中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | Bn(-2)[Bn(-3)][Bn(-4)][Bn(-6)]Glc(b1-4)[Bn(-2)][Bn(-6)]Glc(b)-O-allyl | 1310869-69-2 | C57H62O11 | 923.113 |
—— | 2,3,6,2',3',4',6'-hepta-O-benzyl-α,β-D-cellobiose | 148968-90-5 | C61H64O11 | 973.173 |
—— | allyl 4-O-(6-O-acetyl-2,3,4-tri-O-benzyl-β-D-glucopyranosyl)-2,3,6-tri-O-benzyl-β-D-glucopyranoside | 131267-28-2 | C59H64O12 | 965.15 |
The treatment of tetra-O-benzyl-D-glucono-1,5-lactone with various alkenylmagnesium halides gave the intermediate lactols which, upon reduction (Et3SiH/BF3) and protecting group manipulation, yielded alkenyl tetra-O-acetyl-β-D-C-glucopyranosides in good yield. These β-D-C-glucosides were precursors of the epoxyalkyl β-D-C-glucopyranosides, themselves putative inhibitors of b-glucan hydrolases. Similar additions of Grignard reagents to per-benzylated cellobionolactone were not as successful in yielding epoxyalkyl β-C-cellobiosides. The addition of Grignard reagents to 1,2-anhydro-3,4,6-tri-O-benzyl-α-D- glucose offers a viable alternative route to the prop-2-enyl β-D-C-glucoside, but not to the but-3-enyl and pent-4-enyl counterparts. Likewise, the addition of Grignard reagents to a 1,2-anhydro cellobiose gave disappointing results. Preliminary results are reported for a novel approach to alkenyl β-D-C-glucosides by the alkylation of nitromethyl β-D-C-glucosides.