名称:
Synthesis of d-gluco-, l-ido-, d-galacto-, and l-altro-configured glycaro-1,5-lactams from tartaric acid
摘要:
The D-gluco-, L-ido-, D-galacto-, and L-altro-configured glycaro-1,5-lactams 1-4 were prepared from the known tartaric anhydride 5 via the aldehyde 6. These lactams are known (1) or potential (2-4) inhibitors of beta-D-glucuronidases and alpha-L-iduronidases. Olefination of 6 to the (E)- and (Z)-alkenes 7 or 8, followed by reagent or substrate controlled dihydroxylation, lactonization, azidation, reduction, and deprotection led in 10 steps and in overall yields of 11-20% to the title lactams. (c) 2005 Elsevier Ltd. All rights reserved.