Effects of 2-substitution on 14-epi-19-nortachysterol-mediated biological events: based on synthesis and X-ray co-crystallographic analysis with the human vitamin D receptor.
Sawada, D., Kakuda, S., Takeuchi, A., Kawagoe, F., Takimoto-Kamimura, M., Kittaka, A.(2018) Org Biomol Chem 16: 2448-2455
- PubMed: 29560490 
- DOI: https://doi.org/10.1039/C8OB00158H
- Primary Citation of Related Structures:  
5YSY, 5YT2 - PubMed Abstract: 
Both 2α- and 2β-hydroxypropyl substituted 14-epi-1α,25-dihydroxy-19-nortachysterols were synthesized to study the human vitamin D receptor (hVDR) binding affinity, binding configurations, and interactions with amino acid residues in the ligand binding domain of hVDR by X-ray co-crystallographic analysis. In conjunction with our previous results on 14-epi-19-nortachysterol, 2-methylidene-, 2α-methyl-, 2β-methyl, and 2α-hydroxypropoxy-14-epi-19-nortachysterol, we propose a variety of effects of substitution at the C2 position in the 14-epi-19-nortachysterol skeleton on biological activities.
Organizational Affiliation: 
Faculty of Pharmaceutical Sciences, Teikyo University, Kaga, Itabashi, Tokyo 173-8605, Japan. akittaka@pharm.teikyo-u.ac.jp.