

BIOLOGICAL ACTIVITY AND SYNTHESIS OF 5,6-DIHYDROXYINDOLE-2-CARBOXYLIC ACID – BIOSYNTHETIC PRECURSOR OF MELANINS

Abstract
The microreview considers the biological activity and methods of obtaining natural melanin pigments and their biosynthetic precursor 5,6-dihydroxyindole-2-carboxylic acid. The key methods for the synthesis of 5,6-dihydroxyindole-2-carboxylic acid, published over the past 8 years (2012–
2020), are presented.
2020), are presented.
Keywords
Melanin, indolecarboxylic acid, cancer, antiviral drugs, arbidol, immunodeficiency, coronavirus
Latvian Institute of Organic Synthesis - Aizkraukles iela, 21, Riga, LV-1006, Latvia - hgs@osi.lv