作者:Motohiro Kurosawa、Hiroshi Kanamaru、Kazuhiko Nishioka
DOI:10.1002/(sici)1099-1344(199702)39:2<129::aid-jlcr957>3.0.co;2-w
日期:1997.2
in mammalian metabolic studies. The synthesis was achieved in 7 steps from [ 14 C]carbon dioxide: including : 1) Grignard reaction, 2) esterification, 3) condensation with dimethyl methylphosphonate, 4) Wittig-Horner reaction, 5) separation of isomers by HPLC. Stereoselective reduction of the protected ketone with sodium borohydride in the presence of cerium (III) chloride and subsequent desilylation
(+)-甲基[2-[(2R,3aS,4R,5R,6aS)-octahydro-5-hydroxy-4-[(E)-(3S,5S)-3-hydroxy-5-methyl-1- [3- 14 C]壬烯基]-2-戊烯基]乙氧基]-乙酸酯([壬烯基-3- 14 C]SM-10902) (1) 用碳-14 标记,用于哺乳动物代谢研究。从[ 14 C]二氧化碳分7个步骤完成合成:包括:1)格氏反应,2)酯化,3)与甲基膦酸二甲酯的缩合,4)Wittig-Horner反应,5)通过HPLC分离异构体。在氯化铈 (III) 存在下用硼氢化钠立体选择性还原受保护的酮并随后脱甲硅烷产生 1。Ba[ 14 C]CO 3 的总产率为 11.1%