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In addition to N-acetyl-indoline (2) and N-formylindoline (3), a new N-alkylated derivative of indoline was isolated after incubation with a number of fungal strains. Its structure was elucidated by spectral analysis and comparison with chemically synthetized racemic and optically active 4-hydroxy-2-(N-indolinyl)butane (4).
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Lacroix et al. (1995) studied this question.
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