title: Diethyl 4-(4,5-dihydro-furan-2-yl)-3,5-di-methyl-1-phenyl-1,4-dihydro-pyrazine-2,6-dicarboxyl-ate.
abstract: In the title compound, C(22)H(26)N(2)O(5), the central 1,4-dihydro-pyrazine ring adopts a boat conformation, while the benzene ring and the two disordered components of the furan ring are inclined at angles of 77.9 (5) and 61.9 (7)°. Three of the C atoms of the furan ring are disordered over two positions with occupancies of 0.655 (18) and 0.345 (18). In the crystal structure, weak inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into chains propagating in [010].
authors.affiliation: College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, People's Republic of China.
authors.forename: Jing-Yu
authors.initials: JY
authors.lastname: He
authors.forename: Zhi-Lin
authors.initials: ZL
authors.lastname: Tan
authors.forename: Hong
authors.initials: H
authors.lastname: Yan