Cyclopentadiene nitroso adducts 1a and ent-1a were synthesised in good yields and good enantiomeric excess from chiral chloro-nitroso derivatives 4 and 5 in the d-mannose and d-ribose series, respectively. The thermal racemisation of these adducts occurred below room temperature. Some other chiral Diels–Alder nitroso adducts were prepared in the d-mandelic, l-prolinol and d-O-methylprolinol series
Asymmetric synthesis of the l-fuco-nojirimycin, a nanomolar α-l-fucosidase inhibitor
作者:Mathieu Dubernet、Albert Defoin、Céline Tarnus
DOI:10.1016/j.bmcl.2005.11.100
日期:2006.3
We describe the asymmetric synthesis of the 5-amino-5-deoxy-L-fucose (L fuco-nojirimycin) which appears as a very potent fucosidase inhibitor with a K-1 value of 1 nM. (C) 2005 Elsevier Ltd. All rights reserved.