
Androstane and pregnane 2β,19-hemiketal steroids from Trichilia claussenii
1997; Elsevier BV; Volume: 45; Issue: 7 Linguagem: Inglês
10.1016/s0031-9422(97)00167-2
ISSN1873-3700
AutoresMônica Tallarico Pupo, Paulo C. Vieira, João B. Fernandes, Maria Fátima das Graças Fernandes da Silva, Edson Rodrigues Fo,
Tópico(s)Plant biochemistry and biosynthesis
ResumoThe methanol extract of stems of Trichilia claussenii yielded three new steroids: 2α,3α-dihydroxyandrostan-16-one 2β,19-hemiketal, 2α,3β-dihydroxypregnan-16-one 2β,19-hemiketal, 2β,3β-dihydroxypregnan-16-one. Two known steroids 2β,3β,4β-trihydroxypregnan-16-one, 2α,3α,4β-trihydroxypregnan-16-one and a mixture of sitosterol and stigmasterol β-O-d-glucopyranosides were also isolated. The structures of the isolated compounds were determined on the basis of spectroscopic analysis. © Elsevier Science Ltd. All rights reserved
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