Benzofurans and sterol from the seeds of styrax obassia

• DOI: 10.1007/s10600-008-9090-3
• Publication Date: 2008-10-29T10:15:39Z
• Authors: Hak-Ju Lee; Sin Young Park; Oh-Kyu Lee; Hyun-Jin Jo; Ha-Young Kang; Don-Ha Choi; Ki-Hyon Paik; M. Khan
• Keywords: Stigmasterol

Two benzofurans (1, 2) along with five known compounds (3.7) were isolated from the seeds of S. obassia. Their structures were elucidated as methyl 3-[7-methoxy-2-(3′,4′-methylenedioxyphenyl)-5-benzofuranyl]-propionate (1), methyl 3-[2-(3′,4′-methylenedioxyphenyl)-5-benzofuranyl]-propionate (2), egonol (3), egonolacetate (4), egonol-2-methylbutanoate (5), 7-demethoxyegonol-2-methylbutanoate (6), and stigmasterol (7) on the basis of their comprehensive spectroscopic analysis including 2D NMR data. Compounds 1, 2 are obtained for the first time from nature, while this is the first record of compound 7 from the Styrax species.