The present invention relates to the process of preparation of 2,3,4,9-tetrahydro- 1 /-/-β-carbolin-3-carboxylic acid esters substituted in position 1 of the general formula (I). in the preferred diastereoisomeric form through a single step starting from tryptophan in racemic form and/or its enantiomers and from 3,4-(methylenedioxy)benzaldehyde.
本发明涉及一种从色
氨酸的外消旋形式和/或其对映体以及3,4-(亚甲二氧基)
苯甲醛出发,通过单步法制备1位取代的2,3,4,9-四氢-1H-β-
吲哚-3-
羧酸酯的过程,其一种首选的对映异构形式。