作者:M. P. Groziak、R. Lin、P. D. Robinson
DOI:10.1107/s0108270194012631
日期:1995.6.15
The title compound, [3S,4S,5R-(1 beta,3 beta,4a alpha,7a alpha,13a beta)]-1,4,4a,7a,8,13a-hexahydro-1-hydroxy-6,6-dimethyl-3,13a:4,8-diepoxy-3H,6H-dioxolano[4,5-f]pyrimido [6,1- c][1,4]oxazonine-10,12(11H,13H)-dione, C13H16N2O8, is a structurally unusual C6-spiro-fused anti-locked dihydrouridine nucleoside derivative arising from the monohydration and subsequent two-step cyclization of a uridine-6,5'-dicarboxaldehyde. The torsion angle O4'-C1'-N1-C6 of the glycosidic linkage is 42.7 (4)degrees.