Stereocontrolled [3+2] Cycloaddition of Donor–Acceptor Cyclopropanes to Iminooxindoles: Access to Spiro[oxindole-3,2′-pyrrolidines]
作者:Andrey A. Akaev、Stanislav I. Bezzubov、Victor G. Desyatkin、Nataliya S. Vorobyeva、Alexander G. Majouga、Mikhail Ya. Melnikov、Ekaterina M. Budynina
DOI:10.1021/acs.joc.8b03208
日期:2019.3.15
with ester, keto, nitro, cyano etc. groups, and N-unprotected iminooxindoles. The stereospecificity of the initial SN2-like imine attack on a cyclopropane molecule together with a high diastereoselectivity of further C–C bond formation facilitate a rapid access to spiro[oxindole-3,2′-pyrrolidines] in their optically active forms. Preliminary in vitro testing of the synthesized compounds against LNCaP
通过将供体-受体环丙烷的[3 + 2]-环加成到电子贫乏的酮亚胺(亚氨基氧吲哚)上,开发了螺环[oxindole-3,2'-吡咯烷]的新型立体控制组装。该方法可有效利用常用的供体-受体环丙烷,它们经酯,酮,硝基,氰基等基团和N-未保护的亚氨基吲哚官能化。最初的S N 2样亚胺攻击环丙烷分子的立体定向性以及进一步C-C键形成的高非对映选择性,有助于快速接近其光学活性形式的螺[oxindole-3,2'-吡咯烷]。初步体外 对合成的化合物针对LNCaP(p53 +)和PC-3(p53-)细胞的测试显示,对于几种化合物作为MDM2-p53相互作用的抑制剂,它们具有很好的抗增殖活性和p53选择性指数。