from commercially available starting materials, have been shown to promote highly enantio- and diastereoselective Michael-type addition reactions between enolizable carbonyl compounds and nitroalkenes of broad scope. The influence of both the absolute and relative stereochemistry at C-9 on catalyst performance has also been assessed. [reaction: see text].
通过一锅法可从市售原料中获得的简单
金鸡纳
生物碱衍
生物已显示出可促进可烯丙基的羰基化合物与广泛范围的硝基烯烃之间的高度对映和非对映选择性迈克尔型加成反应。还评估了C-9处绝对和相对立体
化学对催化剂性能的影响。[反应:请参见文字]。