0000000000022282
AUTHOR
Juan F. Sanz
showing 26 related works from this author
New umbelliferone sesquiterpene ethers from roots ofLigularia persica
1991
An extract of roots of Ligularia persica yielded thirteen umbelliferone sesquiterpene ethers, among them the new ones ligupersin A (11) and ligupersin B (13).
Ein neues Butenolid ausConyza bonariensis
1991
A New Butenolide from Conyza bonariensis Extraction of aerial parts of Conyza bonariensis and chromatographic separation yielded the new butenolide 1, together with the acetylenic compounds trans-lachnophyllum lactone (2) and cis-lachnophyllum methyl ester (3), and the germacrane alcohol 4.
13C NMR spectra of eudesmane derivatives
1992
The 13C NMR spectral data of 18 eudesmane derivatives, mainly acids and esters of natural and synthetic origin, are reported, and the γ-effect of the epoxide ring in two diastereoisomeric epoxy esters is discussed.
New sesquiterpene lactones and acetylenes from chrysanthemum lavandulifolium
1990
Abstract The aerial parts of Chrysanthemum lavandulifolium Mak. (Asteraceae) yielded three new acetylenes of the spiroacetal type 1-3, as well as two new germacranolides 4-5 and several known lactones.
Sesquiterpene lactones from Artemisia hispanica
1989
Abstract Extraction of aerial parts of Artemisia hispanica and chromatographic separation yielded the eight known sesquiterpene lactones costunolide, artemorin, anhydroverlotorin, tamaulipin A, reynosin, santamarin, matricarin and deacetylmatricarin, the flavone cirsimaritin, zingerone, 1-hydroxy-α-bisabololoxide A acetate and the new germacranolide 2α-hydroxyartemorin.
Sesquiterpene lactones from Artemisia herba-alba
1990
Abstract The aerial parts of Artemisia herba-alba subsp. valentine yielded, in addition to known compounds, a new germacranolide, six new eudesmanolides and ilicic acid methyl ester.
Sesquiterpene lactones from Picris echioides
1992
Abstract The aerial parts of Picris echioides yielded the new germacranolide 3β-hydroxybalchanolide and the known guaianolides hieracin I, hieracin II, 8-deoxylactucin, jacquilenin and 11 -epijacquilenin.
A germacrane derivative from Pallenis spinosa
1991
Abstract Extraction of aerial parts of Pallenis spinosa and chromatographic separation have yielded a new germacrane derivative and the known sesquiterpenes shiromool and α-cadinol.
Germacrane derivatives from Santolina chamaecyparissus
1991
Abstract The aerial parts of Santolina chamaecyparissus subsp. squarrosa yieleded five new germacrane derivatives and a known eudesmane dialcohol.
ChemInform Abstract: New Umbelliferone Sesquiterpene Ethers from Roots of Ligularia persica.
2010
An extract of roots of Ligularia persica yielded thirteen umbelliferone sesquiterpene ethers, among them the new ones ligupersin A (11) and ligupersin B (13).
Caryophyllene derivatives from Pulicaria dysenterica
1992
Abstract A reinvestigation of the aerial parts of Pulicaria dysenterica has allowed the isolation of six new caryophyllene derivatives and 12 known ones. 13 C NMR data of all these derivatives are reported.
New acetylenes fromChrysanthemum coronarium L.
1990
The investigation of the aerial parts of Chrysanthemum coronarium yielded, in addition to several known compounds, two new acetylenic sulfoxides 9 and 10, and a new thiophene spiroacetal enol ether 11. Their structures were deduced by spectroscopic and chemical methods.
syn-1,6-imino-8,13-oxido[14]annulene
1990
Abstract syn -1,6-Imino-8,13-oxido[14]annulene (1) , an aromatic annulene featuring closely spaced NH and O-bridges, has been synthesized. Contrary to expectation, NH ⋯ O hydrogen bonding in I does not profit from the proximity of the functionalities noticeably.
Sesquiterpene lactones from Artemisia species
1993
Abstract The aerial parts of Artemisia spicigera yielded two new eudesmanolides as well as three known ones. The aerial parts of Artemisia verlotiorum yielded four known germacranolides and two known eudesmanolides.
Revision of the structure of torrentin
1989
Abstract The structure of the eudesmanolide torrentin from Artemisia herba-alba subs valentine has been revised on the basis of high-field 1 H NMR spectroscopy and chemical correlations.
Bisabolene derivatives and sesquiterpene lactones from Cousinia species
1993
Abstract The aerial parts of three species of the genus Cousinia have been investigated. All three species yielded sesquiterpene lactones, mainly guaianolides. In addition, one of the species yielded oxygenated bisabolene derivatives.
A sesquiterpene ester from Lactuca serriola
1992
Abstract The aerial parts of Lactuca serriola yielded a new guaiane ester together with five known guaianolides.
A novel germacranolide-aminoacid adduct dimer from centaurea aspera
1991
Abstract The novel germacronolide-valine adduct dimer 1 has been isolated from aerial parts of Centaurea aspera var. aspera . Its structure has been determined by spectroscopic methods.
Sesquiterpene lactones and lignans from Centaurea species
1992
Abstract The aerial parts of Centaurea calcitrapa yielded cnicin, cnicin 4′-acetate, melitensin, a related elemanolide, the two new germacranolides 11α,13- and 11β,13-dihydrosalonitenolide, and the lignans arctigenin, pinoresinol and 7′( S )-hydroxyarctigenin. The latter compound is described for the first time as a natural product. The aerial parts of Centaurea pabotii yielded 11,13-dihydrodeacylcynaropicrin, aguerin A and a new guaianolide related to cynaropicrin.
New oxygenated eudesmanolides from artemisia herba-alba
1990
Abstract The aerial parts of Artemisia herba-alba Asso subsp.valentina Lam. (Asteraceae) yielded the new eudesmanolides 1-11 and the new sesquiterpene-monoterpene adducts 12-13. The absolute configuration of compound 6 was confirmed with the aid of X-ray diffraction analysis. Some aspects of the thermal and photochemical reactivity of 2,4-cyclohexadienones are discussed.
ChemInform Abstract: New Eudesmane Derivatives from Artemisia tournefortiana
1990
Extraction of the aerial parts of Artemisia tournefortiana Reichb. yields a new cis-eudesmanolide 4 and three new eudesmane acids 7, 8, and 10, together with several known compounds. Their structures were deduced by spectroscopic and chemical methods.
Oxygenated nerolidol esters and eudesmane acids fromInula viscosa
1991
Abstract The aerial parts of Inula viscosa yielded three new esters of 9-hydroxynerolidol and two new eudesmane acids, along with several known compounds.
Sesquiterpene lactones fromArtemisia barrelieri
1991
Abstract Extraction of aerial parts of Artemisia barrelieri and chromatographic separation yielded a new germacranolide, two new monocyclic sesquiterpenes and a novel germacranolide dimer, together with several known compounds.
ChemInform Abstract: New Acetylenes from Chrysanthemum coronarium L.
1990
The investigation of the aerial parts of Chrysanthemum coronarium yielded, in addition to several known compounds, two new acetylenic sulfoxides 9 and 10, and a new thiophene spiroacetal enol ether 11. Their structures were deduced by spectroscopic and chemical methods.
Germacrane esters from roots of Ligularia persica
1991
Abstract Extraction of roots of Ligularia persica and chromatographic separation yielded one new derivative of tovarol, four new derivatives of shiromodiol, α- and β-eudesmol, bakkenolide A and four known eremophilane derivatives.
New eudesmane derivatives fromArtemisia tournefortiana
1990
Extraction of the aerial parts of Artemisia tournefortiana Reichb. yields a new cis-eudesmanolide 4 and three new eudesmane acids 7, 8, and 10, together with several known compounds. Their structures were deduced by spectroscopic and chemical methods.