Furanophane Transannular Diels−Alder Approach to (+)-Chatancin: An Asymmetric Total Synthesis of (+)-Anhydrochatancin
作者:András Toró、Pierre Deslongchamps
DOI:10.1021/jo034123o
日期:2003.9.1
(+)-anhydrochatancin was synthesized while attempting an enantioselective total synthesis of (+)-chatancin. The presented route constitutes the furanophane approach, one of the two ways of proposed biosynthesis which may involve transannular Diels-Alder (TADA) reaction to link this diterpene biogenetically to the furanocembranoids. Highlights of the synthetic work include the assembly of chiral, acyclic
尝试合成(+)-茶豆素的对映选择性全合成反应时,合成了(+)-脱水茶豆素。所提出的途径构成了呋喃烷方法,是所提出的生物合成的两种方法之一,可能涉及跨环的Diels-Alder(TADA)反应,以使该二萜生物上与呋喃类ran骨联系起来。合成工作的重点包括通过醛10和二硫代呋喃甲酸11的偶合组装手性,无环,三取代的呋喃28,通过闭环置换将其大环化为呋喃芬29E,达到四环中间体4的TADA反应和氢化物转移介导的氧转位作为对靶标的最终重排。很遗憾,