1120-28-1Relevant articles and documents
Acyl flavonoids, biflavones, and flavonoids from Cephalotaxus harringtonia var. nana
Komoto, Noriko,Nakane, Takahisa,Matsumoto, Sachiko,Hashimoto, Shusuke,Shirota, Osamu,Sekita, Setsuko,Kuroyanagi, Masanori
, p. 479 - 486 (2015)
A methanol extract of the leaves of Cephalotaxus harringtonia var. nana and its ethyl acetate (EtOAc)-soluble fraction demonstrated strong antitumor activity against A549 and HT-29 cell lines. The EtOAc-soluble fraction was purified by column chromatography and high-performance liquid chromatography (HPLC) using a reverse-phase column to yield three novel acyl flavonoids and a biflavonoid, along with 15 other known compounds that included flavonoids, biflavonoids, and other phenolics. The structures of the new compounds were elucidated using spectral data from HR-MS and NMR, including two-dimensional NMR studies, as (2R,3R)-3-O-eicosanoyltaxifolin (1), (2R,3R)-3-O-docosanoyltaxifolin (2), (2R,3R)-3-O-tetracosanoyltaxifolin (3), and 6-methyl-4′,7,7′-tri-O-methylamentoflavone (4). The isolated compounds, including the known compounds, were tested for possible antitumor activity; some of the biflavones were found to be active. The potent antitumor activity of the extract was attributed to Cephalotaxus alkaloids, such as homoharringtonine (20).
Dammarane triterpenoids from Carnauba, Copernicia prunifera (Miller) H. E. Moore (Arecaceae), wax
De Almeida, Buana C.,Araújo, Bruno Q.,Barros, Elcio D. S.,Freitas, Samya D. L.,Maciel, Dayany S. A.,Ferreira, Ari J. S.,Guadagnin, Rafael C.,Vieira, Gerardo M.,Lago, Jo?o H. G.,Chaves, Mariana H.
, p. 1371 - 1376 (2017)
Phytochemical investigation from carnauba (Copernicia prunifera) wax led to the identification of sixteen dammarane–type triterpenes, including thirteen new characterized as: (24R*)-methyldammara-20,25-dien-3α-ol and a mixture of alkyl (24R*)-methyldammar-25-en-20-ol-3β-carboxylates, together with three previously described triterpenes: carnaubadiol, (24R*)-methyldammara-20,25-dien-3β-ol and (24R*)-24-methyldammara-20,25-dien-3-one. Moreover, four fatty alcohols (eicosanol, docosanol, tetracosanol and hexacosanol) as well as four sterols (cholesterol, campesterol, stigmasterol, and sitosterol) were also obtained. These compounds were isolated using classical chromatographic methods and their structures were determined by spectroscopic and chemical methods.
GC - MS investigations. II. Lipid composition of Stevia rebaudiana
Korobko,Turko,Shokun,Chernyak,Pokrovskii,Smetankina,Kerimzhanova,Baltaev
, p. 359 - 360 (2008)
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New extracellular fatty acids in culture filtrates of Sporothrix flocculosa and S. rugulosa
Choudhury,Traquair,Jarvis
, p. 84 - 87 (1995)
Two new and rare unsaturated, extracellular fatty acids were identified in the culture filtrates of the biocontrol fungi, Sporothrix flocculosa and S. rugulosa. 16-Methyl-9E-nonadecenoic acid (1) and (Z,Z)-10,14-eicosadienoic acid (2) were characterized on the basis of infrared (1R) and nuclear magnetic resonance spectra (13C and 1N NMR), and gas chromatographic - mass spectrometric data (GC-MS). The structure of compounds 1 and 2 was confirmed by oxidative degradation to the known standards, dimethyl azelate, dimethyl succinate, dimethyl sebacate, and methyl caproate.
Three new fatty acid esters from the mushroom Boletus pseudocalopus
Kim, Ki Hyun,Choi, Sang Un,Lee, Kang Ro
, p. 593 - 599 (2012)
A bioassay-guided fractionation and chemical investigation of a MeOH extract of the Korean wild mushroom Boletus pseudocalopus resulted in the identification of three new fatty acid esters, named calopusins A-C (1-3), along with two known fatty acid methyl esters (4-5). These new compounds are structurally unique fatty acid esters with a 2,3-butanediol moiety. Their structures were elucidated through 1D- and 2D-NMR spectroscopic data and GC-MS analysis as well as a modified Mosher's method. The new compounds 1-3 showed significant inhibitory activity against the proliferation of the tested cancer cell lines with IC50 values in the range 2.77-12.51 μM. AOCS 2011.
PROCESS FOR PREPARATION OF ARACHIDIC ACID
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, (2021/10/15)
The present application relates to an improved process for preparation of arachidic acid.
