中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | methyl 3,4-di-O-benzyl-2-C-benzyloxymethyl-2-deoxy-α-D-glucopyranoside | 942041-39-6 | C29H34O6 | 478.585 |
Several procedures for installing a C2 alkoxy group at C2 of a hex-2-enopyranoside have been investigated. The one that is most convenient for large-scale preparation begins with a 2-keto pyranoside, which is converted into the corresponding exo methylene derivative. An SN2′ rearrangement is effected with thionyl chloride, and the resulting primary allylic chloride is displaced with sodium benzylate.