0000000000131546
AUTHOR
Jean D'angelo
Stereocontrolled approach to quinuclidine derivatives
Abstract Asymmetric Michael-type cyclization of chiral enamino ester (S)-7 furnished the quinuclidinone derivative (3R, 4S)-5, with a high degree of stereoselectivity.
Mukaiyama-type, eight-membered ring closure: Access to a tricyclic system related to taxanes
Abstract Addition of Me2CuLi, with in situ trapping by TMSCl, to Hagemann's ester derivative 13, furnished silyl enol ether 14. Mukaiyama-type cyclization of the latter compound gave the tricyclic derivative 15, structurally related to the taxane core.