Improved synthesis of quinine alkaloids with the Teoc protective group
作者:Junji Igarashi、Yuichi Kobayashi
DOI:10.1016/j.tetlet.2005.06.171
日期:2005.9
TeocCl (Teoc: C(=O)O(CH2)(2)TMS) generated in situ was conveniently used for trans-protection of the N-Bn piperidine intermediate to N-Teoc piperidine. Later, deprotection of the Teoc group and the subsequent quinuclidine ring formation was achieved with CsF in a domino fashion to afford the quinine alkaloids. (c) 2005 Elsevier Ltd. All rights reserved.
Total Asymmetric Synthesis of Quinine, Quinidine, and Analogues via Catalytic Enantioselective Cascade Transformations
A catalytic asymmetric strategy for the total synthesis of quinuclidine natural products, which includes the completed enantioselective synthesis of the classical targets quinine and quinidine is d ...