Parallel Synthesis of a Desketoraloxifene Analogue Library via Iodocyclization/Palladium-Catalyzed Coupling
摘要:
For a future structure-activity relationship (SAR) study, a library of desketoraloxifene analogues has been prepared by parallel synthesis using iodocyclization and subsequent palladium-catalyzed coupling reactions. Points of desketoraloxifene diversification involve the two phenolic hydroxyl groups and the aliphatic amine side chain. This approach affords oxygen bearing 3-iodobenzo[b]thiophenes 4 in excellent yields, which are easily further elaborated using a two-step approach involving Suzuki-Miyaura and Mitsunobu coupling reactions to give multimethoxy-substituted desketoraloxifene analogues 6. Various hydroxyl-substituted desketoraloxifene analogues 7 were subsequently generated by demethylation with BBr(3).
我们报告了通过使用手性恶唑啉助剂将原位生成的芳基锂和芳烃偶联来制备轴向立体富集的联苯。芳炔前体的设计、恶唑啉的选择和反应条件是获得所需的、高度取代的、富含阻转异构的二芳基产物的关键。在一种情况下,可以通过柱色谱分离和通过 X 射线晶体学建立的绝对构型以异构纯形式获得两种阻滞非对映体。反应的立体选择性似乎受微妙的参数控制。
The present invention relates to HSP90 inhibitors and their use in the treatment of cell proliferative diseases such as cancer. The said derivatives may further act as HDAC inhibitors.
The present invention relates to HSP90 inhibitors containing fused amino pyridine core that are useful as inhibitors of HSP90 and their use in the treatment of HSP90 related diseases and disorders such as cancer, an autoimmune disease, or a neurodegenerative disease.
A formal synthesis of (+)-steganone by means of atroposelective C–H activation is reported. The herein described strategy is very straightforward as the targeted scaffold is afforded in only 10 steps, amongst which five of them are conducted without isolation of the crude products. Accordingly, the final product is isolated in remarkable overall yield of 42,3% and with an enantiomeric excess above
FUSED AMINO PYRIDINES FOR THE TREATMENT OF BRAIN TUMORS
申请人:Cai Xiong
公开号:US20100184801A1
公开(公告)日:2010-07-22
The present invention relates to the use of compounds with fused amino pyridine core for the treatment of malignancies associated with brain and lung. The oral administration of compounds of the instant application results in effective brain penetration and provides for non-intrusive treatment of brain and lung tumors.