Total synthesis of the tylophora alkaloids rusplinone, 13aα-secoantofine, and antofine using a multicatalytic oxidative aminochlorocarbonylation/Friedel–Crafts reaction
作者:Lisa M. Ambrosini、Tim A. Cernak、Tristan H. Lambert
DOI:10.1016/j.tet.2010.03.021
日期:2010.6
A rapid synthetic approach to the tylophora alkaloids antofine and 13aα-secoantofine is presented that makes use of a multicatalytic oxidative aminochlorocarbonylation/Friedel–Crafts reaction as the key step. This reaction, along with a one-pot, three-step telescoped process offers a three or four-pot sequence to access the title compounds in high overall yield.
Rapid entry to phenanthroindolizidine alkaloids <i>via</i> an acid-catalysed acyliminium ion-electrocyclization cascade
作者:Max St. Pierre、Christine J. Kempthorne、David K. Liscombe、James McNulty
DOI:10.1039/d3ob01359f
日期:——
A rapid total synthesis of seco-phenanthroindolizidine alkaloids was achieved involving a one-pot acid catalyzed deprotection- condensation-electrocyclization strategy. This synthetic route provided a concise synthesis of (±)-seco-antofine and (±)-septicine in only 4 steps with an overall yield of 22% and 17%, respectively.