Results 231 to 240 of about 61,654 (265)
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Angewandte Chemie, 1973
AbstractUnter den etwa 4000 der heute bekannten terpenoiden Naturstoffe, deren Kohlenstoff‐Grundgerüst nach der „Isopren‐Regel”︁ in Isopentan‐Einheiten unterteilt werden kann (C10: Monoterpene; C15: Sesquiterpene; C20; Diterpene; C25; Sesterterpene; C30; Triterpene; Steroide; Carotinoide; Polyprene), bilden die Sesquiterpene mit etwa 1000 Verbindungen ...
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AbstractUnter den etwa 4000 der heute bekannten terpenoiden Naturstoffe, deren Kohlenstoff‐Grundgerüst nach der „Isopren‐Regel”︁ in Isopentan‐Einheiten unterteilt werden kann (C10: Monoterpene; C15: Sesquiterpene; C20; Diterpene; C25; Sesterterpene; C30; Triterpene; Steroide; Carotinoide; Polyprene), bilden die Sesquiterpene mit etwa 1000 Verbindungen ...
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Sesquiterpene coumarins and sesquiterpenes from Ferula sinaica
Phytochemistry, 1999Further study on the methylene chloride extract of roots of Ferula sinaica has resulted in the isolation of six sesquiterpene coumarins, of which two were new, six sesquiterpenes, including a new one, and a known monoterpene. The structure of the new compounds was established by high-field NMR analysis.
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Sesquiterpene Lactones as Allelochemicals
Journal of Natural Products, 2006Six new sesquiterpene lactones, annuolide H (3), helivypolides F, H-J (4, 11-13), and helieudesmanolide A (6), together with known compounds, were isolated from polar bioactive fractions of Helianthus annuus cv. SH-222 and Stella fresh leaf water extracts.
Macias, Francisco A. +5 more
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Eremophilane Sesquiterpenes from Capsidiol
The Journal of Organic Chemistry, 2004A series of eremophilane sesquiterpene alcohols and hydrocarbons was prepared from the phytoalexin capsidiol (1) for mechanistic studies with epiaristolochene synthase and epiaristolochene dihydroxylase. Among them, 3-deoxycapsidiol (10) was obtained through selective derivatization and reductive cleavage of the equatorial 3 alpha hydroxyl group.
Yuxin, Zhao +4 more
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Anti-inflammatory sesquiterpenes and sesquiterpene dimers fromChloranthus fortunei
Journal of Asian Natural Products Research, 2012A novel lindenane sesquiterpene with an unprecedented 18-membered triester ring, named chlorafortulide (1), along with one known lindenane sesquiterpene (2) and nine known lindenane sesquiterpene dimers (3-11), was isolated from the whole plant of Chloranthus fortunei.
Mi, Zhang +7 more
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Sesquiterpenes from Curcuma comosa
Journal of Natural Medicines, 2008From the dried rhizomes of Curcuma comosa cultivating in Thailand, 26 known sesquiterpenes were isolated: zederone, zederone epoxide, furanodienone, isofuranodienone, 1(10)Z,4Z-furanodiene-6-one, glechomanolide, dehydrocurdione, neocurdione, curdione, 7 alpha-hydroxyneocurdione, 7 beta-hydroxycurdione, germacrone-1(10),4-diepoxide, germacrone, 13 ...
Yang, Qu +6 more
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Sesquiterpene esters sesquiterpene-coumarin ethers from Ferula jaeskeana
Phytochemistry, 1989Abstract Five new sesquiterpene esters, together with the known esters of jaeskeanadiol, were isolated and characterized from the roots of Ferula jaeskeana . Two sesquiterpene-coumarin ethers were isolated for the first time from this plant.
T.K. Razdan +4 more
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Sesquiterpenes from Centaurea aspera
Phytochemistry, 2005The aerial parts of two subspecies of Centaurea aspera L. (Asteraceae) yielded the germacranolides 1a-h, 2, 3, 4 and 5, the elemane derivatives 6d and 6f, the lignan matairesinol, the degraded terpene loliolide, and the onopordopicrin-valine dimeric adduct 7. From these, compounds 1e, 3 and 6d are natural products.
J Alberto, Marco +4 more
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