developed. Core oxindole stereochemistry was established by asymmetric alkylation of oxindole enolates with bromoacetic acid esters, using l-menthol as a chiral auxiliary. The key alkylation reaction of the oxindole enolates generated tetrasubstituted chiral intermediates with high diastereoselectivity. The stereoselective alkylation reactions are described in detail.
开发了有效的不对称合成有效的胃泌素/ CCK-B受体拮抗剂AG-041R的有效方法。使用1-薄荷醇作为手性助剂,通过用
溴乙酸酯对羟
吲哚烯醇酸酯的不对称烷基化来建立核心羟
吲哚立体
化学。羟
吲哚烯醇化物的关键烷基化反应生成具有高非对映选择性的四取代手性中间体。详细描述了立体选择性烷基化反应。