作者:Marta Brambilla、Stephen G. Davies、Ai M. Fletcher、Paul M. Roberts、James E. Thomson
DOI:10.1016/j.tet.2013.11.094
日期:2014.1
total asymmetric syntheses of (−)-isoretronecanol and (−)-trachelantamidine are reported. Oxidative cleavage of tert-butyl (S,S,S,Z)-7-[N-benzyl-N-(α-methylbenzyl)amino]cyclohept-3-ene-1-carboxylate, followed by hydrogenolysis promoted in situ cyclisation/reduction, which provided rapid access to the bicyclic core within (−)-isoretronecanol. Analogous treatment of the C(1)-epimer gave (−)-trachelantamidine
短而简洁总不对称合成( - ) - isoretronecanol和( - ) - trachelantamidine报告。的氧化裂解叔丁基(小号,小号,小号,Ž)-7- [ Ñ苄基Ñ - (α -甲基苄基)氨基]环庚-3-烯-1-羧酸酯,接着通过氢原位环化/促进还原,可以快速进入(-)-异戊烯醇中的双环核。对C(1)-顶基的类似处理得到(-)-曲安兰ant。总体而言,(-)-异戊烯醇和(-)-三chel烷idine的合成分别由市售起始原料分八步和七步完成,产率分别为20%和9.5%。