title: N,3'-cyclo-5'-O-Cyano-methyl-thymidine.
abstract: The title compound, C(19)H(20)N(4)O(4), is a cyclo-nucleoside with a C-N linkage. The furan-ose ring adopts a twist C3'-endo/C2'-exo (close to (3)T(2)) conformation with a pseudorotational phase angle (P) of 8.1° and puckering amplitude (v(m)) of 30.6°. The orientation of the pyrimidine ring with respect to the sugar group is anti. One intra-molecular C-H⋯O hydrogen bond is observed. The packing features an N-H⋯O hydrogen bond.
authors.affiliation: College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
authors.forename: Jingbo
authors.initials: J
authors.lastname: Sun
authors.forename: Kun
authors.initials: K
authors.lastname: Yang
authors.forename: Ronghui
authors.initials: R
authors.lastname: Duan
authors.forename: Jinchang
authors.initials: J
authors.lastname: Wu