Enantio- and stereocontrolled formation of the bisspiroacetal core of spirolide B
摘要:
The bisspiroacetal core of spirolide B, a marine natural toxin, was synthesized from triketone 10 via one-step bisspiroacetalization, methylation, and silylation accompanied by isomerization of the C-15 spirocenter. The equilibrium of two isomers under acidic conditions was also examined. (C) 2004 Elsevier Ltd. All rights reserved.
Enantio- and stereocontrolled formation of the bisspiroacetal core of spirolide B
摘要:
The bisspiroacetal core of spirolide B, a marine natural toxin, was synthesized from triketone 10 via one-step bisspiroacetalization, methylation, and silylation accompanied by isomerization of the C-15 spirocenter. The equilibrium of two isomers under acidic conditions was also examined. (C) 2004 Elsevier Ltd. All rights reserved.
was constructed. The functionalized cyclohexene in spirolides was stereoselectively synthesized from the bicyclic lactone, which could be readily accessed by the Lewis acid template‐catalyzed asymmetric Diels–Alderreaction of the pentadienol and methyl acrylate.
The bisspiroacetal core of spirolide B, a marine natural toxin, was synthesized from triketone 10 via one-step bisspiroacetalization, methylation, and silylation accompanied by isomerization of the C-15 spirocenter. The equilibrium of two isomers under acidic conditions was also examined. (C) 2004 Elsevier Ltd. All rights reserved.