Stereocontrolled Total Synthesis of Potent Immunosuppressant FR901483
摘要:
A total synthesis of the potent immunosuppressant FR901483 (1) has been accomplished. The key feature of our convergent synthesis is the stereoselective incorporation of the p-methoxybenzyl and methylamino groups within the core moiety 10. Tricycle 10 was itself constructed by an intramolecular aldol reaction of the symmetrical keto-aldehyde 7.
<i>N</i>-Methoxy-<i>N</i>-acylnitrenium Ions: Application to the Formal Synthesis of (±)-Desmethylamino FR901483
作者:Duncan J. Wardrop、Wenming Zhang
DOI:10.1021/ol0161514
日期:2001.7.1
[reaction: see text] The formal synthesis of (+/-)-desmethylamino FR901483 (2) is described. Construction of the unique azatricyclic skeleton of 2 was accomplished by a sequence which involved (i) preparation of dienone 7 by an N-methoxy-N-acylnitrenium ion-induced spirocyclization, (ii) formation of 2-azabicyclo[3.3.1]nonane 5 by the 6-(pi-exo)-exo-trig radical cyclization of 1,7-enyne 6, and (iii)
作者:Tohru Fukuyama、Shigeru Ieda、Yusuke Asoh、Teppei Fujimoto、Haruka Kitaoka、Toshiyuki Kan
DOI:10.3987/com-08-s(d)38
日期:——
The total synthesis of potent immunosuppressant FR901483 (1) is reported. The remarkable feature of our convergent synthesis is the p-methoxybenzyl and methylamino groups are stereoselectively incorporated within the tri-cyclic core skeleton. The skeleton itself is constructed by an intramolecular aldol reaction on a symmetrical keto-aldehyde (14), which is readily derived by an eight-step sequence from nitromethane and methyl acrylate.