Induction of apoptosis promoted by Bang52; a small molecule that downregulates Bcl-xL
摘要:
Cancer cells evade death by over-producing specific proteins that inhibit apoptosis. One such group of proteins is the Bcl-2 family, of which Bcl-x(L) is an important member. This protein binds and inhibits BAK, another protein that promotes apoptosis. While the development of chemical inhibitors that block Bcl-x(L)-BAK association have been the focus of intense research efforts, we demonstrate in this manuscript an alternative strategy to downregulate Bcl-x(L). We have identified a small molecule (Bang52) that induces apoptosis in a lymphoblast-derived cell line by lowering levels of Bcl-x(L). Since Bang52 bears no resemblance to any chemical binder of Bcl-x(L) we believe that degradation of the protein is stimulated by a new type of pathway. These findings highlight a novel approach to the development of small molecules that promote apoptosis. (c) 2009 Elsevier Ltd. All rights reserved.
Induction of apoptosis promoted by Bang52; a small molecule that downregulates Bcl-xL
摘要:
Cancer cells evade death by over-producing specific proteins that inhibit apoptosis. One such group of proteins is the Bcl-2 family, of which Bcl-x(L) is an important member. This protein binds and inhibits BAK, another protein that promotes apoptosis. While the development of chemical inhibitors that block Bcl-x(L)-BAK association have been the focus of intense research efforts, we demonstrate in this manuscript an alternative strategy to downregulate Bcl-x(L). We have identified a small molecule (Bang52) that induces apoptosis in a lymphoblast-derived cell line by lowering levels of Bcl-x(L). Since Bang52 bears no resemblance to any chemical binder of Bcl-x(L) we believe that degradation of the protein is stimulated by a new type of pathway. These findings highlight a novel approach to the development of small molecules that promote apoptosis. (c) 2009 Elsevier Ltd. All rights reserved.
[EN] INHIBITORS OF AKT ACTIVITY<br/>[FR] INHIBITEURS DE L'ACTIVITE D'AKT
申请人:MERCK & CO INC
公开号:WO2005100356A1
公开(公告)日:2005-10-27
The present invention is directed to compounds which contain substituted napthyridines which inhibit the activity of Akt, a serine/threonine protein kinase. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for treating cancer comprising administration of the compounds of the invention.
The chiral cationic rhodium aminophosphine-phosphinite complexes 4-6 were applied successfully in the asymmetric hydrogenation of α- (7-9), β- (10, 11) and γ- (12) aminoketone hydrochloride derivatives leading to the corresponding aminoalcohols in up to 97, 93, and 92 % enantiomeric excesses for the three types of substrates respectively.
The present invention is directed to compounds which contain substituted napthyridines which inhibit the activity of Akt, a serine/threonine protein kinase. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for treating cancer comprising administration of the compounds of the invention.
The present invention is directed to compounds which contain substituted napthyridines which inhibit the activity of Akt, a serine/threonine protein kinase. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for treating cancer comprising administration of the compounds of the invention.
(triflic acid, TfOH) if the Lewisbase P4O10 is added. Here we describe the Friedel–Crafts acylation reactions of anthranilic acid and α- to δ-aminocarboxylic acids with benzene derivatives in the presence of P4O10. Non-amino-containing carboxylic acids as well as N-containing heteroaromatic carboxylic acids are available, and α-amino acids can be directly utilized without any protective group. Most substrates
氨基羧酸中的氨基具有足够的碱性,可以在强酸中质子化,因此,由于电荷-电荷排斥,羧酸向酰基离子的电离被阻止。因此,芳香族化合物的酰化在 Friedel-Craft 型反应中显着延迟。我们发现,如果添加路易斯碱 P 4 O 10 ,即使在强布朗斯台德酸(三氟甲磺酸,TfOH)中,氨基羧酸的 Friedel-Crafts 酰化也可以顺利进行。在这里,我们描述了邻氨基苯甲酸和 α- 到 δ-氨基羧酸与苯衍生物在 P 4 O 10存在下的 Friedel-Crafts 酰化反应. 既有不含氨基的羧酸,也有含N的杂芳族羧酸,α-氨基酸可直接使用,无需任何保护基团。尽管可能会发生一些差向异构化/外消旋化,但大多数底物都能提供高产率的酰化产物。密度泛函理论 (DFT) 计算表明 P 4 O 10中和质子化胺,将 N-H 共价键转化为 N-氢键,并使羧酸 OH 官能团充当良好的离去基团。