Table 2.

Selective activation of various glycosyl donors over n-pentenyl acceptor 20 and SEt acceptor 22

entry	D	A	time	product	yield, %	α/β ratio
1	3a	20	10 min	21	86	1.1/1
2	4a	20	20 min	21	85	3.3/1
3	5a	20	10 min	21	83	1/1.2
4	9	20	16 h	21	65a	1.6/1
5	2a	22	15 min	23	84	1.6/1
6	3a	22	20 min	23	87	2.0/1
7	5a	22	15 min	23	89	2.4/1
8	8	22	15 min	23	84	2.2/1
9	9	22	24 h	23	83a	2.4/1

^athe yield is based on the recovered acceptor