Alkylidene acetoacetamides are useful building blocks for the preparation of a number of biologically active derivatives, including dehydro-β-amino-acid-containing peptidomimetics. A one-pot two-step protocol for the preparation of amino-acid-derived unsaturated acetoacetamides has been optimized. The use of microwave activation avoids, or at least decreases, the need for catalysts in both steps. A
亚烷基乙酰乙酰胺是制备许多
生物活性衍
生物的有用构件,包括含脱氢-β-
氨基酸的
肽模拟物。一种用于制备
氨基酸衍生的不饱和乙酰乙酰胺的一锅两步方案已得到优化。微波活化的使用避免或至少减少了两个步骤中对催化剂的需要。从获得的小分子集合中选择亮
氨酸衍
生物以转化成相应的含脱氢-β-
氨基酸的
肽模拟物。已知这样的片段能够诱导β-转变成肽序列,并且由于不饱和的存在,它们可能代表选择性修饰和结合的位点。