Stereoselective Synthesis of 24-Fluoro-25-Hydroxyvitamin D3 Analogues and Their Stability to hCYP24A1-Dependent Catabolism
作者:Fumihiro Kawagoe、Sayuri Mototani、Kaori Yasuda、Hiroki Mano、Toshiyuki Sakaki、Atsushi Kittaka
DOI:10.3390/ijms222111863
日期:——
Two 24-fluoro-25-hydroxyvitamin D3 analogues (3,4) were synthesized in a convergent manner. The introduction of a stereocenter to the vitamin D3 side-chain C24 position was achieved via Sharpless dihydroxylation, and a deoxyfluorination reaction was utilized for the fluorination step. Comparison between (24R)- and (24S)-24-fluoro-25-hydroxyvitamin D3 revealed that the C24-R-configuration isomer 4 was
以收敛方式合成了两种 24-氟-25-羟基维生素 D 3类似物 ( 3 , 4 )。将立体中心引入维生素 D 3侧链 C24 位置是通过 Sharpless 二羟基化实现的,并且脱氧氟化反应用于氟化步骤。(24 R )- 和 (24 S ) -24-氟-25-羟基维生素 D 3 之间的比较表明,C24- R-构型异构体4比其 24 S-异构体3更能抵抗 CYP24A1 依赖性代谢。CYP24A1 主要代谢物(24 R)-24,25-二羟基维生素 D 3 ( 6 ) 及其 24 S-异构体 ( 5 ) 也平行使用合成中间体 ( 30 , 31 ) 进行了研究。