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. 2015 Mar 6;6(5):2687–2704. doi: 10.1039/c5sc00280j

Table 1. The effect of a 3-O-acyl protection on the stereoselectivity of mannosylation.

Inline graphic
Entry Donor (EWG) Acceptor (1.0 equiv.) Disaccharide yield α/β ratio
1 24 (Ac) 27 91% 1/25.9
2 24 (Ac) 28 94% 1/39.0
3 24 (Ac) 29 92% 1/40.4
4 25 (Bz) 28 88% 1/29.6
5 26 (SO2Bn) 27 95% 15.9/1
6 26 (SO2Bn) 28 93% 10.2/1