Table 2. Glycosylation of donors 1–3 with carbohydrate acceptors.

Acceptor
	Product, α : β (yield) c	Product, α : β (yield) c	Product, α : β (yield) c
	20	25	30
	1 : 10	1 : 3	<1 : 20
	(97%)	(81%)	(71%)
	21	26	31
	1 : 9	1 : 1	<1 : 20
	(75%)	(79%)	(61%)
	22	27	32
	1 : 10	5 : 1	1 : 10
	(87%)	(90%)	(71%)
	23	28	33
	<1 : 20	>20 : 1	<1 : 20
	(70%)	(83%)	(76%)
	24	29	34
	<1 : 20	>20 : 1	1 : 7
	(87%)	(80%)	(80%)