Chemistry of Natural Compounds

, Volume 29, Issue 4, pp 462–466 | Cite as

Mass spectra of pseudoguaianolides related to carpesiolin

  • V. N. Plugar'
  • Ya. V. Rashkes
  • A. Ovezdurdyev
  • I. D. Sham'yanov


The main directions of fragmentation and the EI of six pseudoguaianolides related to carpesiolin have been studied. It has been established that acylation of the OH group at C-6 suppresses the selective breakdown of the guaiane skeleton, while the simultaneous presence of AcO groups at C-2 and C-4 favors the formation of a number of characteristic ions. The hydrogenation of the exomethylene group has no appreciable influence on direction of fragmentation.


AcOH Lactone Ring Main Fragment Sodium Tetrahydroborate Acyl Substituent 


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Copyright information

© Plenum Publishing Corporation 1994

Authors and Affiliations

  • V. N. Plugar'
  • Ya. V. Rashkes
  • A. Ovezdurdyev
  • I. D. Sham'yanov

There are no affiliations available

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