Green Synthesis of (<i>R</i>)-Terbutaline for Recyclable Catalytic Asymmetric Transfer Hydrogenation in Ionic Liquids
作者:Hitomi Uchimoto、Miki Ikeda、Saori Tanida、Kayo Ohhashi、Yoshiko Chihara、Takashi Shigeta、Kenji Arimitsu、Masayuki Yamashita、Kiyoharu Nishide、Ikuo Kawasaki
DOI:10.1248/cpb.c16-00949
日期:——
We synthesize optically active (R)-terbutaline 2, which is an anti-asthmatic drug, through recyclable catalytic asymmetric transfer hydrogenation (RCATH). Various chloroketones 4 were prepared and RCATH was performed on them. The products exhibit moderate to high enantioselectivity. In particular, the hydrogenation of acyl substituted substrates 4c yields chiral secondary alcohols 5c in good yield
我们通过可循环的催化不对称转移氢化(RCATH)合成了光学活性(R)-特布他林2,这是一种抗哮喘药。制备了各种氯酮4并对其进行了RCATH。产物表现出中等至高的对映选择性。特别地,酰基取代的底物4c的氢化以良好的产率和对映选择性产生手性仲醇5c。此外,(R)-叔丁胺2可以在不消旋的情况下由所得仲醇5一步合成。