How O-Substitution of Sialyl Donors Affects Their Stereoselectivity
作者:Hemali D. Premathilake、Chase P. Gobble、Papapida Pornsuriyasak、Tramaine Hardimon、Alexei V. Demchenko、Cristina De Meo
DOI:10.1021/ol3000475
日期:2012.2.17
The profound effect of substituents at C-5 of glycosyl sialosides on their stereoselectivity is well-known although the exact nature of this effect is somewhat less understood. Presented herein is a comparative study of a range of novel sialyl donors with various O-substituents. It is demonstrated that O-substituents at C-4 and C-7 may also have a significant effect on the reactivity of sialyl donors and on the stereoselectivity of chemical sialylation.