作者:Hideyo Takahashi、Takahiro Nakayama、Kazusa Nishiyama、Hideaki Natsugari
DOI:10.1055/s-0029-1217073
日期:2010.1
A new glycosidation of α-d-altropyranosides, in which the 2-hydroxy group is not protected, was developed. The reaction proceeds via a 1,2-β-oxirane, which is formed in situ without extra steps for exchanging the 1-methoxy group to a more reactive leaving group. The glycoside bond of α-d-altropyranoside was shown to be weaker compared with those of α-d-glucopyranoside and α-d-mannopyranoside.
研究人员开发了一种新的δ-d-altropyranosides糖苷化反应,其中 2-羟基不受保护。反应通过 1,2-δ-环氧乙烷进行,该环氧乙烷在原位形成,无需额外步骤将 1-甲氧基交换为活性更强的离去基团。与δ-d-吡喃葡萄糖苷和δ-d-吡喃甘露糖苷相比,δ-d-阿洛糖苷的苷键较弱。