Sydnes Magne O, Hayashi Yoshio, Sharma Vinay K, Hamada Takashi, Bacha Usman, Barrila Jennifer, Freire Ernesto, Kiso Yoshiaki
Department of Medicinal Chemistry, Center for Frontier Research in Medicinal Science, 21st Century COE Program, Kyoto Pharmaceutical University, Kyoto 607-8412, Japan.
Department of Biology, Johns Hopkins University, Baltimore, MD, USA.
Tetrahedron. 2006 Sep 4;62(36):8601-8609. doi: 10.1016/j.tet.2006.06.052. Epub 2006 Jul 14.
Trifluoromethyl-β-amino alcohol [(4)--butyl 4-amino-6,6,6-trifluoro-5-hydroxyhexanoate] was synthesized in five steps starting from Cbz-l-Glu-OH where the key step involved the introduction of the trifluoromethyl (CF) group to oxazolidinone , resulting in the formation of silyl ether [(4,5)-benzyl 4-(2-(-butoxycarbonyl)ethyl)-5-(trifluoromethyl)-5-(trimethylsilyloxy)oxazolidine-3-carboxylate]. Compound was then converted into four tri- and tetra-glutamic acid and glutamine peptides (-) possessing a CF-ketone group that exhibited inhibitory activity against severe acute respiratory syndrome coronavirus protease (SARS-CoV 3CL).
三氟甲基-β-氨基醇[(4)-丁基4-氨基-6,6,6-三氟-5-羟基己酸酯]以Cbz-L-谷氨酸-OH为起始原料,经五步合成,其中关键步骤是将三氟甲基(CF)基团引入恶唑烷酮,生成硅醚[(4,5)-苄基4-(2-(-丁氧基羰基)乙基)-5-(三氟甲基)-5-(三甲基硅氧基)恶唑烷-3-羧酸酯]。然后将该化合物转化为四种具有CF-酮基团的三谷氨酸和四谷氨酸及谷氨酰胺肽(-),这些肽对严重急性呼吸综合征冠状病毒蛋白酶(SARS-CoV 3CL)具有抑制活性。