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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/25015

    Title: Inhibitors of 25-hydroxyvitamin D3-1α-hydroxylase: Thiavitamin D analogs and biological evaluation
    Authors: 李世元;Lee, Adam Shih-yuan;Muralidharan, K. Raman;Rowland-Goldsmith, Melissa;Park, Gyoosoon;Norman, Anthony W.;Henry, Helen L.;Okamura, William H.
    Contributors: 淡江大學化學學系
    Date: 1997-05-01
    Issue Date: 2009-12-01
    Publisher: Elsevier
    Abstract: Six A-ring analogs of 1α,25-dihydroxyvitamin D3 (1, 1α,25-(OH)2-D3) 3-deoxy-3-thia-1α,25-(OH)2-D3 (3), 3-deoxy-3-thia-1α,25-(OH)2-D3-3α-oxide (6), 3-deoxy-3-thia-1α,25-(OH)2-D3-3β-oxide (7) and the 5,6-trans counterparts 5, 8, and 9, respectively—were tested for their ability to inhibit 25-hydroxy-D3-1α-hydroxylase (1-OH-ase) in vitro in mitochondria isolated from kidneys of vitamin D deficient chicks. The six analogs were also evaluated in terms of their ability to bind to the chicken intestinal nuclear receptor (VDR) in comparison to the natural hormone 1α,25-(OH)2-D3. Analog 7 is not only the best inhibitor of the 1-OH-ase but it also binds effectively to the chick intestinal receptor. It is established that vitamin D analogs must have a 1α oxygen group for effective inhibition of the 1-OH-ase. This functional group is also needed for effective binding to the chick intestinal VDR.
    Relation: Journal of steroid biochemistry and molecular biology 62(1), pp.73-78
    DOI: 10.1016/S0960-0760(97)00015-0
    Appears in Collections:[化學學系暨研究所] 期刊論文

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