Model Studies on the Synthesis of Madangamine Alkaloids. Assembly of the Macrocyclic Rings
摘要:
Using simplified model derivatives, the assembly of the macrocyclic rings of madangamines, including the 13- and 14-membered D rings of madangamlnes C-E, the all-cis-triunsaturated 15-membered D ring of madangamine A, and the (Z,Z)-unsaturated 11-membered E ring common to madangamines A-E, has been studied.
Model Studies on the Synthesis of Madangamine Alkaloids. Assembly of the Macrocyclic Rings
摘要:
Using simplified model derivatives, the assembly of the macrocyclic rings of madangamines, including the 13- and 14-membered D rings of madangamlnes C-E, the all-cis-triunsaturated 15-membered D ring of madangamine A, and the (Z,Z)-unsaturated 11-membered E ring common to madangamines A-E, has been studied.
Enantioselective formal synthesis of (+)-madangamine A
作者:Celeste Are、Maria Pérez、Joan Bosch、Mercedes Amat
DOI:10.1039/c9cc03690c
日期:——
An enantioselective formal synthesis of the marine alkaloid madangamine A using phenylglycinol-derived lactam 1 as the starting enantiomeric scaffold is reported. The synthesis involves the construction of the C-9 substituted diazatricyclic ABC core and the final closure of D and E rings from the polyunsaturated skipped intermediate 19.