Structural, Thermoanalytical and Molecular Modeling Studies on N-(3-hydroxypropyl) 3a,12a-Dihydroxy-5b-cholan-24-amide and Its Monohydrates
Valkonen, A., Kolehmainen, E., Lahtinen, M., Sievänen, E., Noponen, V., Tolonen, M., & Kauppinen, R. (2007). Structural, Thermoanalytical and Molecular Modeling Studies on N-(3-hydroxypropyl) 3a,12a-Dihydroxy-5b-cholan-24-amide and Its Monohydrates. Molecules, 12, 2161-2178. https://doi.org/10.3390/12092161
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2007Copyright
© 2007 by MDPI.
The synthetic method for preparing N-(3-hydroxypropyl) 3α,12α-dihydroxy-5β-
cholan-24-amide can lead to formation of at least three different crystal forms – an
anhydrous compound and two monohydrates. The structural and thermal properties of
these forms have been characterized by 13C-CP/MAS-NMR and IR spectroscopy, thermogravimetry,
differential scanning calorimetry and by powder and single crystal x-ray
crystallography. In addition, theoretical 13C-NMR chemical shift calculations were also
performed for the anhydrous compound and for the first monohydrate, starting from single
crystal structures and the structures of these species have now been verified. The first
monohydrate, C27H47NO4 · H2O, crystallizes in orthorhombic space group P212121 with
cell parameters: a = 7.1148(2), b = 18.1775(5), c = 20.1813(6), Z = 4.
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