| 摘要 |
The invention relates to 1-{2(S)-[1(S)-(ethoxycarbonyl)butylamin]propionyl}-(3aS,7aS)octahydroindol-2(S)-carboxylic acid of the Formula I and the t-butylamine salt of the Formula I thereof free of contaminations derivable from dicyclohexyl carbodiimide, and a process for the preparation thereof. Theinvention also relates to new intermediates of the general Formula III (wherein R stands for lower alkyl or aryl lower alkyl). The compound of the Formula I -perindopril - is a known ACE inhibitor. (I) (IÆ) (III)
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