Pyrimido compounds having antiproliferative activity
申请人:——
公开号:US20040038995A1
公开(公告)日:2004-02-26
Disclosed are novel pyrimido compounds that are selective inhibitors of both KDR an FGFR kinases and are selective against LCK. These compounds and their pharmaceutically acceptable salts are anti-proliferative agents useful in the treatment or control of solid tumors, in particular breast, colon, lung and prostate tumors. Also disclosed are pharmaceutical compositions containing these compounds and methods of treating cancer.
A Convenient, One-Pot Procedure for the Preparation of Acyl and Sulfonyl Fluorides Using Cl3CCN, Ph3P, and TBAF(t-BuOH)4
作者:Doo Jang、Joong-Gon Kim
DOI:10.1055/s-0030-1259051
日期:2010.12
Various carboxylic acids were converted into acyl fluorides in excellent yields by treatment with trichloroacetonitrile, triphenylphosphine, and TBAF(t-BuOH) 4 at room temperature. The reaction was applicable to the preparation of acid-sensitive amino acid fluorides without deprotection or rearrangement.
A convenient, highly efficient, and selective transformation of aliphatic and aromatic carboxylicacids to acyl fluorides is reported. In contrast to established approaches that require toxic or volatile additives and base and reaction control (i.e., cooling, slow addition), this protocol allows for a straightforward access to various R-COF entities upon direct reaction with the bench-stable, solid
mercapto-functionalized cellulose membranes with preformed Fmoc-amino acid 3-bromopropyl esters yielded membrane-bound amino acids connected via a stable thioether and a cleavable ester bond. This synthesis strategy allows the highly parallel preparation of peptides that can be solubilized from the solidsupport. We apply this approach to the synthesis of novel peptide–cyanine dye conjugates which are
Pseudo-Prolines as a Solubilizing, Structure-Disrupting Protection Technique in Peptide Synthesis
作者:Torsten Wöhr、Franck Wahl、Adel Nefzi、Barbara Rohwedder、Tatsunori Sato、Xicheng Sun、Manfred Mutter
DOI:10.1021/ja961509q
日期:1996.1.1
in the C-2 position of the oxazolidine/thiazolidine ring system, this protection technique is adaptable to all common strategies in peptide synthesis. We describe new types of ΨPro building blocks suitable for standard Fmoc/tBu-based solidphase peptide synthesis, convergent strategies, and chemoselective ligation techniques as well as their use as a structure-disrupting, solubilizing protection technique