Construction of Oxepino[3,2‐
<i>b</i>
]indoles via [4+3] Annulation of 2‐Ylideneoxindoles with Crotonate‐Derived Sulfur Ylides
作者:Xing‐Hai Fei、Yong‐Long Zhao、Fen‐Fen Yang、Xiang Guan、Zong‐Qin Li、Da‐Peng Wang、Meng Zhou、Yuan‐Yong Yang、Bin He
DOI:10.1002/adsc.202001580
日期:2021.6.21
A [4+3] annulation of 2-ylideneoxindoles with crotonate-derived sulfur ylides has been developed. A series of oxepino[3,2-b]indoles were prepared in moderate to excellent yields (62-93%) under mild conditions. Moreover, the synthetic oxepino[3,2-b] indoles can be further transformed into more complex cyclopropa[5,6]oxepino[3,2-b]indoles via a [2+1] cyclopropanation. In addition, the synthetic compounds
已经开发了 2-ylideneoxindoles 与巴豆酸盐衍生的硫叶立德的 [4+3] 环化。在温和的条件下,以中等至极好的收率 (62-93%) 制备了一系列 oxepino[3,2- b ] 吲哚。此外,合成的oxepino[3,2- b ]吲哚可以通过[2+1]环丙烷化进一步转化为更复杂的环丙[5,6]oxepino[3,2- b ]吲哚。此外,合成的化合物对K562和MCF-7细胞显示出一定的抗增殖活性,对这两种肿瘤细胞的IC 50值分别高达5.40±0.88 μM和18.41±0.50 μM。