Enzymatic Synthesis of Glucoside Derivatives of Validamine and Valienamine.
作者:Tadashi FURUMOTO、Yukihiko KAMEDA、Katsuhiko MATSUI
DOI:10.1248/cpb.40.1871
日期:——
α- And β-glucoside derivatives of validamine and valienamine were prepared by enzymatic transglucosidation using α- and β-glucosidase of rhodotorula lactosa. The structures of these derivatives have been elucidated by 13C- and 1H-nuclear magnetic resonance spectral analysis. Thus, 7-α-glucoside, 7-α-isomaltoside, and 4-α-glucoside of validamine and 7-α-glucoside, 7-α-isomaltoside, 4-α-glucoside, and 4-α-isomaltoside of valienamine were obtained from maltose and validamine or valienamine using α-glucosidase. 7-β-Glucoside, 2-β-glucoside, and 4-β-glucoside of validamine or valienamine were obtained from cellobiose and validamine or valienamine using β-glucosidase. These derivatives were tested for α-glucosidase inhibitory activity on rat small intestinal glycosidases.
利用乳酸根瘤菌的α-和β-葡萄糖苷酶进行酶促转糖苷反应,制备了有效胺和缬烯胺的α-和β-葡萄糖苷衍生物。这些衍生物的结构已通过 13C 和 1H 核磁共振光谱分析得以阐明。因此,利用α-葡萄糖苷酶从麦芽糖和有效胺或缬草胺中得到了有效胺的 7-α-葡萄糖苷、7-α-异麦芽糖苷和 4-α-葡萄糖苷,以及缬草胺的 7-α-葡萄糖苷、7-α-异麦芽糖苷、4-α-葡萄糖苷和 4-α-异麦芽糖苷。使用 β-葡萄糖苷酶从纤维生物糖和有效胺或缬烯胺中获得有效胺或缬烯胺的 7-β-葡萄糖苷、2-β-葡萄糖苷和 4-β-葡萄糖苷。测试了这些衍生物对大鼠小肠糖苷酶的α-葡萄糖苷酶抑制活性。