Natural products isolation studies of the paleoendemic plant species Nothofagus gunnii and Nothofagus cunninghamii

Autor: Thinley Gyeltshen, Jason A. Smith, Alex C. Bissember, Gregory J. Jordan
Rok vydání: 2022
Předmět:
Zdroj: Fitoterapia. 156:105088
ISSN: 0367-326X
DOI: 10.1016/j.fitote.2021.105088
Popis: The first natural product isolation studies of Nothofagus gunnii (Hook.f.) Oerst and Nothofagus cunninghamii (Hook.f.) Oerst have been undertaken. A previously unreported stilbene derivative, pinosylvin monoacetate, was isolated from the leaves of N. gunnii, in addition to 14 known compounds; including the flavonoids galangin, pinobanksin, catechin and quercetin; sesquiterpenoids such as, ilicol and (+)-β-costol acetate; 2,4-dihydroxy-6-methoxychalcone and pinosylvin. Four known flavonoid natural products, catechin, quercetin, ayanin, and avicularin were isolated from the leaves of N. cunninghamii. This study reveals that N. gunnii is a rich source of flavonoid, chalcone and stilbene compounds, while primarily hydroxyflavonoid compounds are found in N. cunninghamii. The isolated phytochemicals are consistent with the evolutionary relationships suggested to exist among Nothofagus species.
Databáze: OpenAIRE