Chemical review and studies related to species from the genus Tynanthus (Bignoniaceae)

Abstract

Species from the Bignoniaceae Family, including the genus Tynanthus, are very prevalent in the tropical Americas, with specimens found in a large part of the Brazilian territory. These plants are commonly used in traditional medicine for several purposes, and some studies have described their chemical structure, in addition to other reports related to some species from this genus. This review aimed to gather information from published works concerning species of the genus Tynanthus, as well as to detect flaws in research related to these plants, which may have great biological and pharmaceutical importance. Also, this review points out some common chemical characteristics of these species, providing information that may help new researchers to improve their knowledge about these plants.Uniterms: Tynanthus/pharmacognosy. Tynanthus/phytochemistry. Tynanthus/biological activity. Bignoniaceae/pharmacognosy. Bignoniaceae/phytochemistry. Medicinal plants.As espécies da família Bignoniaceae possuem grande predominância na região da América tropical e entre elas, as espécies do gênero Tynanthus, com representantes em grande parte do território brasileiro. Estas plantas são comumente utilizadas na medicina tradicional para os mais diversos fins e algumas pesquisas já descrevem a constituição química além de outros estudos relacionados a alguns integrantes deste gênero. Este trabalho de revisão teve como objetivo reunir informações de trabalhos publicados a respeito das espécies do gênero Tynanthus e permitiu detectar a deficiência nas pesquisas relacionadas a estas plantas, que podem trazer consigo grande importância biológica e farmacológica. Além disto, este trabalho tornou possível apontar algumas características químicas em comum entre as espécies, trazendo informações que podem auxiliar novos pesquisadores que procuram melhorar seus conhecimentos acerca destas plantas.Unitermos: Tynanthus/pharmacognosy. Tynanthus/phytochemistry. Tynanthus/biological activity. Bignoniaceae/pharmacognosy. Bignoniaceae/phytochemistry. Medicinal plants.

Tynanthus micranthus: An efficient antioxidant and tyrosinase activity inductor

“…The analysis of the obtained results suggest that T. micranthus may be used in hypopigmentation diseases, by its increase of tyrosinase activity, which may be due to chemical substances occurring in this species, such as apigenin, according to Cansian et al (2012). Apigenin is cited in a study by Ye at al.…”

“…Mello ex Schum species belongs to the B ignoniaceae family, and is known as "Cipó Cravo" or "Craveiro" (meaning, roughly, "clove vine"). One of the few studies involving this species describes the presence of chemical groups such as flavonoids (dihydroflavonoids and leucoanthocyanidins), steroids, triterpenes and anthraquinonic glycosides, also describing the isolation and identification of β-sitosterol and apigenin on this species (Cansian et al, 2012).…”