Stereospecific synthesis of highly substituted novel carbasugar as carbonic anhydrase inhibitors: decahydronaphthalene-1,2,3,4,5,6,7-heptol
作者:Latif Kelebekli、Neslihan Balcı、Ertan Şahin
DOI:10.1016/j.tet.2014.05.101
日期:2014.8
Decahydronaphthalene-1,2,3,4,5,6,7-heptol, a new polycyclitol, was synthesized starting from p-benzoquinone. An endo selective Diels-Alder cycloaddition between p-benzoquinone and 1-acetoxybutadiene followed by stereoselective reduction with NaBH4/CeCl3·7H2O led to the formation of an allylic cis-diol. The formed diol was converted into its acetate with Ac2O/pyridine, in a transformation that required
从对苯醌开始合成新的多环醇十氢萘-1,2,3,4,5,6,7-庚醇。在对-苯醌和1-乙酰氧基丁二烯之间的内选择性Diels-Alder环加成,然后用NaBH 4 / CeCl 3 ·7H 2 O进行立体选择性还原,导致形成顺式-烯丙基烯丙基。在需要惰性气氛条件下抑制竞争性芳构化的转化中,用Ac 2 O /吡啶将形成的二醇转化为乙酸酯。通过OsO 4控制氧化两个烯键的键合随后进行乙酰化,得到七乙酸酯,其结构通过应用X射线晶体学方法明确地确定。通过NH 3除去乙酸酯基团提供了目标庚醇。另外,研究了标题化合物的碳酸酐酶抑制能力,与标准CA抑制剂相比,它是一种有效的抑制剂。