Table 1. Model acceptor glycosylations.

Acceptor	N a	F b
			Product, α : β (yield) c	Product, α : β (yield) c	Product, α : β (yield) c
	—	—	1A	2A	3A
			1 : 6	1 : 5	1 : 8
			(96%)	(71%)	(83%)
	7.44	0.01	1B	2B	3B
			1 : 5	1 : 10	1 : 8
			(70%)	(68%)	(95%)
	—	0.15	1C	2C	3C
			1 : 5	1 : 3	1 : 6
			(86%)	(70%)	(70%)
	—	0.29	1D	2D	3D
			1 : 5	5 : 1	1 : 5
			(90%)	(70%)	(87%)
	1.11	0.38	1E	2E	3E
			1 : 4	>20 : 1	1 : 2.5
			(78%)	(64%)	(85%)
	–1.93	—	1F	2F	3F
			3 : 1	>20 : 1	1 : 1
			(56%)	(65%)	(52%)
	3.58	—	1G	2G	3G
			<1 : 20	>20 : 1	<1 : 20
			(60%)	(79%)	(95%)
	1.68	—	1H	2H	3H
			<1 : 20	>20 : 1	<1 : 20
			(44%) d	(42%) d	(40%) d

^aMayr's nucleophilicity parameters.

^bField inductive parameters.

^cα/β-Ratios were established by NMR spectroscopy of the crude and purified reaction mixtures.

^dBoth anomers of donor glycoside were also found after the glycosylation reaction. Literature yields of 1H ⁴⁰: 57% and 2H ⁴⁰: 56%.