New chiral nitrones as precursors of α,α-disubstituted amino-acids, according to the SRS principle
摘要:
The preparation of new enantiopure cyclic nitrones based on the 1-oxy-2,3-dihydro-imidazol-4-one ring is described. The addition of arylmagnesium or alkynylzinc reagents to these nitrones can be achieved with total enantio- and diastereoselectivity, leading to alpha,alpha-disubstituted amino-acid precursors. (c) 2006 Elsevier Ltd. All rights reserved.
New chiral nitrones as precursors of α,α-disubstituted amino-acids, according to the SRS principle
摘要:
The preparation of new enantiopure cyclic nitrones based on the 1-oxy-2,3-dihydro-imidazol-4-one ring is described. The addition of arylmagnesium or alkynylzinc reagents to these nitrones can be achieved with total enantio- and diastereoselectivity, leading to alpha,alpha-disubstituted amino-acid precursors. (c) 2006 Elsevier Ltd. All rights reserved.