Asymmetric synthesis of thymine nucleoside analogues based on the isochroman core
摘要:
Diastereoisomeric analogues of d4T having an isochroman core as the glycone moiety have been prepared in seven steps. Starting from phthalaldehyde, two chiral centres analogous to the alpha/beta anomers of D/L sugars were created. The first was obtained enantiomerically pure via asymmetric dihydroxylation and the second via cyclisation of an aldehyde group with a primary hydroxyl group. Retention of chiral integrity at the C-4 Site enabled enantiomerically pure nucleoside analogues to be obtained. (c) 2005 Elsevier Ltd. All rights reserved.
Asymmetric synthesis of thymine nucleoside analogues based on the isochroman core
摘要:
Diastereoisomeric analogues of d4T having an isochroman core as the glycone moiety have been prepared in seven steps. Starting from phthalaldehyde, two chiral centres analogous to the alpha/beta anomers of D/L sugars were created. The first was obtained enantiomerically pure via asymmetric dihydroxylation and the second via cyclisation of an aldehyde group with a primary hydroxyl group. Retention of chiral integrity at the C-4 Site enabled enantiomerically pure nucleoside analogues to be obtained. (c) 2005 Elsevier Ltd. All rights reserved.