However, Perkin claimed (without citing a source) that Chevreul had isolated luteolin as early as 1814–1815. See: Perkin, Arthur George; Everest, Arthur Ernest (1918). The Natural Organic Colouring Matters. London, England: Longmans, Green and Co. p. 4.
Chevreul, M.E. (1829). "30e Leçon, Chapitre XI. De la Gaude. [30th lesson. Chapter 11. On Weld (i.e., the plant Reseda luteola, which provides a yellow dye)]". Leçons de Chimie Appliquée à la Teinture [Lessons on Chemistry Applied to Dyeing] (in French). Paris, France: Pichon et Didier. pp. 143–148. Chevreul named luteolin on p. 144: "J'ai fait des recherches sur la composition de la gaude, j'ai obtenu le principe colorant critalisé par sublimation; je l'ai nommé lutéolin." (I have done some research on the composition of weld; I obtained the principal colorant [which I] crystallized via sublimation; I have called it "luteolin".)
Hlasiwetz, H.; Pfaundler, L. (1865). "Ueber das Morin, Maclurin und Quercitrin". Journal für praktische Chemie (in German). 94: 65–106. doi:10.1002/prac.18650940112. Hlasiwetz and Pfaundler melted quercitrin with potassium carbonate. Among the reaction's products, they found paradatiscetin, whose empirical formula they determined to be C15H10O6 (p. 94). They concluded that although luteolin and paradatiscetin were isomeric (i.e., had the same empirical formula), they were distinct compounds. From p. 94: "Das Luteolin scheint demnach wohl als isomer oder metamer mit unserer Substanz betrachtet werden zu können. Eine Identität beider liegt jedoch nicht vor, denn an einer Probe Luteolin fanden wir die charakteristischen Farben-reactionen nicht, welche das Paradatiscetin kaum verwechseln lassen." (Luteolin thus seems to be able to be regarded perhaps as an isomer or metamer of our substance [viz, paradatiscetin]. However, the two are evidently not identical, for upon a test of luteolin, we did not find the characteristic color reactions, which hardly allows paradatiscetin to be confused [with it].)
López-Lázaro M. (2009). "Distribution and biological activities of the flavonoid luteolin". Mini Rev Med Chem. 9 (1): 31–59. doi:10.2174/138955709787001712. PMID19149659.
Lee, D; Cuendet, M; Vigo, JS; et al. (2001). "A novel cyclooxygenase-inhibitory stilbenolignan from the seeds of Aiphanes aculeata". Organic Letters. 3 (14): 2169–71. doi:10.1021/ol015985j. PMID11440571.
Hlasiwetz, H.; Pfaundler, L. (1864). "Über das Morin, Maclurin und Quercitrin". Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe. (Part 2) (in German). 50: 6–59. ; see pp. 44–45.
López-Lázaro M. (2009). "Distribution and biological activities of the flavonoid luteolin". Mini Rev Med Chem. 9 (1): 31–59. doi:10.2174/138955709787001712. PMID19149659.
Lee, D; Cuendet, M; Vigo, JS; et al. (2001). "A novel cyclooxygenase-inhibitory stilbenolignan from the seeds of Aiphanes aculeata". Organic Letters. 3 (14): 2169–71. doi:10.1021/ol015985j. PMID11440571.
Hlasiwetz, H.; Pfaundler, L. (1865). "Ueber das Morin, Maclurin und Quercitrin". Journal für praktische Chemie (in German). 94: 65–106. doi:10.1002/prac.18650940112. Hlasiwetz and Pfaundler melted quercitrin with potassium carbonate. Among the reaction's products, they found paradatiscetin, whose empirical formula they determined to be C15H10O6 (p. 94). They concluded that although luteolin and paradatiscetin were isomeric (i.e., had the same empirical formula), they were distinct compounds. From p. 94: "Das Luteolin scheint demnach wohl als isomer oder metamer mit unserer Substanz betrachtet werden zu können. Eine Identität beider liegt jedoch nicht vor, denn an einer Probe Luteolin fanden wir die charakteristischen Farben-reactionen nicht, welche das Paradatiscetin kaum verwechseln lassen." (Luteolin thus seems to be able to be regarded perhaps as an isomer or metamer of our substance [viz, paradatiscetin]. However, the two are evidently not identical, for upon a test of luteolin, we did not find the characteristic color reactions, which hardly allows paradatiscetin to be confused [with it].)
