Synthesis and Cytotoxicity Evaluation of C4- and C5-Modified Analogues of the α,β-Unsaturated Lactone of Pironetin
作者:David S. Huang、Henry L. Wong、Gunda I. Georg
DOI:10.1002/cmdc.201700084
日期:2017.4.6
addition into the natural product's α,β-unsaturated lactone. Although pironetin's α,β-unsaturated lactone is involved in its binding to tubulin, the structure-activity relationship at different positions of the lactone have not been thoroughly evaluated. For a systematic evaluation of the structure-activity relationships at the C4 and C5 positions of the α,β-unsaturated lactone of pironetin, twelve analogues
吡咯丁酮是具有有效抗增殖活性的天然产物,可通过将缀合物加到天然产物的α,β-不饱和内酯中而与α-微管蛋白形成共价加合物。尽管吡咯丁酮的α,β-不饱和内酯参与了其与微管蛋白的结合,但是尚未充分评估内酯在不同位置的结构-活性关系。为了系统评价吡咯丁酮的α,β-不饱和内酯在C4和C5位的结构-活性关系,通过全合成制备了十二种天然产物的类似物。改变吡咯丁酮的α,β-不饱和内酯的C4和/或C5位置处的立体化学导致OVCAR5卵巢癌细胞中抗增殖活性的丧失。在用甲基等基团更改C4乙基取代基的同时,