Synthesis and Pharmacokinetics of 1.ALPHA.-Hydroxyvitamine D3 Tritiated at 22 and 23 Positions Showing High Specific Radioactivity.
作者:Akira KAWASE、Fumihiko ICHIKAWA、Nobuo KOIKE、Shinichi KAMACHI、Walter E. STUMPF、Yasuho NISHI、Noboru KUBODERA
DOI:10.1248/cpb.48.215
日期:——
reaction with the A-ring synthon (16). [22,23-(3)H4]1 alpha OHD3 (5) showed high specific radioactivity (111.5 Ci/mmol) and was used successfully in pharmacokinetics studies with rats. In the pharmacokinetics studies, the plasma concentration level of the active form of vitamin D3, 1 alpha,25-dihydroxy-vitamin D3 [1 alpha,25(OH)2D3], after oral or intravenous administration of [22,23-(3)H4]1 alpha OHD3
描述了一种新型的1α-羟基维生素D3(1 alpha OHD3)(1)放射性化合物的合成及其药代动力学。通过还原酮(12)中乙炔侧链与in气中的关键反应制备了在22和23位positions化的放射性1αOHD3([22,23-(3)H4] 1αOHD3)(5)。钯木炭的存在以及随后与A环合成子的Wittig反应(16)。[22,23-(3)H4] 1αOHD3(5)具有高比放射性(111.5 Ci / mmol),已成功用于大鼠的药代动力学研究。在药代动力学研究中,口服或静脉内给药[22,23-(3)后,维生素D3、1 alpha,25-二羟基维生素D3 [1 alpha,25(OH)2D3]的活性形式的血浆浓度水平)H4] 1 alpha OHD3(5),半衰期更长,最大浓度更低,曲线下方的面积比在26和27位27化的1 alpha,25(OH)2D3处理后的面积低(4)。这些结果可能表明1