2001quinones quinones (naphthalene compounds) Q 0910
-079Chemistry of Naphthazarin Derivatives. Part 8. Determination of Structures of Substituted 2-Hydroxy-6(7)-methoxynaphthazarins and 7(8)-Hydroxypyranonaphthazarins by IR Spectroscopy.-Several pairs of substituted 2-hydroxy-6 (7)-methoxynaphthazarins [cf. (III), (VI)] and 7(8)-hydroxypyranonaphthazarins [cf. (IX)] are synthesized and characterized by IR-spectroscopy. Their spectroscopic regularities confirm the structures of cristazarin (VIb) and its 6-methyl-analogue, which are metabolites of a lichen species. -(GLAZUNOV, V. P.; TCHIZHOVA, A. YA.; SHESTAK, O. P.; SOPEL'NYAK, G. I.; ANUFRIEV, V. PH.; Russ. Chem. Bull. 50 (2001) 1, 95-100; Pac. Inst. Bio-Org. Chem., Russ. Acad. Sci., Vladivostok 690022, Russia; EN)
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