Cyclization of Peptides by using Selenolanthionine Bridges
作者:Aline Dantas de Araujo、Mehdi Mobli、Glenn F. King、Paul F. Alewood
DOI:10.1002/anie.201204229
日期:2012.10.8
Selenocysteine does the job: Lanthionine bridges are important structural elements in naturally occurring lantibiotics. They can be engineered into peptides to increase biological activity and metabolic stability. Macrocyclization of peptides by intramolecular thiolation of cysteine is often difficult but can be achieved by replacing cysteine with the more reactive isosteric selenocysteine amino acid
The present invention relates to compounds of the formula
methods for the preparation thereof, and methods for their use. The compounds are useful in treating diseases characterized by the hyperactivity of MEK. Accordingly the compounds are useful in the treatment of diseases, such as cancer, cognitive and CNS disorders, and inflammatory/autoimmune diseases.
METHOD FOR INHIBITING PROLIFERATION OF TUMOR CELLS
申请人:Niu Huifeng
公开号:US20080207563A1
公开(公告)日:2008-08-28
Disclosed are methods for synergistically inhibiting the proliferation of tumor cells by contacting the tumor cells with a MEK inhibitor compound and erlotinib, either sequentially or simultaneously. Also disclosed are methods for inhibiting the proliferation of tumor cells in a human, by administering to the human, sequentially or simultaneously, an amount of erlotinib and a MEK inhibitor compound, wherein the amounts are effective, in combination, to synergistically inhibit the proliferation of the tumor cells in the human.
Chloroalanyl and propargylglycyl dipeptides. Suicide-substrate-containing antibacterials
作者:Kam Sing Cheung、Steven A. Wasserman、Edward Dudek、Stephen A. Lerner、Michael Johnston
DOI:10.1021/jm00366a015
日期:1983.12
A set of dipeptidescontaining the amino acid residues beta-chloroalanine and propargylglycine, which are mechanism-based inactivators of purified microbial enzymes (alanine racemase and cystathionine gamma-synthase, respectively), have been synthesized, and their antibacterial properties in vitro have been evaluated. Dipeptidescontaining a single beta-chloro-L-alanyl residue (e.g., 3, 5, 9, and 10)