Asymmetric synthesis of (−)- and (+)-eutipoxide B using a base-catalyzed Diels–Alder reaction
摘要:
The asymmetric synthesis of eutipoxide B, a metabolite of the phytopathogenic fungus Eutypa lata, is described. Quick and efficient synthesis of each enantiomer was achieved through base-catalyzed asymmetric Diels-Alder reactions with 3-hydroxy-2-pyrone and chiral acrylates. (C) 2001 Elsevier Science Ltd. All rights reserved.
Asymmetric synthesis of (−)- and (+)-eutipoxide B using a base-catalyzed Diels–Alder reaction
摘要:
The asymmetric synthesis of eutipoxide B, a metabolite of the phytopathogenic fungus Eutypa lata, is described. Quick and efficient synthesis of each enantiomer was achieved through base-catalyzed asymmetric Diels-Alder reactions with 3-hydroxy-2-pyrone and chiral acrylates. (C) 2001 Elsevier Science Ltd. All rights reserved.
In the presence of a cinchona alkaloid as a catalyst, the Diels-Alderreaction of 3-hydroxy-2-pyrone with chiral N-acryloyl oxazolidinone afforded a bicyclolactone adduct with high diastereoselectivities (up to 95%de) in almost quantitative yield.
The asymmetric synthesis of eutipoxide B, a metabolite of the phytopathogenic fungus Eutypa lata, is described. Quick and efficient synthesis of each enantiomer was achieved through base-catalyzed asymmetric Diels-Alder reactions with 3-hydroxy-2-pyrone and chiral acrylates. (C) 2001 Elsevier Science Ltd. All rights reserved.