title: Comparison of racemic epi-inosose and (-)-epi-inosose.
abstract: The conversion of myo-inositol to epi-inositol can be achieved by the hydride reduction of an intermediate epi-inosose derived from myo-inositol. (-)-epi-Inosose, (I), crystallized in the monoclinic space group P2(1), with two independent molecules in the asymmetric unit [Hosomi et al. (2000). Acta Cryst. C56, e584-e585]. On the other hand, (2RS,3SR,5SR,6SR)-epi-inosose, C(6)H(10)O(6), (II), crystallized in the orthorhombic space group Pca2(1). Interestingly, the conformation of the molecules in the two structures is nearly the same, the only difference being the orientation of the C-3 and C-4 hydroxy H atoms. As a result, the molecular organization achieved mainly through strong O-H···O hydrogen bonding in the racemic and homochiral lattices is similar. The compound also follows Wallach's rule, in that the racemic crystals are denser than the optically active form.
authors: Centre for Materials Characterization, National Chemical Laboratory, Pune 411 008, India. s.krishnaswamy@ncl.res.in
authors: Shobhana
authors: S
authors: Krishnaswamy
authors: Madhuri T
authors: MT
authors: Patil
authors: Mysore S
authors: MS
authors: Shashidhar
mesh_terms: D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D007294:Inositol / Q000031:analogs & derivatives* / Q000737:chemistry*; D008968:Molecular Conformation; D015394:Molecular Structure
chemical_list: C002183:inosose; D007294:Inositol