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Bis‐indolic Alkaloids of Catharanthus ovalis Vindolicine and fourteen bis‐indolic alkaloids of the vinblastine group have been isolated from the aerial parts of Catharanthus ovalis MGF. Three of them: vincovaline, vincovalinine and vincovalicine had not been previously isolated from a Catharanthus species.
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Langlois et al. (1980) studied this question.
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