介绍了环Sal-核苷酸方法的概念扩展。抗 HIV 活性核苷类似物 d4T 1 的新环盐衍生物的特征是掺入了可酶切的羧酸酯部分,目的是将三酯捕获在细胞内(“锁定”概念)。描述了在环Sal部分的3-或5-位带有不同酯基的环Sal-三酯。令人惊讶的是,只有乙酰基酯和乙酰丙酸酯在 CEM 细胞提取物中容易裂解,而烷基酯被发现是稳定的。尽管如此,在体外抗 HIV 检测中,大多数化合物实现了胸苷激酶旁路,从而证明它们至少充当核苷酸传递系统。†为了纪念和庆祝 Leroy B. Townsend 教授 70 岁生日。
Regioselective synthesis of benzimidazole thiophene inhibitors of polo-like kinase 1
作者:Keith R. Hornberger、Jennifer G. Badiang、James M. Salovich、Kevin W. Kuntz、Kyle A. Emmitte、Mui Cheung
DOI:10.1016/j.tetlet.2008.08.077
日期:2008.10
of novel 1-(2-thienyl)-benzimidazole inhibitors of polo-like kinase 1 is described. Amination of substituted 2-iodo or -bromo nitrobenzenes with a 2-aminothiophene derivative catalyzed by Pd2dba3 and XANTPHOS in the presence of excess Cs2CO3 afforded good yields of the coupled products. Subsequent reduction and cyclization of these intermediates provided the desired benzimidazole compounds.
描述了新的1-(2-噻吩基)-苯并咪唑抑制剂的马球样激酶1的区域选择性合成。在过量的Cs 2 CO 3存在下,用Pd 2 dba 3和XANTPHOS催化的2-氨基噻吩衍生物对取代的2-碘或-溴硝基苯进行胺化,可得到良好的偶联产物收率。这些中间体的随后还原和环化提供了所需的苯并咪唑化合物。
Dynemicin analogs: syntheses, methods of preparation and use
申请人:The Scripps Research Institute
公开号:US05276159A1
公开(公告)日:1994-01-04
A fused ring system compound is disclosed that contains an epoxide group on one side of the fused rings and an enediyne macrocyclic ring on the other side of the fused rings. The compounds have DNA-cleaving, antimicrobial and tumor growth-inhibiting properties. Chimeric compounds having the fused ring system compound as an aglycone bonded to (i) a sugar moiety as the oligosaccharide portion or (ii) a monoclonal antibody or antibody combining site portion thereof that immunoreacts with target tumor cells are also disclosed. Compositions containing a compound or a chimer are disclosed, as are methods of preparing a compound.
Dynemicin analogs: synthesis, methods of preparation and use
申请人:The Scripps Research Institute
公开号:US05281710A1
公开(公告)日:1994-01-25
A fused ring system compound is disclosed that contains an epoxide group on one side of the fused rings and an enediyne macrocyclic ring on the other side of the fused rings. The compounds have DNA-cleaving, antimicrobial and tumor growth-inhibiting properties. Chimeric compounds having the fused ring system compound as an aglycone bonded to (i) a sugar moiety as the oligosaccharide portion or (ii) a monoclonal antibody or antibody combining site portion thereof that immunoreacts with target tumor cells are also disclosed. Compositions containing a compound or a chimer are disclosed, as are methods of preparing a compound.
Molecular design and chemical synthesis of potent enediynes. 2. Dynemicin model systems equipped with C-3 triggering devices and evidence for quinone methide formation in the mechanism of action of dynemicin A
作者:K. C. Nicolaou、W. M. Dai
DOI:10.1021/ja00049a023
日期:1992.11
synthesis and chemical properties of designed enediynes related to dynemicin A. These modelsystems are equipped with triggering devices at C-3 of the aromatic nucleus. The design of these compounds (1 and 2) was based on the hypothesis that a C-3 phenolic group generated in situ would be capable of promoting epoxide opening and subsequent Bergman cycloaromatization according to the dynemicin A cascade
继续上一篇文章的主题,本文描述了与动力霉素 A 相关的设计烯二炔的合成和化学性质。这些模型系统在芳环的 C-3 处配备了触发装置。这些化合物(1 和 2)的设计基于这样一个假设,即原位生成的 C-3 酚基能够促进环氧化物开放和随后的 Bergman 环芳构化,根据 dynemicin A 级联
Benzimidazole Thiophene Compounds
申请人:Kuntz Kevin
公开号:US20080300247A1
公开(公告)日:2008-12-04
The present invention provides benzimidazole thiophene compounds pharmaceutical compositions containing the same, processes for preparing the same and their use as pharmaceutical agents.