1-Acyl-1H-[1,2,4]triazole-3,5-diamine Analogues as Novel and Potent Anticancer Cyclin-Dependent Kinase Inhibitors: Synthesis and Evaluation of Biological Activities
摘要:
A series of 1-acyl-1H-[1,2,4]triazole-3,5-diamine analogues were synthesized as cyclin-dependent kinase (CDK) inhibitors. These compounds showed potent and selective CDK1 and CDK2 inhibitory activities and inhibited in vitro cellular proliferation in various human tumor cells. Representative compound 3b demonstrated in vivo efficacy in a human melanoma A375 xenograft model in nude mice.
Artificial Transfer Hydrogenases Based on the Biotin−(Strept)avidin Technology: Fine Tuning the Selectivity by Saturation Mutagenesis of the Host Protein
摘要:
Incorporation of biotinylated racemic three-legged d(6)-piano stool complexes in streptavidin yields enantioselective transfer hydrogenation artificial metalloenzymes for the reduction of ketones. Having identified the most promising organometallic catalyst precursors in the presence of wild-type streptavidin, fine-tuning of the selectivity is achieved by saturation mutagenesis at position S112. This choice for the genetic optimization site is suggested by docking studies which reveal that this position lies closest to the biotinylated metal upon incorporation into streptavidin. For aromatic ketones, the reaction proceeds smoothly to afford the corresponding enantioenriched alcohols in up to 97% ee (R) or 70% (S). On the basis of these results, we suggest that the enantioselection is mostly dictated by CH/pi interactions between the substrate and the eta(6)-bound arene. However, these enantiodiscriminating interactions can be outweighed in the presence of cationic residues at position S112 to afford the opposite enantiomers of the product.
SUBSTITUTED CINNAMIC, ACID GUANIDIDES, PROCESS FOR THEIR PREPARATION, THEIR USE AS A MEDICAMENT, AND MEDICAMENT COMPRISING THEM
申请人:Aventis Pharma Deutschland GmbH.
公开号:US20020058710A1
公开(公告)日:2002-05-16
Substituted cinnamic acid guanidides, process for their preparation, their use as a medicament or diagnostic, and medicament comprising them. Compounds of the
1
, which may be obtained by reaction of a compound II
2
with guanidine.
Thiazolidinones, their production and use as pharmaceutical agents
申请人:Siemeister Gerhard
公开号:US20070037862A1
公开(公告)日:2007-02-15
Thiazolidinones of general formula I
in which Q, A, B, X, R
1
and R
2
have the meanings that are indicated in the description, as well as those of general formula IA
in which Q, A, B, X, R
1
and R
2a
have the meanings that are indicated in the description, their production and use as inhibitors of the polo-like kinase (PLK) for treating various diseases as well as intermediate products for the production of thiazolidinones are described.
A compound of the formula
1
wherein R
1
, R
2
and R
3
are as defined above, useful as inhibitors of protein kinases, such as the enzyme Janus Kinase 3.
一种具有上述定义的R1、R2和R3的化合物,用作蛋白激酶抑制剂,例如酶Janus激酶3。
Pyrrolo[2,3-D]pyrimidine compounds
申请人:Blumenkopf A. Todd
公开号:US20050197349A1
公开(公告)日:2005-09-08
A compound of the formula
wherein R
1
, R
2
and R
3
are as defined above, useful as inhibitors of protein kinases, such as the enzyme Janus Kinase 3.
Indolinones substituted by heterocycles, the preparation thereof and their use as medicaments
申请人:Kley Joerg
公开号:US20050054710A1
公开(公告)日:2005-03-10
The present invention relates to heterocyclically substituted indolinones of general formula
wherein
R
1
to R
5
and X are defined as in claim 1, the tautomers, the diastereomers, the enantiomers, the mixtures thereof, the prodrugs thereof and the salts thereof, particularly the physiologically acceptable salts thereof which have valuable pharmacological properties, in particular an inhibiting effect on various receptor tyrosine kinases and cyclin/CDK complexes and on the proliferation of endothelial cells and various tumour cells, pharmaceutical compositions containing these compounds, their use and processes for preparing them.