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Structures of two 1α-hydroxylated analogs of vitamins D, 1α-hydroxycholecalciferol and 1α-hydroxyergocalciferol, were solved and refined using single crystal X-ray diffraction. Crystallographic results are verified by 13 C CP/MAS NMR. This method provided also information on molecular mobility of analogs.In the crystal state, both molecules adopt exclusively a chair β-conformation of the 6-member...
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