New vitamin D3 derivatives with unexpected antiproliferative activity: 1-(hydroxymethyl)-25-hydroxyvitamin D3 homologs
作者:Gary H. Posner、Todd D. Nelson、Kathryn Z. Guyton、Thomas W. Kensler
DOI:10.1021/jm00095a026
日期:1992.8
Surprisingly, both of the synthetic 1-(hydroxymethyl)-25-hydroxyvitamin D3 diastereomers (-)-2 and (+)-3 retained the antiproliferative activity of natural calcitriol in murine keratinocytes. Preliminary studies indicated, however, that both of these synthetic diastereomers were less than 0.1% as effective as calcitriol for binding to the 1,25-(OH)2-D3 receptor and that they were less than 0.1% as
令人惊讶地,合成的1-(羟甲基)-25-羟基维生素D3非对映异构体(-)-2和(+)-3均保留了天然骨化三醇在鼠角质形成细胞中的抗增殖活性。然而,初步研究表明,这两种合成的非对映异构体与钙三醇结合1,25-(OH)2-D3受体的有效性均低于钙三醇,而钙结合蛋白的效价均低于钙三醇的0.1%。器官培养的胚胎十二指肠中的-D28K诱导。1-(羟甲基)-25-羟基维生素D3同源物(-)-2和(+)-3通过对映体纯的C,D环酮12与高度对映体富集的A环膦氧化物(- )-11a和(+)-11b。从3-溴-2-吡喃酮和丙烯醛的热[2 + 4]环加成反应开始制备这些A环螯合物。