... The selective decoupled (SFSD) spectra were obtained by low-power irradiation (1000 Hz) at th... more ... The selective decoupled (SFSD) spectra were obtained by low-power irradiation (1000 Hz) at the resonance 1973 Rt~' RO,, R2 ,N e R = H; R1 =R2 = OH, a HR=Bz. ... 1. Berm, MH and Jacyno, JM (1983) in A , Chemical and Biological Perspectives (Pelletier, SW, ed.) Vol. 1, Chap. ...
The furanoeremophilanes 6 beta-angeloyloxy-1,10-dehydrofuranoeremophilan-9-one (1), 6 beta-hydrox... more The furanoeremophilanes 6 beta-angeloyloxy-1,10-dehydrofuranoeremophilan-9-one (1), 6 beta-hydroxy-1,10-dehydrofuranoeremophilan-9-one (2) and 6 beta-propionyloxy-1,10-dehydrofuranoeremophilan-9-one (3) were isolated from Senecio otites, their structures elucidated by spectral analyses, and their insecticidal and phytotoxic properties evaluated. Compounds 1-3 proved to be effective aphid antifeedants against Myzus persicae and Rhopalosiphum padi and had postingestive negative effects on Spodoptera littoralis larvae. These compounds did not have any phytotoxic effects on Lactuca sativa.
... Page 2. Monooxygenase-like Oxidation of Hydrocarbons ... In the particular case of H202, simi... more ... Page 2. Monooxygenase-like Oxidation of Hydrocarbons ... In the particular case of H202, similar reactions (eq 3 and 4) would explain the propensity of Fe( 111) porphyrins to dismutate H20210h11 as well as the poor ability of Fe(porphyrin)Cl-H202 systems for hydrocarbon ...
Tesis doctoral inédita realizada en la Universidad Autónoma de Madrid, Facultad de Medicina. Depa... more Tesis doctoral inédita realizada en la Universidad Autónoma de Madrid, Facultad de Medicina. Departamento de Medicina Preventiva, Salud Pública y Microbiología y el Insituto de de Productos Naturales y Agrobiologia (CSIC) . Fecha de lectura: 28 de Mayo de 2010 Bibliografía: p. pp.271-292
Twenty-four compounds including eleven eremophilanolides (1-11), one eremophilane (13), five shik... more Twenty-four compounds including eleven eremophilanolides (1-11), one eremophilane (13), five shikimic acid derivatives (14-18), six flavonoids (19-24), and the macrocyclic unsaturated pyrrolizidine alkaloid integerrimine (25) were isolated from Senecio kingii, an endemic species from the Magallanes Region (Chile). Compounds 3, 5, 6, 8-11 and 13-18 have not been previously reported as natural products. Their molecular structures were determined by NMR spectroscopic analysis and comparison with published NMR data. An X-ray-analysis of compound 3 has been performed. Their insecticidal and antifungal activities were tested, being compound 3 the strongest insect antifeedant. Compounds 6, 9 and 18 were moderate antifungals.
... A CASE STUDY A. GONZALEZ-COLOMA ^\ M. REINA^ C. GUTIERREZ\ BM FRAGA^ ^Centro de Ciencias Medi... more ... A CASE STUDY A. GONZALEZ-COLOMA ^\ M. REINA^ C. GUTIERREZ\ BM FRAGA^ ^Centro de Ciencias Medioambientales, CSIC, Serrano 115-dpdo ... We have focused mainly on the flora of the Canarian Archipelago because of its rich biodiversity (Lauraceae, Compositae ...
The structures of a new eudesmane sesquiterpene, lauradiol, and a new secoeudesmane, azoridione, ... more The structures of a new eudesmane sesquiterpene, lauradiol, and a new secoeudesmane, azoridione, have been determined by spectroscopic methods. These compounds and the known sesquiterpenic alcohols, clovanediol and caryophyllenol II, have been isolated from the aerial parts of Laurus azorica.
Zeitschrift für Naturforschung. C, Journal of biosciences
The furanoeremophilanes 6 beta-angeloyloxy-1,10-dehydrofuranoeremophilan-9-one (1), 6 beta-hydrox... more The furanoeremophilanes 6 beta-angeloyloxy-1,10-dehydrofuranoeremophilan-9-one (1), 6 beta-hydroxy-1,10-dehydrofuranoeremophilan-9-one (2) and 6 beta-propionyloxy-1,10-dehydrofuranoeremophilan-9-one (3) were isolated from Senecio otites, their structures elucidated by spectral analyses, and their insecticidal and phytotoxic properties evaluated. Compounds 1-3 proved to be effective aphid antifeedants against Myzus persicae and Rhopalosiphum padi and had postingestive negative effects on Spodoptera littoralis larvae. These compounds did not have any phytotoxic effects on Lactuca sativa.
ABSTRACT The absolute configuration (AC) of (+)-2R,7R,15R,17S,19S-10-demethoxy-12-hydroxy-17,19-e... more ABSTRACT The absolute configuration (AC) of (+)-2R,7R,15R,17S,19S-10-demethoxy-12-hydroxy-17,19-epoxygeissovelline (1), a main aspidospermatan-type indoline alkaloid from Geissospermum reticulatum, was established by vibrational circular dichroism (VCD), facilitating deduction of the AC of all structurally related alkaloids isolated from this plant.
... Page 2. Monooxygenase-like Oxidation of Hydrocarbons ... In the particular case of H202, simi... more ... Page 2. Monooxygenase-like Oxidation of Hydrocarbons ... In the particular case of H202, similar reactions (eq 3 and 4) would explain the propensity of Fe( 111) porphyrins to dismutate H20210h11 as well as the poor ability of Fe(porphyrin)Cl-H202 systems for hydrocarbon ...
... The selective decoupled (SFSD) spectra were obtained by low-power irradiation (1000 Hz) at th... more ... The selective decoupled (SFSD) spectra were obtained by low-power irradiation (1000 Hz) at the resonance 1973 Rt~' RO,, R2 ,N e R = H; R1 =R2 = OH, a HR=Bz. ... 1. Berm, MH and Jacyno, JM (1983) in A , Chemical and Biological Perspectives (Pelletier, SW, ed.) Vol. 1, Chap. ...
The furanoeremophilanes 6 beta-angeloyloxy-1,10-dehydrofuranoeremophilan-9-one (1), 6 beta-hydrox... more The furanoeremophilanes 6 beta-angeloyloxy-1,10-dehydrofuranoeremophilan-9-one (1), 6 beta-hydroxy-1,10-dehydrofuranoeremophilan-9-one (2) and 6 beta-propionyloxy-1,10-dehydrofuranoeremophilan-9-one (3) were isolated from Senecio otites, their structures elucidated by spectral analyses, and their insecticidal and phytotoxic properties evaluated. Compounds 1-3 proved to be effective aphid antifeedants against Myzus persicae and Rhopalosiphum padi and had postingestive negative effects on Spodoptera littoralis larvae. These compounds did not have any phytotoxic effects on Lactuca sativa.
... Page 2. Monooxygenase-like Oxidation of Hydrocarbons ... In the particular case of H202, simi... more ... Page 2. Monooxygenase-like Oxidation of Hydrocarbons ... In the particular case of H202, similar reactions (eq 3 and 4) would explain the propensity of Fe( 111) porphyrins to dismutate H20210h11 as well as the poor ability of Fe(porphyrin)Cl-H202 systems for hydrocarbon ...
Tesis doctoral inédita realizada en la Universidad Autónoma de Madrid, Facultad de Medicina. Depa... more Tesis doctoral inédita realizada en la Universidad Autónoma de Madrid, Facultad de Medicina. Departamento de Medicina Preventiva, Salud Pública y Microbiología y el Insituto de de Productos Naturales y Agrobiologia (CSIC) . Fecha de lectura: 28 de Mayo de 2010 Bibliografía: p. pp.271-292
Twenty-four compounds including eleven eremophilanolides (1-11), one eremophilane (13), five shik... more Twenty-four compounds including eleven eremophilanolides (1-11), one eremophilane (13), five shikimic acid derivatives (14-18), six flavonoids (19-24), and the macrocyclic unsaturated pyrrolizidine alkaloid integerrimine (25) were isolated from Senecio kingii, an endemic species from the Magallanes Region (Chile). Compounds 3, 5, 6, 8-11 and 13-18 have not been previously reported as natural products. Their molecular structures were determined by NMR spectroscopic analysis and comparison with published NMR data. An X-ray-analysis of compound 3 has been performed. Their insecticidal and antifungal activities were tested, being compound 3 the strongest insect antifeedant. Compounds 6, 9 and 18 were moderate antifungals.
... A CASE STUDY A. GONZALEZ-COLOMA ^\ M. REINA^ C. GUTIERREZ\ BM FRAGA^ ^Centro de Ciencias Medi... more ... A CASE STUDY A. GONZALEZ-COLOMA ^\ M. REINA^ C. GUTIERREZ\ BM FRAGA^ ^Centro de Ciencias Medioambientales, CSIC, Serrano 115-dpdo ... We have focused mainly on the flora of the Canarian Archipelago because of its rich biodiversity (Lauraceae, Compositae ...
The structures of a new eudesmane sesquiterpene, lauradiol, and a new secoeudesmane, azoridione, ... more The structures of a new eudesmane sesquiterpene, lauradiol, and a new secoeudesmane, azoridione, have been determined by spectroscopic methods. These compounds and the known sesquiterpenic alcohols, clovanediol and caryophyllenol II, have been isolated from the aerial parts of Laurus azorica.
Zeitschrift für Naturforschung. C, Journal of biosciences
The furanoeremophilanes 6 beta-angeloyloxy-1,10-dehydrofuranoeremophilan-9-one (1), 6 beta-hydrox... more The furanoeremophilanes 6 beta-angeloyloxy-1,10-dehydrofuranoeremophilan-9-one (1), 6 beta-hydroxy-1,10-dehydrofuranoeremophilan-9-one (2) and 6 beta-propionyloxy-1,10-dehydrofuranoeremophilan-9-one (3) were isolated from Senecio otites, their structures elucidated by spectral analyses, and their insecticidal and phytotoxic properties evaluated. Compounds 1-3 proved to be effective aphid antifeedants against Myzus persicae and Rhopalosiphum padi and had postingestive negative effects on Spodoptera littoralis larvae. These compounds did not have any phytotoxic effects on Lactuca sativa.
ABSTRACT The absolute configuration (AC) of (+)-2R,7R,15R,17S,19S-10-demethoxy-12-hydroxy-17,19-e... more ABSTRACT The absolute configuration (AC) of (+)-2R,7R,15R,17S,19S-10-demethoxy-12-hydroxy-17,19-epoxygeissovelline (1), a main aspidospermatan-type indoline alkaloid from Geissospermum reticulatum, was established by vibrational circular dichroism (VCD), facilitating deduction of the AC of all structurally related alkaloids isolated from this plant.
... Page 2. Monooxygenase-like Oxidation of Hydrocarbons ... In the particular case of H202, simi... more ... Page 2. Monooxygenase-like Oxidation of Hydrocarbons ... In the particular case of H202, similar reactions (eq 3 and 4) would explain the propensity of Fe( 111) porphyrins to dismutate H20210h11 as well as the poor ability of Fe(porphyrin)Cl-H202 systems for hydrocarbon ...
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