The title compounds are prepared in good yields by simple procedures from readily available starting materials. They can be easily O-methylated by methyl iodide or deoxygenated by triphenylphosphine.
用简单的方法从容易获得的起始原料中以高收率制备标题化合物。它们可以容易地被甲基
碘进行O-甲基化或被
三苯基膦脱氧。