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Premathilake HD Gobble CP Pornsuriyasak P Hardimon T Demchenko AV De Meo C 《Organic letters》2012,14(4):1126-1129
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. 相似文献
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