Stereoselective synthesis and structure proof of a metabolite of vitamin D3, (23S,25R)-25-hydroxyvitamin D3 26,23-lactone (calcidiol lactone).
作者:SACHIKO YAMADA、KEIKO NAKAYAMA、HIROAKI TAKAYAMA
DOI:10.1248/cpb.29.2393
日期:——
Stereochemical configurations of biologically prepared 25-hydroxyvitamin D3 26, 23-lactone (calcidiol lactone) at C-23 and C-25 are determined to be S and R, respectively, by comparison of its high performance LC retention time with those of (23S, 25R)-and (23R, 25S)-25-hydroxyvitamin D3 26, 23-lactone which have been synthesized stereoselectively starting from C-22 steroid aldehyde and (R)-or (S)-citramalic acid.
生物制备的 25-羟基维生素 D3 26, 23-内酯(钙二醇内酯)在 C-23 和 C-25 上的立体化学构型分别被确定为 S 和 R、通过比较(23S, 25R)-25-hydroxyvitamin D3 26, 23-内酯和(23R, 25S)-25-hydroxyvitamin D3 26, 23-内酯与(23S, 25R)-(23R, 25S)-25-hydroxyvitamin D3 26, 23-内酯的高效液相色谱保留时间,可以确定它们在 C-23 和 C-25 的立体化学构型分别为 S 和 R。