N-allyl-aminohexenitol as a key step. While the (2R,3R,4R)-2-hydroxymethyl-3,4-dihydroxy-azepane 10, a seven-membered ring analogue of fagomine, is a weak inhibitor of glycosidases, the (2R,3R,4R,5S,6S)-2-hydroxymethyl-3,4,5,6-tetrahydroxy-azepane 9 selectively inhibits green coffee bean alpha-galactosidase in the low micromolar range (Ki = 2.2 muM) despite a D-gluco relative configuration.
七元环亚
氨基醛糖醇的第一个实例的合成,是由d-
阿拉伯糖在10个步骤中使用受保护的N-烯丙基
氨基己烯醇是关键步骤。尽管(2R,3R,4R)-2-羟甲基-3,4-二羟基-阿扎
庚烷10是一种七叶草胺的环类似物,是糖苷酶的弱
抑制剂,但(2R,3R,4R,5S,6S )-2-羟甲基-3,4,5,6-四羟基-氮杂
环庚烷9尽管具有
D-葡萄糖的相对构型,但仍在低微摩尔范围(Ki = 2.2μM)下选择性抑制生咖啡豆
α-半乳糖苷酶。