An asymmetric synthesis of a 3-hydroxy-β-lactam by ketene-imine cycloaddition: utilization of chiral ketenes from carbohydrates
摘要:
The Staudinger reaction of a chiral carbohydrate-based ketene and an imine proceeds to give, after removal of the sugar, cis-3-hydroxy-beta-lactam 7 in moderate yield with good asymmetric induction (70% e.e.).
An asymmetric synthesis of a 3-hydroxy-β-lactam by ketene-imine cycloaddition: utilization of chiral ketenes from carbohydrates
摘要:
The Staudinger reaction of a chiral carbohydrate-based ketene and an imine proceeds to give, after removal of the sugar, cis-3-hydroxy-beta-lactam 7 in moderate yield with good asymmetric induction (70% e.e.).