Synthesis and Biological Evaluation of Vitamin D3 Metabolite 20S,23S-Dihydroxyvitamin D3 and Its 23R Epimer. - Lin, Zongtao; Marepally, Srinivasa R.; Ma, Dejian; Kim, Tae-Kang; Oak, Allen SW.; Myers, Linda K.; Tuckey, Robert C.; Slominski, Andrzej T.; Miller, Duane D.; Li, Wei (Journal of Medicinal Chemistry, 2016)