first-order kinetics and seems to be mainly an enthalpic process with a small negative activation entropy, as revealed by polarimetric measurements at low temperatures. This is in accordance with Cα–S bondrotation as the rate-determining step. The salts [R1C(R2)SO2tBu]Li have half-lives of racemization in the order of several hours at –105 °C. The deuteriation of the salts at –105 °C with CF3CO2D
Novel high affinity thiophene-based and furan-based kinase ligands
申请人:Deng Yongqi
公开号:US20070043045A1
公开(公告)日:2007-02-22
Inhibitors of cyclin dependent kinase 2, compositions including the inhibitors, and methods of using the inhibitors and inhibitor compositions are described. The inhibitors and compositions including them are useful for treating disease or disease symptoms. The invention also provides for methods of making CDK-2 inhibitor compounds, methods of inhibiting CDK-2, and methods for treating disease or disease symptoms.
Set of Geldanamycin Derivatives and Their Preparation Methods
申请人:Li Zhuorong
公开号:US20100311694A1
公开(公告)日:2010-12-09
A set of geldanamycin derivatives and their preparation methods. Pharmaceutical compositions comprising the said compounds as an active ingredient which are used as antivirus and antitumor agents. The said derivatives are used in the manufacture of heat shock protein 90 (Hsp 90) inhibiting agents which have the utility as antivirus and antitumor agents.
Disclosed are compounds of formula (I):
wherein R1 and R2 are defined herein, which are useful as inhibitors of the kinase activity of the IκB kinase (IKK) complex. The compounds are therefore useful in the treatment of IKK mediated diseases including autoimmune diseases inflammatory diseases and cancer. Also disclosed are pharmaceutical compositions comprising these compounds and processes for preparing these compounds.