Voltar
Artigo Acesso aberto Produção Nacional Revisado por pares
BIBTEX RIS

Terpenoids and Steroids from Trichilia Species

2002; Brazilian Chemical Society; Volume: 13; Issue: 3 Linguagem: Inglês

10.1590/s0103-50532002000300014

ISSN

1678-4790

Autores

Mônica Tallarico Pupo, Maria Ângela Tallarico Adorno, Paulo C. Vieira, João B. Fernandes, M. Fátima das G. F. da Silva, José Rubens Pirani,

Tópico(s)

Sesquiterpenes and Asteraceae Studies

Resumo

The methanol extract of stems of Trichilia claussenii yielded three new sesquiterpenoids: 14-hydroxyelemol, germacra-10(14)-en-9,11,15-triol and germacra-3,10(14)-dien-9,11-diol-4-carbaldehyde. Two known sesquiterpenoids beta-eudesmol, cryptomeridiol and the triterpenoid 22,25-dihydroxy-9beta,19-cyclolanost-23-en-3-one were also isolated. The dichloromethane extract from the leaves of T. lepidota afforded a mixture of hydrocarbons (C29H60, C31H64 and C33H68), a mixture of the sesquiterpenes caryophyllene and humulene epoxides, spathulenol, and a series of sterols: 24-methylene-12b-hydroxycholesterol, 24-methyl-12beta-hydroxycholest-4-en-3-one, 24-methylene-12beta-hydroxycholest-5-ene-3-palmitate; a mixture of 24-methylenecholesterol, campesterol, stigmasterol and beta-sitosterol; besides alpha-tocoferol and phytol. From the methanol extract it was isolated N-methyl-4-hydroxyproline. The structures of the isolated compounds were determined on the basis of spectroscopic analysis.

Referência(s)