Search Results - "Qiu, Samuel X"

Two new cytotoxic stilbenoid dimers isolated from Cajanus cajan by Zhang, Nenling, Shen, Xiangchun, Jiang, Xiaofei, Cai, Jiazhong, Shen, Xiaoling, Hu, Yingjie, Qiu, Samuel X.

“…Two new stilbenoid dimers, cajanstilbenoids A ( 1 ) and B ( 2 ), were isolated from the leaves of Cajanus cajan . Planar structures of these compounds were…”
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A New Anthraquinone and Two New Tetrahydroanthraquinones from the Roots of Prismatomeris connata by Feng, Shi-Xiu, Hao, Jing, Chen, Tao, Qiu, Samuel X. ;(Shengxiang)

“…A new anthraquinone, 4‐hydroxy‐1,2,3‐trimethoxy‐6‐methylanthracene‐9,10‐dione (1), and two novel tetrahydroanthraquinones, prisconnatanones A and B (2 and 3,…”
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Chemical Constituents from Roots of Millettia speciosa by Fu, Man-qin, Xiao, Geng-sheng, Xu, Yu-juan, Wu, Ji-jun, Chen, Yu-long, Qiu, Samuel-X

“…Objective To study the chemical constituents from the roots of Millettia speciosa.Methods The chemical constituents were isolated and purified by silica gel,…”
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Skeleton-rearranged pentacyclic diterpenoids possessing a cyclobutane ring from Euphorbia wallichii by Pan, Li, Zhou, Ping, Zhang, Xiaofeng, Peng, Shulin, Ding, Lisheng, Qiu, Samuel X

“…[structure: see text] Two novel rearranged trachylobane diterpenoids, designated as wallichanol A (2) and wallichanol B (3), consisting of an unprecedented…”
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Heteroatom-containing antibacterial phenolic metabolites from a terrestrial Ampelomyces fungus by Zhang, H.(Chinese Academy of Sciences, Guangzhou (China). South China Botanical Garden), Xie, H, Qiu, S.X, Xue, J, Wei, X

“…Two new sulfur-containing phenolic compounds, 7-hydroxy-5-hydroxymethyl-2H-benzo[1,4]thiazin-3-one (1) and 2,5-dihydroxy-3-methanesulfinylbenzyl alcohol (2),…”
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Herbal hepatotoxicity by kava: Update on pipermethystine, flavokavain B, and mould hepatotoxins as primarily assumed culprits by Teschke, Rolf, Qiu, Samuel X, Lebot, Vincent

“…Abstract Herbal hepatotoxicity by the anxiolytic kava ( Piper methysticum Forst. f.) emerged unexpectedly and was observed in a few patients worldwide. Liver…”
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Cimicifoetisides A and B, two cytotoxic cycloartane triterpenoid glycosides from the rhizomes of Cimicifuga foetida, inhibit proliferation of cancer cells by Sun, Li-Rong, Qing, Chen, Zhang, Yan-Li, Jia, Shu-Yu, Li, Zhong-Rong, Pei, Shen-Ji, Qiu, Ming-Hua, Gross, Michael L, Qiu, Samuel X

“…Two new cycloartane-type triterpene glycosides, namely cimicifoetisides A (1) and B (2), along with seven known compounds cimigenol, 25-O-acetylcimigenol,…”
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Cucurbitacins and cucurbitane glycosides: structures and biological activities by Chen, Jian Chao, Chiu, Ming Hua, Nie, Rui Lin, Cordell, Geoffrey A, Qiu, Samuel X

“…The natural cucurbitacins constitute a group of triterpenoid substances which are well-known for their bitterness and toxicity. Structurally, they are…”
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Kava and Kava Hepatotoxicity: Requirements for Novel Experimental, Ethnobotanical and Clinical Studies Based on a Review of the Evidence by Teschke, Rolf, Qiu, Samuel X, Xuan, Tran Dang, Lebot, Vincent

“…Kava hepatotoxicity is a well described disease entity, yet there is uncertainty as to the culprit(s). In particular, there is so far no clear evidence for a…”
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Inhibition of autophagy augments the anticancer activity of α-mangostin in chronic myeloid leukemia cells by Chen, Jia-Jie, Long, Zi-Jie, Xu, Dong-Fan, Xiao, Ruo-Zhi, Liu, Ling-Ling, Xu, Zhi-Fang, Qiu, Samuel X., Lin, Dong-Jun, Liu, Quentin

“…Abstract Natural products possessing anticancer activity have been extensively studied because of their low toxicity and potential effect. α-Mangostin, a…”
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Polyprenylated isoflavanone and isoflavonoids from Ormosia henryi and their cytotoxicity and anti-oxidation activity by Feng, Shixiu, Hao, Jing, Xu, Zhifang, Chen, Tao, Qiu, Samuel X. (Shengxiang)

“…A rare naturally-occurring polyprenylated isoflavanone, designated ormosinol ( 1), and a new isoflavonoid glycoside, named ormosinoside ( 2), along with 21…”
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Interaction of pseudolaric acid B with the colchicine site of tubulin by Sarkar, Taradas, Nguyen, Tam Luong, Su, Zhi-Wei, Hao, Jun, Bai, Ruoli, Gussio, Rick, Qiu, Samuel X., Hamel, Ernest

“…We purified pseudolaric acid B (PAB) from the root and stem bark of Pseudolarix kaempferi (Lindl.) Gorden. Confirming previous findings, we found that the…”
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A new flavanocoumarin from the root of Flemingia philippinensis by Fu, Manqin, Deng, Dun, Huang, Riming, Zhang, Nenling, Su, Zhiwei, Qiu, Samuel X.

“…One new flavanocoumarin, flemicoumarin A (1) was isolated from the EtOAc-soluble partition of the root of Flemingia philippinensis, along with three known…”
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A new xanthone from the pericarp of Garcinia mangostana by Fu, Manqin, Qiu, Samuel X, Xu, Yujuan, Wu, Jijun, Chen, Yulong, Yu, Yuanshan, Xiao, Gengsheng

“…A new prenylxanthone, garcimangostanol (1), was isolated from the EtOAc-soluble partition of the ethanol extract of the pericarp of Garcinia mangostana L.,…”
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Isolation and anti-inflammatory activity evaluation of triterpenoids and a monoterpenoid glycoside from Harpagophytum procumbens by Qi, Jin, Li, Na, Zhou, Jia-Hong, Yu, Bo-Yang, Qiu, Samuel X

“…A new triterpenoid glycoside, designated harproside (1), and a new iridoid glycoside, named pagide (2), along with six known triterpenoids (3-8), were obtained…”
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Iridoid glycosides from Harpagophytum procumbens D.C. (devil’s claw) by Qi, Jin, Chen, Ji-Jun, Cheng, Zhi-Hong, Zhou, Jia-Hong, Yu, Bo-Yang, Qiu, Samuel X.

“…Two iridoid glycosides, harprocumbide A and harprocumbide B were isolated from tubers of Harpagophytum prucumbens D.C., along with nine known iridoid…”
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A New Prenylated Isoflavone and a New Flavonol Glycoside from Flemingia philippinensis by Fu, Manqin, Feng, Shixiu, Zhang, Nenling, Zhou, Xiaojun, Huang, Riming, Huang, Huijuan, Xu, Zhifang, Li, Xu-e, Qiu, Samuel X.

“…A new prenylated isoflavonoid, flemiphilippinin G (1), and a new flavonol glycoside, flemiphilippininside (2), along with eleven known isoflavonoids were…”
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New Isoprenylated Flavanone from Cajanus cajan by Zhang, Nenling, Huang, Riming, Zhu, Yuehui, Fu, Manqin, Cai, Jiazhong, Yang, Jianxiang, Xu, Zhifang, Hu, Yingjie, Qiu, Samuel X

“…A new isoprenylated flavanone, naringenin-3′-isoprenyl-7-methyl ether, was isolated from the chloroform extract of the leaves of Cajanus cajan. Its structure…”
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Chemical Composition and Cytotoxic Activities of Petroleum Ether Fruit Extract of Fruits of Brucea javanica (Simarubaceae) by Su, Zhiwei, Huang, Huijuan, Li, Jinlian, Zhu, Yuehui, Huang, Riming, Qiu, Samuel X

“…Purpose: To investigate the chemical composition and antitumor activity of the petroleum ether extract of the dried ripe fruits of Brucea javanica . Methods:…”
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Flavokawain B, the hepatotoxic constituent from kava root, induces GSH-sensitive oxidative stress through modulation of IKK/NF-κB and MAPK signaling pathways by Zhou, Ping, Gross, Shimon, Liu, Ji-Hua, Yu, Bo-Yang, Feng, Ling-Ling, Nolta, Jan, Sharma, Vijay, Piwnica-Worms, David, Qiu, Samuel X

“…Kava (Piper methysticum Foster, Piperaceae) organic solvent-extract has been used to treat mild to moderate anxiety, insomnia, and muscle fatigue in Western…”
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