Synthesis and biological activity of novel vitamin D analogs: 24,24-difluoro-25-hydroxy-26,27-dimethylvitamin D3 and 24,24-difluoro-1.alpha.,25-dihydroxy-26,27-dimethylvitamin D3
作者:Harpal S. Gill、James M. Londowski、Robert A. Corradino、Alan R. Zinsmeister、Rajiv Kumar
DOI:10.1021/jm00164a003
日期:1990.2
25-dihydroxyvitamin D3 with approximately the same affinity as that of 25-hydroxyvitamin D3. In the organ-culture duodenum, 16 induced the synthesis of calcium binding protein with a potency approximately 1/20 that of 1,25-dihydroxyvitamin D3. Compound 21 was also noted to be a highly potent vitamin D analogue with bioactivity in vivo similar to that of 1,25-dihydroxyvitamin D3. It was bound to vitamin
我们从3 beta-合成了24,24-二氟-25-羟基-26,27-二甲基维生素D3(16)和24,24-二氟-1α,25-二羟基-26,27-二甲基维生素D3(21)羟基22,23-二去甲胆酸3-乙酸盐。发现化合物16是高效的维生素D类似物,具有与体内25-羟基维生素D 3相似的生物活性。化合物16被维生素D结合蛋白结合,其亲和力略小于25-羟基维生素D3。它以与25-羟基维生素D3几乎相同的亲和力与1,25-二羟基维生素D3的肠细胞溶胶受体结合。在器官培养十二指肠中,16诱导钙结合蛋白的合成,其效力约为1,25-二羟基维生素D3的1/20。还发现化合物21是一种高效的维生素D类似物,在体内具有类似于1的生物活性,25-二羟基维生素D3。它与维生素D结合蛋白的结合亲和力大大低于1,25-二羟基维生素D3。它以1,25-二羟基维生素D3与肠溶质受体结合,亲和力略低于天然激素。在器官培养十二