RESUMO
[structures: see text] A seven-step synthesis of (+)-6beta-isovaleryloxylabda-8,13-diene-7alpha,15-diol has been achieved starting from (+)-larixol; this allowed determination of the absolute configuration of the metabolite isolated from the mucus of Trimusculus reticulatus.
Assuntos
Moluscos/metabolismo , Naftalenos/síntese química , Ácidos Pentanoicos/síntese química , Animais , Muco/química , Naftalenos/química , Ácidos Pentanoicos/química , EstereoisomerismoRESUMO
Phytochemical investigation of Bacopa procumbens afforded two new phenolic glycosides 1 and 2, for the first time, along with 12 known compounds 3-14. Structures of these compounds were established based on spectral and chemical evidences.
Assuntos
Bacopa/química , Espectroscopia de Ressonância MagnéticaRESUMO
From the ethanolic extract of stem bark of D. angustifolia three new compounds, a coumaroyl triterpene lactone, diospyrosooleanolide (1), a phenolic glycoside, diospyrososide (2) and a naphthalene glycoside, diospyrosonaphthoside (3) were isolated along with five known compounds (4-8). The structures of these compounds were established on the basis of spectroscopic and chemical evidences.
