Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Kwang Sik Im"'
Publikováno v:
Journal of Natural Products. 69:1399-1403
Six new phenylethanoid glucosides, ternstrosides A-F (1-6), a new kaempferol derivative (7), and eight known compounds were isolated from the fresh leaves of Ternstroemia japonica. The structures were elucidated by 1D and 2D NMR spectroscopic analyse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dfb9a3759d72b779bb09a25c079b7ae6
https://doi.org/10.1021/np060096w
https://doi.org/10.1021/np060096w
Publikováno v:
Journal of Natural Products. 69:567-571
By a bioactivity-guided fractionation, seven new oxylipins, topsentolides A(1)-C(2) (1-7), were isolated from the MeOH extract of a marine sponge Topsentia sp. Detailed NMR and MS analyses established the planar structures of these structurally relat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7212bd0c3de2aa3355f3342194592b0
https://doi.org/10.1021/np0503552
https://doi.org/10.1021/np0503552
Publikováno v:
Lipids. 40:981-985
Fractionation of the MeOH extract of Homaxinella sp., a marine sponge, led to the isolation of a sodium salt of a new brominated FA (1), two new MG (2 and 4), and a new lysoPC (6). The geometry of the double bonds in 1 and 2 was defined by comparison
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d14bc506ffcd9a841d36724ef840f895
https://doi.org/10.1007/s11745-005-1459-0
https://doi.org/10.1007/s11745-005-1459-0
Publikováno v:
Archives of Pharmacal Research. 28:885-888
Jacaranone and related compounds (1-3) were isolated, along with three triterpenes (4-6), from the fresh fruits of Ternstroemia japonica. The compounds were identified as jacaranone (1), 3-hydroxy-2,3-dihydrojacaranone (2), 3-methoxy-2,3-dihydrojacar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a15b01209ee3116c579ccf0c9589543
https://doi.org/10.1007/bf02973871
https://doi.org/10.1007/bf02973871
Autor:
Kwang Sik Im, Xin-Sheng Yao, Jongki Hong, Chong-O. Lee, Baoquan Bao, Qishi Sun, Chung Ja Sim, Jee H. Jung
Publikováno v:
Journal of Natural Products. 68:711-715
Three new bisindole alkaloids of the hamacanthin class (1-3) and one new bisindole alkaloid of the topsentin class (6) were isolated along with known bisindole alkaloids (4, 5, 7-11) from the MeOH extract of a marine sponge Spongosorites sp. by bioac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::364c5c2faced1ebbb208f94f530f9943
https://doi.org/10.1021/np049577a
https://doi.org/10.1021/np049577a
Publikováno v:
Journal of Natural Products. 68:331-336
A bioactivity-guided fractionation of a marine sponge Homaxinella sp. has led to the isolation of three new (1-3) highly degraded sterols and four new 6-O-alkylated (6-9) sterols, along with known sterol derivatives. The degraded sterols (1-5) belong
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29ca4957fd5a1839e78b852523e70dfd
https://doi.org/10.1021/np0496690
https://doi.org/10.1021/np0496690
Autor:
Jee H. Jung, Jongki Hong, Weihong Wang, Song-Ja Bae, Kwang Sik Im, Chong-Ok Lee, Hyo-Jin Jang
Publikováno v:
Journal of Natural Products. 67:1654-1660
Twelve new (1-7, 9-13) polyhydroxysterols and two new saponins (14 and 15) were isolated from the starfish Certonardoa semiregularis by activity-guided fractionation. Compounds 1-7 are rare examples of 15-keto steroids from starfish. The side chain o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ec18ec2fa35ffe04774c52d1e49a6f6
https://doi.org/10.1021/np049869b
https://doi.org/10.1021/np049869b
Publikováno v:
Journal of Natural Products. 66:1351-1355
Three new triterpenoidal monodesmosides (1-3) and three new triterpenoidal bisdesmosides (4-6), together with two known saponins (7 and 8), were isolated from the fresh fruits of Ternstroemia japonica. The structures of 1-6 (ternstroemiasides A-F) we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3daa216bd6d351bb4dc5b7ef12c43155
https://doi.org/10.1021/np0301644
https://doi.org/10.1021/np0301644
Autor:
Jee H. Jung, Jongki Hong, Famei Li, Sook Shin, Kwang Sik Im, Weihong Wang, Yujin Park, Chong-Ok Lee, Jae Yang Kong
Publikováno v:
Journal of Natural Products. 66:384-391
Thirteen new polyhydroxysterols (1-5, 7-12, 14, 15) and two known polyhydroxysterols (6, 13) were isolated from the brine shrimp active fraction of the starfish Certonardoa semiregularis. The structures were determined on the basis of spectral analys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f567854dcb9087439197665da33e2863
https://doi.org/10.1021/np020507i
https://doi.org/10.1021/np020507i
Autor:
Kwang Sik Im, Jung Hwa Lee, Su Bog Yee, Nam Deuk Kim, Song Ja Bae, Jae Soo Choi, Hae Young Chung
Publikováno v:
Archives of Pharmacal Research. 26:151-156
We investigated the anti-proliferative effects of luteolin and apigenin, isolated from Ixeris sonchifolia Hance, on HepG2 human hepatocellular carcinoma cells. In MTT assay luteolin showed more efficient anti-proliferative effects on cells than apige
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e2fee97777f102782b31e954524486f
https://doi.org/10.1007/bf02976662
https://doi.org/10.1007/bf02976662