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以N-乙酰基-吲哚-2-甲酸(B)为起始原料,经过氢化、水解、拆分而制得(S)-(-)-二氢吲哚-2-甲酸,总收率21%。
(S) - (-) - indoline-2-carboxylic acid was obtained by hydrogenation, hydrolysis and resolution starting from N-acetyl-indole-2-carboxylic acid (B) twenty one%.