1579957-31-5Relevant articles and documents
Hydrogen-bond-directed formal [5 + 1] annulations of oxindoles with ester-linked bisenones: Facile access to chiral spirooxindole δ-lactones
Zhao, Shuai,Lin, Jun-Bing,Zhao, Yuan-Yuan,Liang, Yong-Min,Xu, Peng-Fei
supporting information, p. 1802 - 1805 (2014/04/17)
A novel bifunctional thiourea catalyzed formal [5 + 1] cycloaddition of oxindoles and ester-linked bisenones was successfully developed. This strategy involves two sequential Michael additions, leading to spirooxindole δ-lactones with three contiguous ste