作者:Nigel S. Simpkins、Alexander J. Blake、Christopher Gill、Daniel A. Greenhalgh、Fengzhi Zhang
DOI:10.1055/s-2005-918478
日期:——
A new asymmetric total synthesis of the erythrinan alkaloid erysotramidine is described, which uses chiral base desymmetrisation, N-acyliminium addition, and 6-exo-trig radical cyclisation as the key steps.
Efficient Formal Total Synthesis of the Erythrina Alkaloid (+)-Erysotramidine, Using a Domino Process
作者:Lutz F. Tietze、Nina Tölle、Daniel Kratzert、Dietmar Stalke
DOI:10.1021/ol901980u
日期:2009.11.19
iminium ion and electrophilic aromatic substitution of a phenylethylamine and a ketoester leads to the spirocyclic skeleton of (+)-erysotramidine, which can be further transformed into the natural alkaloid.