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Thuong Phuong Thien,Jin WenYi,Lee JongPill,Seong RackSeon,Lee Young-Mi,Seong YeonHee,Song KyungSik,Bae KiHwan The Pharmaceutical Society of Korea 2005 Archives of Pharmacal Research Vol.28 No.10
Twelve compounds were isolated from the MeOH extract of the leaf and stem of the Korean endemic plant Weigela subsessilis L. H. Bailey. Their chemical structures were elucidated on the basis of physicochemical and spectroscopic data and by comparison with those of published literatures. These compounds were identified as three sterols, ${\beta}$-sitosterol acetate (2), ${\beta}$-sitosterol (3), daucosterol (11), eight triterpenoids, squalene (1), ursolic acid (4), ilekudinol A (5), corosolic acid (6), ilekudinol B (7), esculentic acid (8), pomolic acid (9), asiatic acid (10), and one iridoid glycoside, alboside I (12). This is the first report pertaining to the isolation of these compounds from Weigela subsessilis L. H. Bailey. In addition, three compounds 7, 9, and 12 were found to display a strong inhibitory effect on the production of IL-8 in the HT29 cells stimulated by TNF-${\alpha}$.
Phuong Thien Thuong,WenYi Jin,JongPill Lee,RackSeon Seong,Young-Mi Lee,성연희,KyungSik Song,배기환 대한약학회 2005 Archives of Pharmacal Research Vol.28 No.10
Twelve compounds were isolated from the MeOH extract of the leaf and stem of the Korean endemic plant Weigela subsessilis L. H. Bailey. Their chemical structures were elucidated on the basis of physicochemical and spectroscopic data and by comparison with those of published literatures. These compounds were identified as three sterols, β-sitosterol acetate (2), β- sitosterol (3), daucosterol (11), eight triterpenoids, squalene (1), ursolic acid (4), ilekudinol A (5), corosolic acid (6), ilekudinol B (7), esculentic acid (8), pomolic acid (9), asiatic acid (10), and one iridoid glycoside, alboside I (12). This is the first report pertaining to the isolation of these compounds from Weigela subsessilis L. H. Bailey. In addition, three compounds 7, 9, and 12 were found to display a strong inhibitory effect on the production of IL-8 in the HT29 cells stimulated by TNF-α.
Anti-complementary Activity of Ursane-Type Triterpenoids from <i>Weigela subsessilis</i>
Thuong, Phuong Thien,Min, Byung-Sun,Jin, WenYi,Na, MinKyun,Lee, JongPill,Seong, RackSeon,Lee, Young-Mi,Song, KyungSik,Seong, YeonHee,Lee, Hyeong-Kyu,Bae, KiHwan,Kang, Sam Sik Pharmaceutical Society of Japan 2006 Biological & pharmaceutical bulletin Vol.29 No.4
<P>A new ursane-type triterpenoid, weigelic acid (1), and seven known compounds, ursolic acid (2), ilekudinol A (3), corosolic acid (4), ilekudinol B (5), esculentic acid (6), pomolic acid (7), and asiatic acid (8) were isolated from the leaf and stem of <I>Weigela subsessilis</I>. The structure of the new triterpenoid was established as 1β,2α,3α,23-tetrahydroxyurs-12-en-28-oic acid on the basis of spectroscopic analyses. In addition, the isolated compounds were evaluated for their anti-complement activity against the classical pathway of the complement system. Of these, compounds 1—2 and 4—8 exhibited anti-complement activity with IC<SUB>50</SUB> values of 152, 90, 130, 51, 56, 4, and 163 μ<SMALL>M</SMALL>, respectively, whereas 3 was inactive. This shows that a carboxylic group of ursane-type triterpenoids seems to play an important role in inhibiting the hemolytic activity of human serum against erythrocytes.</P>