Optically Active Antifungal Azoles. IX. An Alternative Synthetic Route for 2-((1R,2R)-2-(2,4-Difluorophenyl)-2-hydroxy-1-methyl-3-(1H-1,2,4-triazol-1-yl)propyl)-4-(4-(2,2,3,3-tetrafluoropropoxy)phenyl)-3(2H,4H)-1,2,4-triazolone and Its Analogs.
作者:Tomoyuki KITAZAKI、Akihiro TASAKA、Hiroshi HOSONO、Yoshihiro MATSUSHITA、Katsumi ITOH
DOI:10.1248/cpb.47.360
日期:——
A new route for the synthesis of the optically active antifungal azole TAK-187, 2-[(1R,2R)-2-(2,4-difluorophenyl)-2-hydroxy-1-methyl-3-(1H-1,2,4-tria zol-1- yl)propyl]-4-[4-(2,2,3,3-tetrafluoropropoxy)phenyl]-3(2H,4H)-1,2,4 - triazolone, was established. The key synthetic intermediate, 2-[(1R)-2-(2,4-difluorophenyl)-2-oxo-1-methylethyl]-4-[4-(2,2,3,3- tetrafluoropropoxy)phenyl]-3(2H,4H)-1,2,4-triazolone
合成旋光性抗真菌唑TAK-187,2-[((1R,2R)-2-(2,4-二氟苯基)-2-羟基-1-甲基-3-(1H-1,建立了2,4-三唑-1-基)丙基] -4- [4-(2,2,3,3-四氟丙氧基)苯基] -3(2H,4H)-1,2,4-三唑酮。关键合成中间体2-[[(1R)-2-(2,4-二氟苯基)-2-氧-1-甲基乙基] -4- [4-(2,2,3,3-四氟丙氧基)苯基]-从(S)-乳酸的酯(11a,b)以立体控制的方式制备3(2H,4H)-1,2,4-三唑酮(8)。将该光学活性的苯乙酮衍生物8转化为一个碳延长的(1R,2S)-二醇7,然后使其与1H-1,2,4-三唑反应生成TAK-187。该新开发的路线适用于合成含咪唑酮或咪唑烷酮核的类似物(25a,b--28a,b)。