- Chemical constituents from root barks of erythrina mildbraedii and stem barks of erythrina addisoniae
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The β-D-galactopyranoside of the tetracosanoic acid (1) was isolated from the stem barks of Erythrina addisoniae along with known tetracosanoic acid (2), α-sophoradiol (3), stigmasterol (4), warangalone (5), 3-Oβ-D-glucopyranoside of β-sitosterol (6) and
- Talla, Emmanuel,Yankep, Emmanuel,Mbafor, Joseph Tanyi
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- Secondary metabolites from Garcinia daedalanthera Pierre leaves (Clusiaceae)
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Two new glycerol esters, (S)-2-hydroxy-3-(octanoyloxy)propyl tetracosanoate (1) and (S)-3-(((S)-11-acetoxy octadecanoyl)oxy)propane-1,2-diyl diacetate (2), and eight known compounds, docosanedioic acid (3), 2,5-dimethylnonadecane (4), lupeol (5), stigmast
- Forestrania, Roshamur Cahyan,Anaya-Eugenio, Gerardo D.,Acu?a, Ulyana Mu?oz,Ren, Yulin,Elya, Berna,de Blanco, Esperanza Carcache
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supporting information
p. 207 - 213
(2020/07/04)
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- METHOD FOR THE PRODUCTION OF LIGNOCERIC ACID
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The invention is related to a process for production of lignoceric acid from mixtures of long-chain aliphatic alcohols that contain lignoceric alcohol, wherein the process consists in oxidizing the mixture in a biphasic catalytic system using quaternary ammonium peroxotungstophosphate as a catalyst and hydrogen peroxide as an oxidant, followed by several physical or chemical unitary steps to separate and purify the lignoceric acid.
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Page/Page column 3-4
(2012/06/01)
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- Gracilarioside and gracilamides from the Red alga Gracilaria asiatica
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One gracilarioside and two gracilamides with unusual cyclopropane- containing alkyl chains were isolated from the red alga Gracilaria asiatica. Their structures were determined by spectroscopic methods and microscale chemical degradation. To our knowledge, no ceramides with a cyclopropane ring have been reported from marine organisms. These three compounds were mildly cytotoxic to the human A375-S2 melanoma cell line.
- Sun, Yi,Xu, Youjun,Liu, Kai,Hua, Huiming,Zhu, He,Pei, Yuehu
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p. 1488 - 1491
(2008/12/22)
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- Structure of a novel diterpenoid ester, fritillahupehin from bulbs of Fritillaria hupehensis Hsiao and K.C. Hsia
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A new diterpenoid ester, fritillahupehin (1) together with three known fatty acids: palmitic acid (2), lignoceric acid (3) and azelaic acid (4) were isolated from the bulbs of Fritillaria hupehensis Hsiao and K.C. Hsia. The structure of fritillahupehin has been established to be ent-kauran-16β-yl lignocerate by means of spectroscopic and chemical evidence. Compounds 2-4 were isolated from Fritillaria sp. for the first time.
- Ruan, Hanli,Zhang, Yonghui,Wu, Jizhou,Deng, Shukai,Sun, Handong,Fujita, Tetsuro
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p. 288 - 291
(2007/10/03)
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- Intermediate compounds for the synthesis of glycolipids
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The invention provides important intermediate compounds for the synthesis of acidic glycolipids which are identical with the glycolipid antigens isolated from the acidic glycolipid fractions of peripheral nerve and embryonic central nervous system and preparation methods thereof. By the adoption of the present intermediate compounds, sulfation of 3-hydroxyl group of end glucuronic acid portion of the acidic glycolipid can be quite easily carried out and total synthetic yield be greatly improved.
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- STEROID GLYCOSIDES FROM ASPARAGUS ADSCENDENS
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The structures of two new glycosides isolated from the roots of Asparagus adscendens have been elucidated as 3-β-O--stigmasterol and 3-β-O-2)-α-L-arabinopyranosyl>-stigmasterol by physicochemical data.
- Tandon, Mamta,Shukla, Yogendra N.,Thakur, Raghunath S.
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p. 2957 - 2959
(2007/10/02)
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- Chemical Studies on the Constituents of Hyphear Tanakae HOSOKAWA from Different Host Trees
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The chemical constituents of Hyphear Tanakae HOSOKAWA epiphyting to four different host trees were examined.A new triterpene fatty acid ester (III) and four known flavonoid glycosides, rhamnocitrin-3-O-rhamnoside (V), kaempferol-3-O-rhamnoside (VI), rhamnetin-3-O-rhamnoside (VII), and quercetin-3-O-rhamnoside (VIII) have been isolated from the leaves and twigs of this plant epiphyting to Castanea crenata SIEB., together with fatty acids (I), phytosterol (II), and phytosterol-glucoside (IV).The present investigation has revealed that compounds II-V, VII, and VIII are contained in this plant irrespective of the host, among the four host trees, examined.Keywords - Hyphear Tanakae; misletoe; Loranthaceae; triterpene; lup-20(29)-ene-3β,7β,15α-triol; flavonoid; rhamnocitrin-3-O-rhamnoside; kaempferol-3-O-rhamnoside; rhamnetin-3-O-rhamnoside; quercetin-3-O-rhamnoside
- Fukunaga, Takehiko,Nishiya, Koichi,Kajikawa, Ikuko,Watanabe, Yoshikuni,Suzuki, Nobuo,et al.
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p. 1180 - 1184
(2007/10/02)
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- A CONVENIENT SYNTHESIS OF 1-TRIACONTANOL
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1-Triacontanol, a new plant growth regulator, has been synthesised starting from stearic acid, and by two successive additions of six carbon units through enamine intermediates.
- Rama Rao, A. V.,Deshmukh, M. N.,Kamalam, M.
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p. 227 - 230
(2007/10/02)
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- NEW HYDROXY FATTY ACID FROM SEED OIL OF BALIOSPERMUM AXILLARE
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A fatty acid, found as a minor component in the seed oil of Baliospermum axillare, is shown to be the hitherto unknown 11,13-dihydroxytetracos-trans-9-enoic acid (axillarenic acid).Key Word Index - Baliospermum axillare; Euphorbiaceae; seed oil; 11,13-dihydroxytetracos-trans-9-enoic acid.
- Husain, Shahid,Ahmad, Moghis U.,Osman, S. M.
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