used as the starting material. Photooxygenation of the diene unit gave an unsaturated bicyclic endoperoxide. Bromine was incorporated into the molecule by the addition of bromine to the double bond. Opening of the peroxide linkage followed by HBr elimination and reduction of the carbonyl group provided the conduritol-C structure in good yield. Bromo-conduritol-B exhibited strong enzyme-specific inhibition
为了合成
溴-conduritol-B骨架,对
溴-1,4-苯醌进行
溴化,然后用NaBH(4)还原羰基。用AgOAc取代与sp(3)-杂化碳原子键合的
溴化物,可高产率地得到
溴-conduritol-B
四乙酸酯。为了构建
溴-
硬脂醇-C骨架,将2,2-二甲基-3a,7a-二氢-1,3-苯并二
恶唑用作起始材料。二烯单元的光氧化得到不饱和的双环内过氧化物。通过向双键添加
溴将
溴掺入分子中。打开过氧化物键,然后去除HBr和还原羰基,可提供高产率的conduritol-C结构。
溴-conduritol-B对α-糖苷酶表现出很强的酶特异性抑制作用。