General Strategy for the Synthesis of B<sub>1</sub> Phytoprostanes, Dinor Isoprostanes, and Analogs
作者:Annika Schmidt、Wilhelm Boland
DOI:10.1021/jo062359x
日期:2007.3.1
The synthesis of the phytoprostane B1 types I and II is achieved in high overall yield (35−53%) by only two principal transformations starting from 1,3-cyclopentanedione. The first side chain is attached via O-acylation of the 1,3-dione followed by rearrangement and reduction to give the 2-alkyl-1,3-diones 4a−c. After conversion into the corresponding vinylic iodides 5a−c, the second side chain is
从1,3-环戊二酮开始仅进行两次主要转化,即可以高总收率(35-53%)实现植物前列腺素B 1和II的合成。第一侧链通过1,3-二酮的O-酰化连接,然后重排和还原得到2-烷基-1,3-二酮4a - c。在转化为相应的乙烯基碘化物5a - c之后,第二条侧链通过遵循Heck或Sonogashira类型规程的过渡金属催化引入。所述phytoprostane B的全谱1种类型I,II,和DINOR异前列腺乙1 沿相同的通用协议可快速访问III型和某些结构类似物。