Efficient Synthesis of Polysubstituted 1,5-Benzodiazepinone Dipeptide Mimetics via an Ugi-4CR-Ullmann Condensation Sequence
作者:Robin Van Den Hauwe、Mathias Elsocht、Steven Ballet、Charlie Hollanders
DOI:10.1055/a-1545-2860
日期:2021.10
three-step synthesis towards 3-amino-1,4-benzodiazepin-2-one derivatives is presented. The versatile Ugi-4-component reaction (Ugi-4CR) and Boc deprotection is followed by a ligand-free Ullmann condensation. This protocol allows the rapid construction of a diverse array of substituted 1,5-benzodiazepinones. Since Ugi-based products are typically limited by their ‘inert’ C-terminal amides, the use of a convertible
提出了对 3-amino-1,4-benzodiazepin-2-one 衍生物的有效三步合成。通用的 Ugi-4 组分反应 (Ugi-4CR) 和 Boc 脱保护之后是无配体的 Ullmann 缩合。该协议允许快速构建多种取代的 1,5-苯二氮卓酮。由于基于 Ugi 的产品通常受其“惰性”C 端酰胺的限制,因此设想使用可转化(“可裂解”)异氰化物并产生可与 SPPS 兼容的构建块。为了证明这种新型合成路线的潜力,报道了具有潜在 CCK2 拮抗剂特性的新型 phenylurea-1,5-benzodiazepin-4(5H)-one 二肽模拟物的设计和制备。