http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Excavasides A and B, two new flavonoid glycosides from <i>Clausena excavata</i> Burm. f. (Rutaceae)
Seo, Changon,Ahn, Eun-Kyung,Kang, Jae-Shin,Lee, Jae-Ho,Oh, Joa Sub,Hong, Seong Su Elsevier 2017 PHYTOCHEMISTRY LETTERS Vol.20 No.-
<P><B>Abstract</B></P> <P>Two new flavonoid glycosides, excavaside A (<B>1</B>) and B (<B>2</B>), together with 14 known compounds, myricetin 3-<I>O</I>-β-<SMALL>D</SMALL>-rutinoside (<B>3</B>), myricetin 3,3′-di-α-<SMALL>L</SMALL>-rhamnopyranoside (<B>4</B>), myricetin 3′-α-<SMALL>L</SMALL>-rhamnopyranoside (<B>5</B>), myricitrin (<B>6</B>), myricetin (<B>7</B>), quercitrin (<B>8</B>), clauslactone B (<B>9</B>), clauslactone A (<B>10</B>), murrayacoumarin C (<B>11</B>), clauslactone E (<B>12</B>), triphasiol (<B>13</B>), clauslactone P (<B>14</B>), seseline (<B>15</B>), and 5-geranyloxy-7-hydroxycoumarin (<B>16</B>) have been isolated from the ethanol extract of the leaves and twigs of <I>Clausena excavata</I>. Among them, compounds <B>3</B>–<B>5</B> and <B>13</B> were isolated and identified from this plant for the first time. The structures of the new compounds were established by spectroscopic data interpretation, particularly HRESIMS, 1D and 2D NMR data including HSQC and HMBC. Also, those of the known compounds were identified by spectral comparison with those of the reported values.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Sixteen compounds, including two new flavonoid glycosides were isolated from the leaves and twigs of <I>Clausena excavata</I>. </LI> <LI> Four compounds were reported from <I>Clausena excavata</I> for the first time. </LI> <LI> Structure elucidation was based on spectroscopic techniques (1D-, 2D-NMR, and HRMS experiments). </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Studies on Phytochemical Constituents from the Black Ginseng (Ginseng Radix nigra)
Changon Seo(서찬곤),Jin Kyu Kim(김진규),Seong Su Hong(홍성수),Jin Gwan Kwon(권진관),Chun Whan Choi(최춘환),Wonsik Jeong(정원식),Yun-Hyeok Choi(최윤혁),Junho Oh(오준호),Ji Hye Lee(이지혜),Joa Sub Oh(오좌섭) 한국약용작물학회 2014 한국약용작물학회 학술대회논문집 Vol.2014 No.2
초과로 부터 Amotsaokonal A-C, Benzaldehyde, Cycloterpenal의 성분분리
WonSik Jeong,Seong Su Hong,Changon Seo,Jin Gwan Kwon,Eun Kyung Ahn,Ju Hyeong Park,Hana Cho,Joa Sub Oh 한국약용작물학회 2016 한국약용작물학술대회 발표집 Vol.2016 No.10
Background : Amomum tsao-ko (Zingiberaceae) is widely distributed among several countries in Asia. It’s dried fruit is widely used in Korea for medical plant, China and Japan for the treatment of dyspepsia, eliminates, vomiting, abdominal pain, phlegm, warms the spleen, and malaria. In this study, we describe the structural determination of the new compounds and the inhibitory activities of isolated compounds against LPS-induced NO production in RAW264.7 cells. Methods and Results : The fruits of A. tsao-ko were extracted with 80% EtOH two times at room temperature. The EtOH extract was suspended in distilled water and partitioned with solvent to give CH2Cl2, EtOAc and n-BuOH. The CH2Cl2 was suspended in n-hexane and partitioned with solvent to give 50%, 70% and 90% MeOH. The purification of each fraction by column chromatography separation and HPLC analysis. Consequently, one new benzaldehyde (1) and two new cycloterpenals (2 and 3) along with five known compounds (4 –8) have been isolated from the fruits of A. tsao-ko. The structure and relative stereochemistry were determined from HRMS, 1D and extensive 2D NMR techniques as well as by comparison of their data with the published values. Conclusion : These compounds were identified as Amotsaokonal A (1), Amotsaokonal B (2), Amotsaokonal C (3), methyl linolenate (4), trans-nerolidol (5), (2E)-dodecenyl acetate (6), (2E)-dodecenyl acetate (7), and pyrrole-2-carboxylic acid (8). All isolates were tested for their inhibitory activities on LPS-induced nitric oxide production in RAW264.7 cells.
Won Sik Jeong,Seong Su Hong,Changon Seo,Jin Gwan Kwon,Eun Kyung Ahn,Ju Hyeong Park,Hana Cho,Joa Sub Oh 한국약용작물학회 2016 한국약용작물학술대회 발표집 Vol.2016 No.10
Background : The objective of this study was to Amomum tsao-ko Crevost et Lemarié, (Zingiberaceae) is widely distributed among several countries in South Asia and Southeast Asia. It is a well known spice in Asia, produces a nice refreshing effect in the mouth. Additionally, it's dried fruit is used in Traditional Chinese Medicine (TCM) for cardiac diseases, edema, eye trouble, skin, itch and impotence. The objective of this study was evaluated the inhibitory activity on adipogenesis in 3T3-L1 cells from A. tsao-ko. Methods and Results : The fruits of A. tsao-ko were extracted with 80% EtOH two times at room temperature. The EtOH extract was suspended in distilled water and partitioned with solvent to give CH2Cl2, EtOAc and n-BuOH. The CH2Cl2 was suspended in n-hexane and partitioned with solvent to give 50%, 70% and 90% MeOH. The purification of each fraction by column chromatography separation and HPLC analysis. Consequently, several constituents were isolated five known compounds. The identification and structural elucidation of compounds were established by using NMR (1D and 2D) and mass spectrometry. Conclusion : These compounds were identified as fluorenone (1), phenanthrene (2), anthracene (3), methyl linolenate (4), 1,2-benzenediol (5). All isolates were tested for their inhibitory activities on adipogenesis in 3T3-L1 cells.