Combining two-directional synthesis and tandem reactions. Part 4: A concise approach to the spirocyclic core of halichlorine and the pinnaic acids
作者:Louise G. Arini、Peter Szeto、David L. Hughes、Robert A. Stockman
DOI:10.1016/j.tetlet.2004.09.058
日期:2004.11
A synthesis of the spirocyclic core structure of halichlorine, an inhibitor of the induced expression of VCAM-1 and the pinnaic acids, inhibitors of PLA2, is presented. A two-directional strategy is employed, in conjunction with a tandem oxime formation/Michael addition/cycloaddition to form the key azaspirocyclic skeleton in a very direct manner.
提出了盐酸的螺环核心结构的合成,盐酸是诱导的VCAM-1表达的抑制剂,而频那酸是PLA 2的抑制剂。采用双向策略,结合串联肟形成/迈克尔加成/环加成,以非常直接的方式形成关键的氮杂螺环骨架。