Template-Directed C−H Insertion: Synthesis of the Dioxabicyclo[3.2.1]octane Core of the Zaragozic Acids
作者:Duncan J. Wardrop、Adriana I. Velter、Raymond E. Forslund
DOI:10.1021/ol0158361
日期:2001.7.1
preparation of (+/-)-24, a model for the core of the zaragozicacids, is reported. The pivotal reaction in this endeavor is the dirhodium(II)-catalyzed intramolecular C-H bond insertion of 2-diazoacetyl-1,3-dioxane 4, a transformation which generates four of the six stereocenters present in the core structure. A novel method for the diastereoselective synthesis of pyruvic acid acetals was also developed and
Template-directed CH activation: development and application to the total synthesis of 7-episordidin
作者:Duncan J Wardrop、Raymond E Forslund、Chad L Landrie、Adriana I Velter、Donald Wink、Bushan Surve
DOI:10.1016/s0957-4166(03)00091-0
日期:2003.4
The development of a template-directed C-H activation strategy and its application to the diastereoselective synthesis of (+/-)-7-episordidin, an aggregation pheromone from the male banana weevil, Cosmopolites sordidus Germar, is reported. The key step of the synthetic route is a regioselective rhodium(II)-catalyzed diazocarbonyl C-H activation reaction that simultaneously generates three of the four stereocenters present in the natural product. (C) 2003 Elsevier Science Ltd. All rights reserved.