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Characteristics of the mass spectra of ecdysteroids with different numbers of -OR groups

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Abstract

The mass spectra of 15 phytoecdysteroids and acetyl derivatives have been compared. With a decrease in the number of -OR groups, the contribution of cleavages of the bonds of the steroid skeleton increases. 20,22-Diols are characterized by the greatest significance of fragmentation at the C-20–C-22 bond. In all the spectra, clear indications of fragmentation of the side chain at the C-22–C-23, C-23–C-24, and C-24–C-25 bonds are observed.

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Authors
  1. Ya. V. Rashkes
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  2. N. K. Abubakirov
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Additional information

Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 518–528, July–August, 1980.

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Rashkes, Y.V., Abubakirov, N.K. Characteristics of the mass spectra of ecdysteroids with different numbers of -OR groups. Chem Nat Compd 16, 372–381 (1980). https://doi.org/10.1007/BF00568371

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  • DOI: https://doi.org/10.1007/BF00568371

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