[Synthesis of eumelanin pigment precursors. II. 6-hydroxy-5-methoxy- and 5-hydroxy-6- methoxyindole]. 1989

E Bubnová, and A Budĕsínská, and Z Schwippelová, and B Matous, and T Trnka
II. Ustav lékarské chemie a biochemie fakulty vseobecného lékarství, Univerzity Karlovy, Praha.

Following up of specific melanogenesis metabolite excretion in the course of malignant melanoma disease is useful for the disease prognosis assessment. The authors elaborated a modified synthesis technique of 6-hydroxy-5-methoxy and 5-hydroxy-6-methoxyindole, eumelanin pigment precursors. The elaborated synthesis is economically and temporally reasonable and the synthesized compounds accord, as proved by means of elementary analysis, thin layer (TLC) and high performance liquid chromatography (HPLC) and last but not least by nuclear magnetic resonance (NMR), with demands for reference compounds needed for isomer hydroxymethoxyindole quantification in urine.

UI MeSH Term Description Entries
D007211 Indoles Benzopyrroles with the nitrogen at the number one carbon adjacent to the benzyl portion, in contrast to ISOINDOLES which have the nitrogen away from the six-membered ring.
D008543 Melanins Insoluble polymers of TYROSINE derivatives found in and causing darkness in skin (SKIN PIGMENTATION), hair, and feathers providing protection against SUNBURN induced by SUNLIGHT. CAROTENES contribute yellow and red coloration. Allomelanins,Melanin,Phaeomelanins

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