Summary
The alkaloids ofMerendera iolantae E. Czerniak have been studied for the first time. The total alkaloids consist of tropolone compounds and bases without a tropolone ring. From this plant we isolated the known alkaloids colchicine, colchamine, β-lumicolchicine, colchameine, and 2-demethylcolchiceine, and four new, nontropolone, bases — MI-1 (iolantamine), MI-2, MI-3, and MI-4. The presence of colchiceine, 3-demethylcolchamine, and two unknown bases with R f 0.49 and 0.53 was shown by chromatographic methods.
A developed formula has been put forward for iolantamine on the basis of its spectral characteristics.
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Additional information
V. I. Lenin Tashkent State University. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 487–493, July–August, 1972.
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Zuparova, K.M., Chommadov, B., Yusupov, M.K. et al. Alkaloids of Merendera iolantae. Chem Nat Compd 8, 481–485 (1972). https://doi.org/10.1007/BF00563674
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DOI: https://doi.org/10.1007/BF00563674