A Practical and Stereoconservative Synthesis of (R)-3-Amino-4-(trimethylammonio)butanoate [(R)-Aminocarnitine], and Its Trimethylphosphonium and Simple Ammonium Analogues Starting fromD-Aspartic Acid
作者:Giuseppina Calvisi、Natalina Dell’Uomo、Francesco De Angelis、Roberto Dejas、Fabio Giannessi、Maria Ornella Tinti
DOI:10.1002/ejoc.200300428
日期:2003.12
new stereospecific synthesis of (R)-aminocarnitine using D-aspartic acid as the starting material. This strategy, which is simple and amenable to an industrial scale-up, gives the target compound in six steps and in fairly good overall yields (41%). Other aminocarnitine related molecules such as optically pure (R)-3-amino-4-(trimethylphosphonio)butanoic acid and (R)-3,4-diaminobutanoic acid dihydrochloride
我们开发了一种新的立体定向合成 (R)-氨基肉碱,使用 D-天冬氨酸作为起始材料。这种简单且适合工业放大的策略分六步得到目标化合物,总产率相当高 (41%)。其他氨基肉碱相关分子,如光学纯的 (R)-3-氨基-4-(三甲基膦酰) 丁酸和 (R)-3,4-二氨基丁酸二盐酸盐也已根据相同的合成策略制备。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)