoselective N-Acylation Reagents: N-Acyl-N-(2,3,4,5,6-pentafluorophenyl)methanesulfonamides
摘要:
A variety of storable N-acyl-N-(2,3,4,5,6-pentafluorophenyl)met (4a-e) prepared from N-2,3,4,5,6-pentafluorophenylmethanesulfonamide (3), have been developed after systematic research on the structure-reactivity relationship and were found to serve as N-acylation reagents exhibiting sufficiently good chemoselectivity. (C) 2000 Elsevier Science Ltd. All rights reserved.
Combinatorial synthesis and biological evaluation of Library of small-molecule Ser/Thr-protein phosphatase inhibitors
作者:Peter Wipf、April Cunningham、Robert L. Rice、John S. Lazo
DOI:10.1016/s0968-0896(96)00199-x
日期:1997.1
In eukaryotes, phosphorylation of serine, threonine, and tyrosine residues on proteins is a fundamental posttranslational regulatory process for such functions as signal transduction, gene transcription, RNA splicing, cellular adhesion, apoptosis, and cell cycle control. Based on functional groups present in natural product serine/threonine protein phosphatase (PSTPase) inhibitors, we have designed pharmacophore model 1 and demonstrated the feasibility of a combinatorial chemistry approach for the preparation of functional analogues of 1. preliminary biological testing of 18 structural variants of 1 has identified two compounds with growth inhibitory activity against cultured human breast cancer cells. In vitro inhibition of the PSTPase PP2A was demonstrated with compound 1d. Using flow cytometry we observed that compound If caused prominent inhibition in the G1 phase of the cell cycle. Thus, the combinatorial modifications of the minimal pharmacophore 1 can generate biologically interesting antiproliferative agents. Copyright (C) 1997 Elsevier Science Ltd.
Studies on Development of Sufficiently Chemoselective N-Acylation Reagents: N-Acyl-N-(2,3,4,5,6-pentafluorophenyl)methanesulfonamides
A variety of storable N-acyl-N-(2,3,4,5,6-pentafluorophenyl)met (4a-e) prepared from N-2,3,4,5,6-pentafluorophenylmethanesulfonamide (3), have been developed after systematic research on the structure-reactivity relationship and were found to serve as N-acylation reagents exhibiting sufficiently good chemoselectivity. (C) 2000 Elsevier Science Ltd. All rights reserved.
Identification of new Cdc25 dual specificity phosphatase inhibitors in a targeted small molecule array
作者:Alexander P Ducruet、Robert L Rice、Kenji Tamura、Fumiaki Yokokawa、Shiho Yokokawa、Peter Wipf、John S Lazo
DOI:10.1016/s0968-0896(00)00069-9
日期:2000.6
phosphatase inhibitors (Rice, R. L.; Rusnak, J. M.; Yokokawa, F.; Yokokawa, S.; Messner, D. J.; Boynton, A. L.; Wipf, P.; Lazo, J. S. Biochemistry 1997, 36, 15965). Several analogues were identified as effective inhibitors of the protein tyrosine phosphatase (PTPase) PTP1B and the DSPases VHR and Cdc25B2. Two compounds, FY3-alphaalpha09 and FY21-alphaalpha09, were partial competitive inhibitors of Cdc25B2