Synthesis and Biological Evaluation of (−) and (+)‐Spiroleucettadine and Analogues
作者:Michael P. Badart、Emma M. Barnes、Andrew P. Cording、Selena C. L. Gilmer、Ian D. Billinghurst、Veera V. Shivaji R. Edupuganti、Guillaume Lessene、Abigail R. Bland、Rebekah L. Bower、Zohaib Rana、Scott A. Ferguson、Helen K. Opel Reading、Gregory M. Cook、Rhonda J. Rosengren、Kurt L. Krause、Allan B. Gamble、John C. Ashton、Bill C. Hawkins
DOI:10.1002/cmdc.202000954
日期:2021.4.20
A second‐generation enantiospecific synthesis of spiroleucettadine is described. The original reported antibacterial activity was not observed when the experiment was repeated on the synthetic samples; however, significant anti‐proliferative activity was uncovered for both enantiomers of spiroleucettadine. Comparison of the optical rotational data and ORD‐CD spectra of both enantiomers and the reported
描述了第二代对映体特异性的螺环乙二胺合成。当对合成样品重复实验时,未观察到最初报告的抗菌活性;然而,对于螺环乙二胺的两种对映异构体,均未发现显着的抗增殖活性。两种对映异构体的旋光数据和 ORD-CD 光谱与来自天然来源的报道光谱的比较并没有为天然存在的螺环乙二胺的绝对立体化学提供明确的答案。然后,努力集中在活性稍高的 (-)-spioleucettadine 的 C-4 和 C-5 位置的改变上。合成了 10 种类似物,其中 3 种类似物对 H522 肺癌细胞系具有与螺环乙胺类似的抗增殖特性。