A Novel Route for Chiral Synthesis of the Triazole Antifungal ER-30346.
作者:Yumiko KAKU、Akihiko TSURUOKA、Hiroyuki KAKINUMA、Itaru TSUKADA、Manabu YANAGISAWA、Toshihiko NAITO
DOI:10.1248/cpb.46.1125
日期:——
A novel synthetic route to (2S, 3S)-2-(2, 4-difluorophenyl)-3-hydroxy-2-methyl-4-(1-(1, 2, 4-triazolyl))butyronitrile (2), an intermediate for the orally active triazole antifungal agent ER-30346, was developed from methyl S-(+)-3-hydroxy-2-methylpropionate, a commercially available chiral compound. The second chiral center was constructed with 6.4 : 1 diastereoselectivity via osmium tetroxide catalyzed dihydroxylation.
开发了一种新的合成路线,以市售的手性化合物甲基S-(+)-3-羟基-2-甲基丙酸酯为原料,制备口服活性三唑类抗真菌药物ER-30346的关键中间体(2S, 3S)-2-(2, 4-二氟苯基)-3-羟基-2-甲基-4-(1-(1, 2, 4-三唑基))丁腈(2)。通过四氧化锇催化的双羟基化反应,以6.4 : 1的非对映选择性构建了第二个手性中心。