Structure of Phomozin - Ester of Dimethylglyceric Acid and O-orsellinic Acid - a New Phytotoxin From the Phytopathogenic Fungus Phomopsis-helianthi

Declercq, Jean-Paul;Klaebe, A.;Rossignol, Mandy;Mazars, C.
(1991) Acta Crystallographica. Section C: Crystal Structure Communications — Vol. 47, p. 470-472 (1991)

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  • Declercq, Jean-PaulUCLouvain
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  • Klaebe, A.
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  • Rossignol, MandyUCLouvain
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  • Mazars, C.
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Abstract
2,3-Dimethyl-3-(o-orsellinoyl)lactic acid, C13H16O7.H2O, M(r) = 302.28, triclinic, Pl, a = 6.465 (1), b = 6.801(1), c = 16.951 (4) angstrom, alpha = 89.97 (2), beta = 88.00 (2), gamma = 76.54 (2)-degrees, V = 724.4 (3) angstrom 3, Z = 2, D(x) = 1.39 g cm-3, Cu K-alpha, lambda = 1.54178 angstrom, mu = 10.1 cm-1, F(000) = 320, T = 291 K, R = 0.040 for 3315 observed reflections. A new phytotoxin, phomozin, isolated from culture filtrates of Phomopsis helianthi [Muntanola-Cvetkovic, Mihaljcevic & Petrov (1981). Nova Hedwigia Z. Kryptogamenkd. 34, 417-435] was purified by high-pressure liquid chromatography using both liquid-solid and ion-pair liquid chromatographies. The two molecules have identical configurations. Intra-molecular hydrogen bonds appear between O(15)...O(17) and O(18)...O(19).
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Declercq, J.-P., Klaebe, A., Rossignol, M., & Mazars, C. (1991). Structure of Phomozin - Ester of Dimethylglyceric Acid and O-orsellinic Acid - a New Phytotoxin From the Phytopathogenic Fungus Phomopsis-helianthi. Acta Crystallographica. Section C: Crystal Structure Communications, 47, 470-472. https://doi.org/10.1107/S0108270190009234 (Original work published 1991)