Expeditious synthesis of chiral six and seven membered nitrogen heterocycles from carbohydrate amines by N-allyl carbohydrate nitrone cycloaddition: Tuning of regioselectivity by N-substitution
The cycloaddition of N-allyl carbohydrate nitrones leads to enantiomerically pure six and seven membered nitrogen heterocycles and the regioselectivity of the cycloaddition can be tuned by changing the substituent on the nitrogen atom. (C) 1997 Elsevier Science Ltd.