d-arabinose-derived cyclic nitrone 11. Fluorination at the C-7 position enhanced the inhibition against A. niger α-glucosidase, and this constitutes the first example of fluorination substitution for a hydroxyl increasing the inhibition of any glycosidases. The enantiomers synthesized from nitrone ent-11 showed no inhibition of the corresponding enzymes.
                                    Australine(1),7- epi- australine(2)及其C-7
氟化衍
生物4和5是从d-
阿拉伯糖衍生的环硝酮11有效合成的。C-7位的
氟化作用增强了对黑曲霉α-
葡萄糖苷酶的抑制作用,这构成了
氟化取代羟基以增加对任何糖苷酶的抑制作用的第一个例子。从硝酮合成对映异构体ENT -11没有表现出抑制相应的酶。