Results 81 to 90 of about 47,838 (205)
Production d'arômes de type lactone par des levures [PDF]
Biotechnologie, Agronomie, Société et Environnement, 2010 Production of aroma lactones by yeasts. Lactones are widely distributed in foods and beverages as aroma compounds. Their extraction from natural products is very expensive.
Alchihab, M. +3 more
doaj
Two new eremophilane sesquiterpene lactones from Ligularia myriocephala Ling [PDF]
, 2005 Two new eremophilane sesquiterpene lactones, 1 beta-angeloyloxy-6 beta, 10 beta-dihydroxy-8 beta-methoxyeremophila-7(11)en-8 alpha,12-olide and 1 beta-angeloyloxy-6 beta,10 alpha-dihydroxy-8 alpha-methoxyeremophila-7(11)en-8 beta,12-olide were isolated ...
Liu, JX +4 more
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Structure of Mokko Lactone and Dehydrocostus Lactone
Chemical and Pharmaceutical Bulletin, 1964 Hikino, Hiroshi +3 more
openaire +3 more sources
Organic Dye Photocatalyzed Synthesis of Functionalized Lactones and Lactams via a Cyclization-Alkynylation Cascade [PDF]
An organic dye photocatalyzed lactonization-alkynylation of easily accessible homoallylic cesium oxalates using ethynylbenziodoxolones (EBXs) reagents has been developed.
Diana, Cavalli, Jerome, Waser
core +2 more sources
Sesquiterpene lactones from notoseris porphyrolepis
, 2000 Two new sesquiterpene lactones. notoserolides A and B. along with 12 known compounds were isolated from the aerial parts of Notoseris porphyrolepis. By means of spectral methods including MS. NMR (H-1 NMR. C-13 NMRI DEFT, HMQC. HMBC) and X-ra diffraction,
Tian, J +4 more
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Anais da Academia Brasileira de CiênciasA new lactone, 7-epi-griffonilide (1), and six known compounds, 2, 3a - 3c, 4a and 4b, were isolated from the leaves of Bauhinia pentandra (Fabaceae). The structures elucidation of 1 and 2 were based on detailed 2D NMR techniques and spectral comparison ...
MACIA C.S. DE ALMEIDA +8 more
doaj +1 more source
Conformationally controlled reactions of unsaturated macrocyclic lactones and keto lactones
, 2000 As part of a study of the chemistry of macrocyclic compounds in our laboratory, the 14-membered unsaturated lactones 29 and 30 were synthesized with high stereoselectivity (>16:1 EIZ) via the ring closing olefin metathesis (RCM) reaction of the open ...
Fenster, Erik
core +1 more source
Química Nova, 2013 The chemical investigation of hexane and ethanol extracts from the aerial parts of Vernonia scorpioides resulted in the isolation and characterization of a new polyacetylene lactone, rel-4-dihydro-4β-hydroxy-5a-octa-2,4,6-triynyl-furan-2-(5H)-one ...
Adalva Lopes Machado +8 more
doaj
, 2018 Franck Gallardo,1 Bernard Mariamé,2 Remi Gence,3 Anne-Francoise Tilkin-Mariamé4 1NeoVirTech, SAS, Institut for Advanced Technology in Life Science (ITAV), Toulouse, France; 2ITAV USR3505 CNRS/LBME, UMR 5099 CNRS, Toulouse, France; 3INSERM ...
Mariamé B +3 more
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Abietane lactones and iridoids from Goldfussia yunnanensis
, 2007 Two new abietane diterpene lactones (1-2), three new abietane diterpene lactone glycosides (3-5) and a new iridoid glycoside (6), together with five known compounds, were isolated from the aerial parts of Goldfussia yunnanensis.
Fang, DM +6 more
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