The construction of novel borrelidin analogues is reported in which the northern fragment is truncated to a simple hydroxyundecanecarboxylate and the original cyclopentanecarboxylic acid in the southern fragment is replaced with different six-membered rings. The required precursors were prepared by cross metathesis of the appropriate carbocycle-based homoallylic alcohol with crotonaldehyde followed
据报道,新颖的
硼瑞林类似物的构建,其中北部片段被截短为简单的羟基
十一烷羧酸酯,而南部片段中的原始
环戊烷羧酸被不同的六元环取代。所需的前体是通过适当的基于碳环的均烯丙基醇与
巴豆醛的交叉复分解,然后将所得的烯醛与
溴氰基膦酸酯进行HWE烯化而制备的。分子内交叉偶联的关键醛可通过连接的十一碳烷酸酯单元的羟基氧化而获得。格利雅(Grignard)介导的大环化最终产生了
硼瑞林相关产品。这项研究得到了
SAR研究和量子
化学计算的补充。