Summary
The dissociative ionization of four linear dihydropyranocoumarins and three of their deuterium analogs has been studied. It has been shown that by means of the mass-spectrometric method it is possible to determine the type of linkage of the dihydropyrane ring with the coumarin ring for each pair of linear and angular isomers in this series of substances, to determine the presence of hydroxy or methoxy groups in position 4′ of their molecules, and to distinguish the presence of the acyl residue of senecioic acid from that of angelic acid in the products of the partial hydrolysis and methanolysis of 3′,4′-diacyloxydihydropyranocoumarins.
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Literature cited
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Additional information
M. V. Lomonosov Moscow State University. Patrice Lumumba University of Peoples' Friendship, Moscow. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 38–44, January–February, 1977.
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Zakharov, P.I., Terent'ev, P.B., Nikonov, G.K. et al. Mass-spectrometric distinction of linear and angular 3′,4′-dihydroxy-substituted dihydropyranocoumarins and their derivatives. Chem Nat Compd 13, 32–37 (1977). https://doi.org/10.1007/BF00566165
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DOI: https://doi.org/10.1007/BF00566165