20121-96-4Relevant academic research and scientific papers
Mirabolides A and B; new cytotoxic glycerides from the Red Sea sponge Theonella mirabilis
Abou-Hussein, Dina R.,Youssef, Diaa T. A.
, (2016/09/09)
As a part of our continuing work to find out bioactive lead molecules from marine invertebrates, the CHCl3 fraction of the organic extract of the Red Sea sponge Theonella mirabilis showed cytotoxic activity in our primary screen. Bioassay-guided purification of the active fractions of the sponge's extract resulted in the isolation of two new glycerides, mirabolides A and B (1 and 2), together with the reported 4-methylene sterols, conicasterol (3) and swinhosterol B (4). The structures of the compounds were assigned by interpretation of their 1D (1H, 13C), 2D (COSY, HSQC, HMBC, ROESY) NMR spectral data and high-resolution mass determinations. Compounds 1-4 displayed marked cytotoxic activity against human breast adenocarcinoma cell line (MCF-7) with IC50 values of 16.4, 5.18, 6.23 and 3.0 μg/mL, respectively, compared to 5.4 μg/mL observed by doxorubicin as reference drug.
METHOD FOR PRODUCING CROSS-COUPLING COMPOUND
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Page/Page column 13-14, (2010/01/29)
To provide a method for performing a cross-coupling reaction of a Grignard compound with an alkyl halide simply, efficiently and in high yield, a method for obtaining a ω-bromo long chain carboxylic acid simply and efficiently using an easily obtainable raw material and a method for producing a useful branched fatty acid simply and efficiently. [R1: an alkyl group having 1 to 15 carbon atoms, R2: an alkyl group having 1 to 30 carbon atoms with a carboxyl group and X and X': a halogen atom] [n : an integer of 9 to 17] [n : an integer of 9 to 17, R1a : a branched alkyl group having 3 to 8 carbon atoms and X: a halogen atom]
Synthesis of (S)-(+)-enantiomers of food-relevant (n-5)-monoenoic and saturated anteiso-fatty acids by a Wittig reaction
Thurnhofer, Saskia,Vetter, Walter
, p. 1140 - 1145 (2007/10/03)
We developed an enantioselective synthesis for the food-relevant anteiso-fatty acids a15:0, a16:0, and a17:0. Different (carboxyalkyl)triphenylphosphonium bromide salts were coupled with (S)-3-methylpentanal in a Wittig reaction. Mixtures of the obtained cis-/trans-isomers were separated by Ag+-HPLC to give the novel cis-isomers of (S)-(+)-a15:1n-5, (S)-(+)-a16:1n-5, and (S)-(+)-a17:1n-5. Hydrogenation of the monoenoic products led to (S)-(+)-a15:0, (S)-(+)-a16:0, and (S)-(+)-a17:0, which are essential for the assessment of the bioactivity of tests with standards of anteiso-fatty acids.
Anticancer effects of specific branched-chain fatty acids and related production process
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, (2008/06/13)
A group of specific branched-chain fatty acids, with significant anticancer effects on human and animals; methods of making using either chemical synthesis or biosynthesis methods; and methods of treating cancer.
OXO ACIDS AND BRANCHED FATTY ACID ESTERS FROM RHIZOMES OF COSTUS SPECIOSUS
Gupta, Madan M.,Verma, Ram K.,Akhila, Anand
, p. 1899 - 1902 (2007/10/02)
Key Word Index - Costus speciosus; Costaceae; rhizomes; tetradecyl 13-methylpentadecanoate; tetradecyl 11-methyltridecanoate; 14-oxotricosanoic acid; 14-oxoheptacosanoic acid; 15-oxooctacosanoic acid; 5α-stigmast-9(11)-en-3β-ol; diosgenin; sitosterol; triacontanol; triacontanoic acid. Five new compounds, isolated from the rhizomes of Costus speciosus have been characterized as tetradecyl 13-methylpentadecanoate, tetradecyl 11-methyltridecanoate, 14-oxotricosanoic acid, 14-oxoheptacosanoic acid and 15-oxo-octacosanoic acid by spectral and chemical studies.Triacontanol, 5α-stigmast-9(11)-en-3β-ol, triacontanoic acid, sitosterol and diosgenin have also been isolated and identified.
