A Synthesis of Pseudoconhydrine and Its Epimer via Hydroformylation and Dihydroxylation
作者:Roderick W. Bates、K. Sivarajan、Bernd F. Straub
DOI:10.1021/jo2008912
日期:2011.8.19
A synthesis of the alkaloid pseudoconhydrine and its epimer has been achieved using tandem hydroformylation–condensation to form the six-membered ring and stereoselective dihydroxylation to introduce oxygenation. The stereoselectivity of dihydroxylation can be explained by lipophilic and electrostatic effects, supported by DFT calculations. The alkaloids can be obtained either by regioselective dehydroxylation
使用串联加氢甲酰化-缩合形成六元环和立体选择性二羟基化以引入氧合,已实现了生物碱假代水合碱及其差向异构体的合成。二羟基化的立体选择性可以通过亲脂性和静电效应来解释,并得到DFT计算的支持。生物碱可通过区域选择性脱羟基或通过重排,然后还原而获得。