15元环环肽生物碱Asssenine A 1的首次全合成已通过15个步骤的最长线性序列完成。合成方法的核心是有效的铜介导的Ullmann偶联/ Claisen重排序列,可同时对芳香族碘化物4进行ipso和邻位官能化。该序列用于芳族核的合成。进一步证明了铜催化的偶联反应的合成效用,以从无环α-酰胺基-ω-乙烯基碘化物13开始的伴随的直接大环化安装烯酰胺。
15元环环肽生物碱Asssenine A 1的首次全合成已通过15个步骤的最长线性序列完成。合成方法的核心是有效的铜介导的Ullmann偶联/ Claisen重排序列,可同时对芳香族碘化物4进行ipso和邻位官能化。该序列用于芳族核的合成。进一步证明了铜催化的偶联反应的合成效用,以从无环α-酰胺基-ω-乙烯基碘化物13开始的伴随的直接大环化安装烯酰胺。
Quinazolinone, triazolinone and pyrimidinone angiotensin II antagonists
申请人:Merck & Co., Inc.
公开号:US05264439A1
公开(公告)日:1993-11-23
Substituted heterocycles attached through a methylene bridge to novel substituted phenyl derivatives of the Formula I are useful as angiotensin II antagonists. ##STR1##
通过一个亚甲基桥连接到新的取代苯基衍生物的取代杂环对式I的化合物可作为血管紧张素II拮抗剂。
Quinazolinones substituted with phenoxyphenylacetic acid derivatives
申请人:Merck & Co., Inc.
公开号:US05401745A1
公开(公告)日:1995-03-28
Phenoxyphenylacetic acids and derivatives of general structural formula I ##STR1## have endothelin antagonist activity and are therefore useful in treating cardiovascular disorders, such as hypertension, postischemic renal failure, vasospasm, cerebal and cardiac ischemia, myocardial infarction, inflammatory diseases, Raynaud's disease, and endotoxic shock, and asthma.
Total Synthesis of the Cyclopeptide Alkaloid Abyssenine A. Application of Inter- and Intramolecular Copper-Mediated Coupling Reactions in Organic Synthesis
作者:Mathieu Toumi、François Couty、Gwilherm Evano
DOI:10.1021/jo070517u
日期:2007.11.1
longest linear sequence of 15 steps. Central to the synthetic approach was an efficient copper-mediated Ullmanncoupling/Claisen rearrangement sequence allowing for both ipso and ortho functionalization of aromatic iodide 4. This sequence was used for the synthesis of the aromatic core. The synthetic utility of copper-catalyzedcoupling reactions was further demonstrated to install the enamide with
15元环环肽生物碱Asssenine A 1的首次全合成已通过15个步骤的最长线性序列完成。合成方法的核心是有效的铜介导的Ullmann偶联/ Claisen重排序列,可同时对芳香族碘化物4进行ipso和邻位官能化。该序列用于芳族核的合成。进一步证明了铜催化的偶联反应的合成效用,以从无环α-酰胺基-ω-乙烯基碘化物13开始的伴随的直接大环化安装烯酰胺。