The synthesis of novel, highly functionalized, C 2-symmetric sulfur-based catalysts is developed and their catalytic applications are explored in asymmetric bromo-, iodo- and seleno-functionalizations of alkenoicacids. This protocol provides the corresponding normal- and medium-sized bromo, iodo and selenolactones in up to 98% yield and 83% stereoselectivity.
开发了新型、高度官能化的 C 2 对称硫基催化剂的合成,并探索了它们在烯酸的不对称溴、碘和硒官能化中的催化应用。该方案以高达 98% 的产率和 83% 的立体选择性提供相应的正常和中等大小的溴、碘和硒内酯。
Gossypol with Hydrophobic Linear Esters Exhibits Enhanced Antitumor Activity as an Inhibitor of Antiapoptotic Proteins
A series of gossypol Schiffbases that were derivedfrom unnatural linear amino acid methylesters were identified and found to be much more potent than gossypol and ABT-199 in terms of anticancer activity. This is the first example of gossypol Schiffbases with increased activity. The investigation of the Schiff base side chain of gossypol revealed that the unique anticancer effect was achieved by
APOPTOSIS-INDUCING AGENTS FOR THE TREATMENT OF CANCER AND IMMUNE AND AUTOIMMUNE DISEASES
申请人:Ding Hong
公开号:US20110237553A1
公开(公告)日:2011-09-29
Disclosed are compounds which inhibit the activity of anti-apoptotic Bcl-2 proteins, compositions containing the compounds and methods of treating diseases during which is expressed anti-apoptotic Bcl-2 protein.
Modification of aminoallenylidene complexes of chromium via exchange of the C3-bound amino group
作者:Normen Szesni、Bernhard Weibert、Helmut Fischer
DOI:10.1016/j.ica.2004.12.006
日期:2005.3
complexes [(CO) 5 Cr C C C(NR 1 R 2 )Ph] ( 1a – c ) react with dimethylamine by addition of the amine to the C1 C2 bond of the allenylidene ligand to give alkenyl(amino)carbene complexes [(CO) 5 Cr C(NMe 2 )CH C(NR 1 R 2 )Ph] ( 2a – c ) (R 1 = Me: R 2 = Me ( a ), Ph ( b ); R 1 = Et: R 2 = Ph ( c )). In contrast, addition of a large excess (usually 20 equivalents) of ammonia or primary amines, H 2NR, to solutions
Apoptosis-inducing agents for the treatment of cancer and immune and autoimmune diseases
申请人:Abbott Laboratories
公开号:US08188077B2
公开(公告)日:2012-05-29
Disclosed are compounds which inhibit the activity of anti-apoptotic Bcl-2 proteins, compositions containing the compounds and methods of treating diseases during which is expressed anti-apoptotic Bcl-2 protein.