作者:Thomas Ziegler、Xavier Álvarez-Micó、Mario Calvete、Michael Hanack
DOI:10.1055/s-2007-983753
日期:——
3,4-Dicyanophenyl O- and S-glycosides in the gluco, galacto, lacto, and cellobiose series were prepared in virtually quantitative yield through nucleophilic aromatic substitution of 4-nitrophthalonitrile with acetyl-protected glycoses and 1-thio-glycoses. Similarly, 2-(3,4-dicyanophenoxy)ethyl 2,3,4,6-tetra-O-acetyl-β-d-gluco- and galacto-pyranosides were obtained by nucleophilic substitution of 2-(tosyloxy)ethyl 2,3,4,6-tetra-O-acetyl-β-d-gluco- and -galactopyranoside with 3,4-dicyanophenol in 82% and 94% yields, respectively. All glycosides were deacetylated and tetramerized to the corresponding glycosylated zinc(II) phthalocyanines without further purification using a template condensation in 42-54% yields.
在几乎定量的产率下,通过4-硝基邻苯二甲腈与乙酰保护的糖和1-硫糖进行亲核芳香取代反应,制备了3,4-二氰基苯基O-和S-糖苷,涉及葡萄糖、半乳糖、乳糖和纤维二糖系列。类似地,通过用3,4-二氰基酚对2-(托烯基氧)乙基2,3,4,6-四-O-乙酰-β-D-葡萄糖和-半乳糖吡喃糖进行亲核取代反应,分别获得了2-(3,4-二氰基苯氧)乙基2,3,4,6-四-O-乙酰-β-D-葡萄糖和-半乳糖的产物,产率为82%和94%。所有糖苷在未经进一步纯化的情况下,通过模板缩合法进行去乙酰化和四聚化,得到相应的糖苷化锌(II)酞菁,产率为42-54%。