(+)-(2S,3S,4S,5S,R_S)-4-Hydroxy-2-{N-[(R)-1-Hydroxy-3-methylbut-2-yl]-4-methylphenylsulfonimidoylmethyl}-3-methyl-1-azabicyclo[3.3.0]octane at 153K

The title structure was determined at 153K to establish the absolute configuration of the chiral centers. The N atom of the pyrrolizidine group is pyramidal. Both five-membered rings have approximate twist conformations, with pseudo-twofold axes passing through the N atom. The crystal packing shows intermolecular O-H...O, O-H...N and C-H...O hydrogen bonds.

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