A two-step practical synthesis of dehydroalanine derivatives
作者:Karell Pérez-Labrada、Edwin Flórez-López、Evelyn Paz-Morales、Luis D. Miranda、Daniel G. Rivera
DOI:10.1016/j.tetlet.2011.01.122
日期:2011.4
A two-step practical synthesis of dehydroalaninederivatives from commercially available starting materials is reported. The approach comprises an Ugi four-component reaction using 2-benzoylacetaldehyde, followed by an elimination process of the benzoate group. This protocol provided access to several dehydroalaninederivatives modified with diverse functional groups, which might be useful for further
Photo-induced coupling of tertiary amines with Ugi-derived dehydroalanines as a practical device in the synthesis to 2,4-diaminobutyric acid derivatives
作者:Katy Medrano-Uribe、Luis D. Miranda
DOI:10.1016/j.tetlet.2019.151152
日期:2019.10
Ir-mediated photocatalytic coupling of tertiary amines with Ugi-dehydroalanines was developed as an entry to medicinally important 2,4-diaminobutyric acidderivatives. In the process the 2,4-diaminobutyric acid framework is assembled directly embedded into a peptoide structure, via the construction of the C3(sp3)–C4(sp3) bond, through a CH functionalization. The photocatalyzed oxidation of the tertiary amine