FIELD: chemistry.
SUBSTANCE: invention relates to field of organic chemistry, namely to polymorphs of form 1 and form 2 of (-)trans-3-(5,6-dihydro-4H-pyrrolo[3,2,1-ij]quinolon-I-yl)-4-(1H-indol-3-yl)pyrrolidin-2,5-dione. Invention also relates to methods of obtaining said polymorphs and pharmaceutical composition on their basis.
EFFECT: novel polymorphs of (-)trans-3-(5,6-dihydro-4H-pyrrolo[3,2,1-ij]quinolon-I-yl)-4-(1H-indol-3-yl)pyrrolidin-2,5-dione are obtained, useful in cancer treatment.
23 cl, 26 dwg, 2 tbl, 27 ex
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