1731-94-8Relevant articles and documents
New lipoxygenase inhibitory sphingolipids from Chrozophora plicata
Riaz, Naheed,Tabussum, Asia,Saleem, Muhammad,Ashraf, Muhammad,Nasar, Romana,Jabeen, Bushra,Malik, Abdul,Jabbar, Abdul
, p. 1080 - 1087 (2013)
Two new sphingolipids plicatin A [(2S,3S,4R)-2-{[(2R)-2-hydroxyoctdecanoyl] amino}hexaeicosane-1,3,4-triol (1)] and plicatin B [(2S,3S,4R,10E)-2-{[(2R)-2- hydroxyoctdecanoyl]amino}tricont-10-ene-1,3,4-triol (2)], together with 4-hydroxybenzaldehyde, scopoletin, uracil, and dl-threonolactone were isolated from the methanolic extract of the whole plant of Chrozophora plicata. The structures of these compounds were established using 1D (1H, 13C) and 2D NMR (HMQC, HMBC, and COSY) spectroscopy and mass spectrometry (EI-MS and HR-EI-MS) and in comparison with the reported data in the literature. Compounds 1 and 2 showed inhibitory potential against enzyme lipoxygenase with IC50 values 195.1 and 102.3 μM, respectively.
Cytotoxic ceramides and glycerides from the roots of Livistona chinensis
Zeng, Xiaobin,Xiang, Limin,Li, Chen-Yang,Wang, Yihai,Qiu, Guofu,Zhang, Zhen-Xue,He, Xiangjiu
experimental part, p. 609 - 616 (2012/06/04)
A 70% ethanol extract of the roots of Livistona chinensis has been investigated, led to the isolation of 13 compounds, including a new ceramide, (2S,3S,4R,9Z)-2-[(2R)-2-hydroxytricosanoylamino]-9-octadecene-1,3,4-triol (2), a new glycosyl ceramide, 1-O-β-d-glucopyranosyl-(2S,3S,4R,9Z)-2-[(2R)-2- hydroxydocosanoylamino]-9-octadecene-1,3,4-triol (3), three new monoacylglycerols, 1-(34-hydroxytetratriacontanoyl)-sn-glycerol (9), 1-[nonadeca-(9Z,12Z)-dienoyl]-sn-glycerol (10), and 1-[12-hydroxypentatriaconta- (13E,15Z)-dienoyl]-sn-glycerol (11), a new diacylglycerol, 1-(heptadeca-6Z,9Z- dienoyl)-3-(octadeca-6Z,9Z,12Z-trienoyl)-sn-glycerol (12), as well as a new diacylglycerol aminoglycoside, 1-octadecanoyl-2-nonadecanoyl-3-O-(6-amino-6- deoxy)-β-d-glucopyranosyl-sn-glycerol (13). The structures of new compounds were elucidated, based on spectroscopic, zymologic and chemical methods. Among the compounds tested, compounds 3, 4 and 13 showed significantly antiproliferative effects against the human tumor cell lines (K562, HL-60, HepG2, and CNE-1) with the IC50 of 10-65 μM. To our knowledge, this is first report of the occurrence of ceramides and acylglycerols in the genus Livistona.
Selective Mono- and Bis(alkoxycarbonylation)s of Olefins Catalyzed by Palladium in the Presence of Cu(I) or Cu(II) Chloride under Remarkably Mild Conditions. Application to the Synthesis of γ-Butyrolactone Derivatives
Toda, Shiho,Miyamoto, Masanori,Kinoshita, Hideki,Inomata, Katsuhiko
, p. 3600 - 3606 (2007/10/02)
Palladium-catalyzed mono- and bis(alkoxycarbonylation)s of the olefins were controlled by the use of copper(II) and copper(I) chloride, respectively, in alcohol under normal pressure of carbon monoxide and oxygen at room temperature without any other additives. 3-Buten-1-ols gave the corresponding γ-butyrolactones and 2-oxotetrahydrofuran-3-acetic acid esters, respectively, in high yields.