An efficient entry to highly substituted chiral 2-oxopiperazines from α-amino acids via iodocyclization

Autor: Amit Kumar Jana, Sanjit Kumar Das, Gautam Panda
Rok vydání: 2012
Předmět:
Zdroj: Tetrahedron. 68:10114-10121
ISSN: 0040-4020
DOI: 10.1016/j.tet.2012.09.109
Popis: A short and stereoselective route for the synthesis of 2-oxopiperazines is presented starting from different naturally abundant α-amino acids. The key synthetic steps involved amide coupling, Wittig reaction, HWE olefination, aza-Michael reaction, iodocyclization. This new pathway involving first report of iodocyclization to construct chiral substituted 2-oxopiperazines furnished final compounds in good yields.
Databáze: OpenAIRE