title: Synthesis of 4-Oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-6-carboxamides using a modification of Ugi condensation.
authors.affiliation: ChemDiv, Inc., 11558 Sorrento Valley Road, Suite 5, San Diego, CA 92121, USA.
authors.forename: Alexey P
authors.initials: AP
authors.lastname: Ilyn
authors.forename: Andrey S
authors.initials: AS
authors.lastname: Trifilenkov
authors.forename: Sergey A
authors.initials: SA
authors.lastname: Tsirulnikov
authors.forename: Irina D
authors.initials: ID
authors.lastname: Kurashvily
authors.forename: Alexandre V
authors.initials: AV
authors.lastname: Ivachtchenko