Acta Cryst. (2009). E65, o432-o433 [ doi:10.1107/S1600536809003365 ]
Abstract: The title compound, C19H19N3O7, is a thymidine derivative and serves as an intermediate in the synthesis of a 99mTc radiolabeled nucleoside analog. Intermolecular O-HO hydrogen bonding is observed between the hydroxy functionalities of the ribose unit themselves as well as between a hydroxy group and an O atom of the phthalimide group of an adjacent molecule. The molecules are stacked on top of each other in the direction of the a axis. The crystal packing is further stabilized by weak intra- and intermolecular C-HO hydrogen bonds. The absolute configuration of the compound is known from the synthesis.
Online 31 January 2009
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