1,2-二胺(邻二胺)基序存在于许多具有有趣生物活性的天然产物和许多手性分子催化剂中。对映体富集的邻二胺的高效立体控制合成仍然是现代化学方法的挑战。我们在这里报告了由脯氨酸和轴向手性氨基磺酰胺 (S)-3 催化的 N 保护氨基乙醛与 N-Boc 保护亚胺的顺式和反选择性不对称直接曼尼希反应。这种有机催化过程代表了曼尼希反应的第一个例子,使用 Z 或 Boc 保护的氨基乙醛作为 α-氮官能化醛亲核试剂在烯胺催化中的新入口。获得的旋光邻位二胺是有用的手性合成子,例如 (-)-agelastatin A 的正式合成。
The invention relates to lysobactin amides and methods for their preparation, as well as their use for manufacturing medicaments for the treatment and/or prophylaxis of diseases, in particular bacterial infectious diseases.
The invention relates to cyclic nonapeptide amides and to methods for their preparation and to their use for the production of medicaments for the treatment and/or prophylaxis of diseases, especially bacterial infectious diseases.