Sesquiterpenes from the east African sandalwood Osyris tenuifolia.


:The essential oil of the east African sandalwood Osyris tenuifolia was investigated by chromatographic and spectroscopic methods. Beside several already known sesquiterpenes four new compounds could be isolated by preparative gas chromatography and their structures investigated by mass spectroscopy and NMR techniques. Two of the new compounds--tenuifolene (17) and ar-tenuifolene (15)--show a new sesquiterpene backbone. 2,(7Z,10Z)-Bisabolatrien-13-ol (23) and the cyclic ether lanceoloxide (21) belong to the bisabolanes.






Kreipl AT,König WA




Has Abstract


2004-07-01 00:00:00














  • Flavonol glycosides from Calotropis gigantea.

    abstract::Besides isolation and characterization of isorhamnetin-3-O-rutinoside, isorhamnetin-3-O-glucopyranoside and taraxasteryl acetate, a new flavonol trisaccharide was isolated from the aerial parts of Calotropis gigantea, and its structure was established as isorhamnetin-3-O-[2-O-beta-D-galactopyranosyl-6-O-alpha-L-rhamno...


    pub_type: 杂志文章


    authors: Sen S,Sahu NP,Mahato SB

    更新日期:1992-08-01 00:00:00

  • Antibacterial chromene and chromane stilbenoids from Hymenocardia acida.

    abstract::Six chromene stilbenoids and one chromane stilbenoid were isolated from the African tree Hymenocardia acida. Several were moderately active against methicillin-resistant Staphylococcus aureus clinical isolate MRSA-108, including hymenocardichromanic acid, which was active at 8 μg/ml. None had IC50 values <20 μM in ant...


    pub_type: 杂志文章


    authors: Starks CM,Williams RB,Norman VL,Rice SM,O'Neil-Johnson M,Lawrence JA,Eldridge GR

    更新日期:2014-02-01 00:00:00

  • A "flavone-polysaccharide" redefined as a mixture of 6-methoxyluteolin penta- and hexa-O-glycosides.

    abstract::The incomplete structure proposed in 1972 for a unique "flavone-polysaccharide" compound, MF-1, from the liverwort Monoclea forsteri, has been re-examined. Rather than the proposed 8-methoxyluteolin structure with polysaccharides attached to the 7- and 4'-hydroxyls, MF-1 has been shown to be primarily a mixture of pen...


    pub_type: 杂志文章


    authors: Markham KR

    更新日期:2003-07-01 00:00:00

  • Oleanane-type triterpene saponins with collagen synthesis-promoting activity from the flowers of Bellis perennis.

    abstract::The methanol extract from Bellis perennis (Asteraceae) flowers was found to promote collagen synthesis in normal human dermal fibroblasts (NHDFs). Seven oleanane-type triterpene saponins, perennisosides XIII-XIX, and two known saponins, bellissaponins BS5 and BS9, were isolated from the methanol extract. The structure...


    pub_type: 杂志文章


    authors: Morikawa T,Ninomiya K,Takamori Y,Nishida E,Yasue M,Hayakawa T,Muraoka O,Li X,Nakamura S,Yoshikawa M,Matsuda H

    更新日期:2015-08-01 00:00:00

  • 21beta-Hydroxy-oleanane-type triterpenes from Hippocratea excelsa.

    abstract::Stem bark of Hippocratea excelsa afforded six pentacyclic triterpenes, five oleanane and one ursane types. They were identified as 11beta,21beta-dihydroxy-olean-12-ene-3-one (2), 3alpha,11alpha,21beta-trihydroxy-olean-12-ene (3), 3alpha,21beta-dihydroxy-11alpha-methoxy-olean-12-ene (4), 3alpha,21beta-dihydroxy-olean-9...


    pub_type: 杂志文章


    authors: Cáceres-Castillo D,Mena-Rejón GJ,Cedillo-Rivera R,Quijano L

    更新日期:2008-02-01 00:00:00

  • Flavonoid gene expression and UV photoprotection in transgenic and mutant Petunia leaves.

    abstract::The effects of UVB radiation on plant growth rate, gene expression and flavonoid content in wild-type, and in transgenic and mutant F3'H deficient Petunia lines have been studied for the first time. In wild-type Petunia, UVB induced an increase in total levels of flavonols and this was due to an up-regulation of sever...


    pub_type: 杂志文章


    authors: Ryan KG,Swinny EE,Markham KR,Winefield C

    更新日期:2002-01-01 00:00:00

  • Enzymatic preparation of 20(S, R)-protopanaxadiol by transformation of 20(S, R)-Rg3 from black ginseng.

    abstract::20(S)-protopanaxadiol (PPD(S)) and 20(R)-protopanaxadiol (PPD(R)), the main metabolites of ginsenosides Rg3(S) and Rg3(R) in black ginseng, are potential candidates for anti-cancer therapy due to their pharmacological activities such as anti-tumor properties. In the present study, we report the preparation of PPD(S, R...


    pub_type: 杂志文章


    authors: Liu L,Zhu XM,Wang QJ,Zhang DL,Fang ZM,Wang CY,Wang Z,Sun BS,Wu H,Sung CK

    更新日期:2010-09-01 00:00:00

  • Antioxidant flavonoids from leaves of Polygonum hydropiper L.

    abstract::Ten flavonoid compounds were isolated from the dried leaves of Polygonum hydropiper L. (Laksa leaves), and identified as 3-O-alpha-L-rhamnopyranosyloxy-3',4',5,7-tetrahydroxyflavone; 3-O-beta-D-glucopyranosyloxy-4',5,7-trihydroxyflavone; 6-hydroxyapigenin; 6"-O-(3,4,5-trihydroxybenzoyl) 3-O-beta-D-glucopyranosyloxy-3'...


    pub_type: 杂志文章


    authors: Peng ZF,Strack D,Baumert A,Subramaniam R,Goh NK,Chia TF,Tan SN,Chia LS

    更新日期:2003-01-01 00:00:00

  • Taxol content in the bark of Himalayan Yew in relation to tree age and sex.

    abstract::Taxol content in the bark of Taxus baccata trees growing in a homogenous (uniform) environment at Jageshwar, District Almora in Central Himalaya has been quantified. The average taxol concentration in the bark of sampled trees was 0.0558+/-0.008% (of dry wt.) and was about 64% higher for male plants (averaged across t...


    pub_type: 杂志文章


    authors: Nadeem M,Rikhari HC,Kumar A,Palni LM,Nandi SK

    更新日期:2002-07-01 00:00:00

  • O-Galloyl-C-glycosylflavones from Pelargonium reniforme.

    abstract::The unique series of C-2''-acylated C-glycosylflavones is extended by the discovery of the C-8-glucosyl derivatives 2''-O-galloylvitexin and 2''-O-galloylorientin and their C-6 analogues 2''-O-galloylisovitexin and 2''-O-galloylisoorientin, representing the first described O-galloyl-C-glycosylflavones. They are accomp...


    pub_type: 杂志文章


    authors: Latté KP,Ferreira D,Venkatraman MS,Kolodziej H

    更新日期:2002-02-01 00:00:00

  • Dammarane-type triterpenoid saponins from Salvia russellii Benth.

    abstract::Three undescribed dammarane-type saponins, russelliinosides A-C, together with a common sterol (β-sitosterol), an abietane diterpenoid (18-hydroxyferruginol), two oleane triterpenoids (daturaolone and oleanolic acid), an ursane triterpenoid (ursolic acid) as well as three 5-hydroxyflavones (cirsimaritin, eupatorin, an...


    pub_type: 杂志文章


    authors: Hafez Ghoran S,Firuzi O,Asadollahi M,Stuppner H,Alilou M,Jassbi AR

    更新日期:2021-01-29 00:00:00

  • Steroidal saponins from the bulbs of Camassia cusickii.

    abstract::Six new steroidal saponins have been isolated from the fresh bulbs of Camassia cusickii. Their structures were determined by spectroscopic analysis and some chemical transformations to be (25R)-5 alpha-spirostan-3 beta,6 alpha-diol (chlorogenin) 6-O-beta-D-glucopyranoside, chlorogenin 6-O-beta-D-glucopyranosyl-(1----2...


    pub_type: 杂志文章


    authors: Mimaki Y,Sashida Y,Kawashima K

    更新日期:1991-01-01 00:00:00

  • Diarylheptanoids from Myrica arborea.

    abstract::Investigations of the stem and root bark of Myrica arborea (Myricaceae) have yielded two novel diarylheptanoids, myricarborin and 11-O-beta-D-xylopyranosylmyricanol along with the known myricanol and 5-O-beta-D-glucopyranosylmyricanol. The structures of the novel compounds were determined by spectroscopic methods. ...


    pub_type: 杂志文章


    authors: Tene M,Wabo HK,Kamnaing P,Tsopmo A,Tane P,Ayafor JF,Sterner O

    更新日期:2000-08-01 00:00:00

  • Oxylipins in the spikemoss Selaginella martensii: Detection of divinyl ethers, 12-oxophytodienoic acid and related cyclopentenones.

    abstract::Green tissues of spikemoss Selaginella martensii Spring possessed the complex oxylipins patterns. Major oxylipins were the products of linoleic and α-linolenic acids metabolism via the sequential action of 13-lipoxygenase and divinyl ether synthase (DES) or allene oxide synthase (AOS). AOS products were represented by...


    pub_type: 杂志文章


    authors: Ogorodnikova AV,Mukhitova FK,Grechkin AN

    更新日期:2015-10-01 00:00:00

  • The biosynthesis of monolignols: a "metabolic grid", or independent pathways to guaiacyl and syringyl units?

    abstract::Lignin is a complex polymer formed by the oxidative polymerization of hydroxycinnamyl alcohol derivatives termed monolignols. The major monolignols in dicotyledonous angiosperm lignin are monomethylated guaiacyl (G) units derived from coniferyl alcohol, and dimethylated syringyl (S) units derived from sinapyl alcohol....


    pub_type: 杂志文章,评审


    authors: Dixon RA,Chen F,Guo D,Parvathi K

    更新日期:2001-08-01 00:00:00

  • Minor cytotoxic and antibacterial compounds from the rhizomes of Amomum aculeatum.

    abstract::A new cytotoxic 1,7-dioxa-dispiro[]pentadeca-9,12-dien-11-one derivative, aculeatin D, and a new alkenone, 5-hydroxy-hexacos-1-en-3-one, have been isolated as minor compounds from the rhizomes of Amomum aculeatum. Their structures have been determined mainly by NMR spectroscopy and mass spectrometry. Aculeatin ...


    pub_type: 杂志文章


    authors: Heilmann J,Brun R,Mayr S,Rali T,Sticher O

    更新日期:2001-08-01 00:00:00

  • Cytochrome P450 enzymes: A driving force of plant diterpene diversity.

    abstract::In plant terpene biosynthesis, oxidation of the hydrocarbon backbone produced by terpene synthases is typically carried out by cytochrome P450 oxygenases (CYPs). The modifications introduced by CYPs include hydroxylations, sequential oxidations at one position and ring rearrangements and closures. These reactions sign...


    pub_type: 杂志文章,评审


    authors: Bathe U,Tissier A

    更新日期:2019-05-01 00:00:00

  • WITHDRAWN: Phytochemical Society of North America.

    abstract::This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at ...


    pub_type: 杂志文章


    authors: McIntosh C

    更新日期:2012-03-16 00:00:00

  • Nonenolides and cytochalasins with phytotoxic activity against Cirsium arvense and Sonchus arvensis: a structure-activity relationships study.

    abstract::A structure-activity relationships study was conducted assaying 15 natural analogues and derivatives belonging to two groups of organic compounds, nonenolides and cytochalasins, for their toxicity against the composite perennial weeds Cirsium arvense and Sonchus arvensis occurring through the temperate region of world...


    pub_type: 杂志文章


    authors: Berestetskiy A,Dmitriev A,Mitina G,Lisker I,Andolfi A,Evidente A

    更新日期:2008-02-01 00:00:00

  • Characterisation of triterpenes and new phenolic lipids in Cameroonian propolis.

    abstract::Chemical investigation of a sample of propolis originating from North-Western Cameroon led to the isolation of thirteen alk(en)ylphenols (1-13) (inseparable mixture) along with α-amyrin (14), β-amyrin (15), lupeol (16), cycloartenol (17), mangiferonic acid (18), ambonic acid (19), mangiferolic acid (20), ambolic acid ...


    pub_type: 杂志文章


    authors: Kardar MN,Zhang T,Coxon GD,Watson DG,Fearnley J,Seidel V

    更新日期:2014-10-01 00:00:00

  • The effect of growth temperature on the long-chain alkenes composition in the marine coccolithophorid Emiliania huxleyi.

    abstract::The hydrocarbon fraction of a pure culture of Emiliania huxleyi, composed of a mixture of C31, C33, C37 and C38 polyunsaturated n-alkenes, appeared strongly dependent on the growth temperature of the alga between 8 degrees C and 25 degrees C. The total hydrocarbon content increased linearly with decreasing temperature...


    pub_type: 杂志文章


    authors: Grossi V,Raphel D,Aubert C,Rontani JF

    更新日期:2000-06-01 00:00:00

  • A flavone and an unusual 23-carbon terpenoid from Andrographis paniculata.

    abstract::Phytochemical investigation of the roots and aerial parts of Andrographis paniculata Nees yielded a new flavone, 5-hydroxy-7,2',6'-trimethoxyflavone and an unusual 23-carbon terpenoid, 14-deoxy-15-isopropylidene-11,12-didehydroandrographolide together with five known flavonoids and four known diterpenoids. The structu...


    pub_type: 杂志文章


    authors: Reddy MK,Reddy MV,Gunasekar D,Murthy MM,Caux C,Bodo B

    更新日期:2003-04-01 00:00:00

  • Oleanane triterpenes with protein tyrosine phosphatase 1B inhibitory activity from aerial parts of Lantana camara collected in Indonesia and Japan.

    abstract::During the search for new protein tyrosine phosphatase (PTP) 1B inhibitors, EtOH extracts from the aerial parts of Lantana camara L. (lantana) collected at Manado (Indonesia) and two subtropical islands in Japan (Ishigaki and Iriomote Islands, Okinawa) exhibited potent inhibitory activities against PTP1B in an enzyme ...


    pub_type: 杂志文章


    authors: Abdjul DB,Yamazaki H,Maarisit W,Rotinsulu H,Wewengkang DS,Sumilat DA,Kapojos MM,Losung F,Ukai K,Namikoshi M

    更新日期:2017-12-01 00:00:00

  • Phenylpropanoid glucosides from Chrozophora obliqua.

    abstract::From the aerial parts of Chrozophora obliqua, two phenylpropanoid glucosides: 4-O-methyl guaiacylglycerol 9-O-beta-glucopyranoside (1) and 4-O-methyl guaiacylglycerol 8-O-beta-glucopyranoside (2) together with syringin, benzyl alcohol glucoside, isorhamnetin-3-O-beta-glucopyranoside-7-O-alpha-rhamnopyranoside and quer...


    pub_type: 杂志文章


    authors: Mohamed KM

    更新日期:2001-10-01 00:00:00

  • Metabolic differentiations and classification of Verbascum species by NMR-based metabolomics.

    abstract::The genus Verbascum L. (mulleins) comprises of about 360 species of flowering plants in the Scrophulariaceae family. Mulleins have been used in the traditional folk medicine for centuries, for treatment of a wide range of human ailments, inter alia bronchitis, tuberculosis, asthma, and different inflammations. Despite...


    pub_type: 杂志文章


    authors: Georgiev MI,Ali K,Alipieva K,Verpoorte R,Choi YH

    更新日期:2011-11-01 00:00:00

  • Vacuolar uptake of the phytoalexin medicarpin by the glutathione conjugate pump.

    abstract::We have studied the uptake of [3H]-medicarpin and its glutathione conjugate(s) into vacuolar membrane vesicles from etiolated hypocotyls of mung bean (Vigna radiata). Unconjugated medicarpin is taken up at a low rate in the presence or absence of MgATP. However, [3H]-medicarpin-glutathione conjugate(s), prepared by in...


    pub_type: 杂志文章


    authors: Li ZS,Alfenito M,Rea PA,Walbot V,Dixon RA

    更新日期:1997-06-01 00:00:00

  • Procyanidin xylosides from the bark of Betula pendula.

    abstract::A procyanidin dimer xyloside, catechin-(4α→8)-7-O-β-xylopyranosyl-catechin, was isolated from the inner bark of Betula pendula and its structure was determined using 1D and 2D NMR, CD and high-resolution ESIMS. Interestingly, the 7-O-β-xylopyranose unit was found to be present in the lower terminal unit of the dimer. ...


    pub_type: 杂志文章


    authors: Liimatainen J,Karonen M,Sinkkonen J

    更新日期:2012-04-01 00:00:00

  • 3 alpha-hydroxy-oleanane-type triterpene glycosyl esters from leaves of Acanthopanax spinosus.

    abstract::Three novel 3 alpha-hydroxy-oleanane-type triterpene oligoglycosyl esters, spinoside C1, C4 and C5, were isolated from the leaves of Acanthopanax spinosus. The structures were established to be 28-O-alpha-L-rhamnopyranosyl(1-->4)-beta-D-glucopyranosyl (1-->6)-beta-D-glucopyranosyl esters of 3 alpha, 29-dihydroxy-olean...


    pub_type: 杂志文章


    authors: Miyakoshi M,Ida Y,Isoda S,Shoji J

    更新日期:1993-12-01 00:00:00

  • Uniconazole, a cytochrome P450 inhibitor, inhibits trans-zeatin biosynthesis in Arabidopsis.

    abstract::Cytokinin (CK) is a plant hormone that plays important regulatory roles in many aspects of plant growth and development. Although functions of CK and its biosynthesis pathway have been studied extensively, there is still no efficient biosynthesis inhibitor, which would be useful for studying CK from a chemical genetic...


    pub_type: 杂志文章


    authors: Sasaki E,Ogura T,Takei K,Kojima M,Kitahata N,Sakakibara H,Asami T,Shimada Y

    更新日期:2013-03-01 00:00:00

  • Cell-wall proteins from Sitka spruce xylem are selectively insolubilised during formation of dehydrogenation polymers of coniferyl alcohol.

    abstract::Extracts from the lignifying xylem of Sitka spruce that were enriched in cell-wall-associated glycoproteins contained peroxidase and oxidase activity and readily formed lignin-like water-insoluble dehydrogenation polymers (DHPs) from coniferyl alcohol (CA) when supplied with H2O2. During the formation of DHPs, the abu...


    pub_type: 杂志文章


    authors: McDougall GJ

    更新日期:2001-05-01 00:00:00