New analogs of 2-methylene-19-nor-(20S)-1,25-dihydroxyvitamin D(3) with conformationally restricted side chains: Evaluation of biological activity and structural determination of VDR-bound conformations.
Vanhooke, J.L., Tadi, B.P., Benning, M.M., Plum, L.A., Deluca, H.F.(2007) Arch Biochem Biophys 460: 161-165
- PubMed: 17227670 
- DOI: 10.1016/j.abb.2006.11.029
- Primary Citation of Related Structures:  
2O4J, 2O4R - PubMed Abstract: 
We have successfully prepared E- and Z- isomers of 17-20 dehydro analogs of 2-methylene-19-nor-(20S)-1alpha,25-dihydroxyvitamin D3 (2MD). Both isomers bind to the recombinant rat vitamin D receptor (VDR) with high affinity. The Z-isomer (Vit-III 17-20Z) displays activity in vivo and in vitro that is similar to 2MD ...