Zobrazeno 1 - 10
of 518
pro vyhledávání: '"Pedro Joseph‐Nathan"'
Autor:
Dawrin Pech-Puch, Pedro Joseph-Nathan, Eleuterio Burgueño-Tapia, Carlos González-Salas, Diana Martínez-Matamoros, David M. Pereira, Renato B. Pereira, Carlos Jiménez, Jaime Rodríguez
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
Abstract The four new briarane diterpenoids 2-butyryloxybriarane B-3 (2), 9-acetylbriarenolide S (3), briarenolide W (4), and 12-isobriarenolide P (5), along with briarane B-3 (1) and the five known diterpenes 6–10 were isolated from the gorgonian
Externí odkaz:
https://doaj.org/article/78f116e0c21947f59551bf9400e5f299
Autor:
Ernesto Valdés, César González, Katy Díaz, Yesseny Vásquez-Martínez, Carolina Mascayano, Claudia Torrent, Francisco Cabezas, Sophia Mejias, Margarita Montoya, Marcelo Cortez-San Martín, Marcelo A. Muñoz, Pedro Joseph-Nathan, Mauricio Osorio, Lautaro Taborga
Publikováno v:
Frontiers in Pharmacology, Vol 11 (2020)
Flavanones (–)-(2S)-5,4’-dihydroxy-7-methoxyflavanone (1) and (–)-(2S)-5,3’,4’-trihydroxy-7-methoxyflavanone (2) were isolated from the extracts of Calceolariathyrsiflora Graham, an endemic perennial small shrub growing in the central zone
Externí odkaz:
https://doaj.org/article/f20cfe0a59b248a9b648ea21a58476f5
Autor:
Jairo Calle, Augusto Rivera, Javier Gutiérrez Luis, Zahira E. Aguiar, Hermann M. Niemeyer, Pedro Joseph-Nathan
Publikováno v:
Revista Colombiana de Química, Vol 19, Iss 1, Pp 91-96 (2010)
Se estableció que el extracto de éter de petróleo (pe 40-60"') de Ageratum conyzoides L. presenta fuerte actividad insecticida contra larvas de tercer estadio de Musca domestica (Díptera), contra larvas de tercer, cuarto y quinto estadio de Cynth
Externí odkaz:
https://doaj.org/article/a08600d522da4d65af9b858c7a995131
Autor:
Baldomero Esquivel, Celia Bustos-Brito, Mariano Sánchez-Castellanos, Antonio Nieto-Camacho, Teresa Ramírez-Apan, Pedro Joseph-Nathan, Leovigildo Quijano
Publikováno v:
Molecules, Vol 22, Iss 10, p 1690 (2017)
From the aerial parts of Salvia ballotiflora, eleven diterpenoids were isolated; among them, four icetexanes and one abietane (1–5) are reported for the first time. Their structures were established by spectroscopic means, mainly 1H- and 13C-NMR, i
Externí odkaz:
https://doaj.org/article/e1fc7c92c1d04615b13022ce51ba77df
Publikováno v:
Revista Colombiana de Química, Vol 19, Iss 1, Pp 123-125 (2010)
Investigaciones químicas de especies pertenecientes al géntro Phoebe, reportan el aislamiento de alcaloides aporfínicos y oxoaporfínicos (1). Phoebe cinnamomifolia es una especie arbórea de las regiones Andina y Amazónica de Colombia; de su co
Externí odkaz:
https://doaj.org/article/f7ddee688af14c2d91d051d526f75e69
Autor:
Marcelo A. Muñoz, Pedro Joseph‐Nathan
Publikováno v:
Chirality. 34:559-570
The use of IR individual scaling factors (ISF) for the correction of DFT-calculated frequencies, and its effect on IR and VCD similarity functions, has been evaluated using (+)-(R)-3-methylcyclopentanone as a probe molecule. Contrary to using a singl
Publikováno v:
ChiralityREFERENCES. 35(1)
Evaluation of DFT calculated vibrational parameters for the IR and VCD spectra similarity of perezone (1) and dihydroperezone (2) was undertaken. Conformational sets were obtained using different search engines, and the parameters needed for spectra
Autor:
J. Martín Torres-Valencia, Carlos M. Cerda-García-Rojas, Pedro Joseph-Nathan, Héctor M. Arreaga-González, Antonio J. Oliveros-Ortiz, Gabriela Rodríguez-García, Mario A. Gómez-Hurtado, Rosa E. del Río
Publikováno v:
Journal of Natural Products. 84:707-712
Since epoxythymols occur in Nature either as scalemic mixtures or as pure enantiomers, the knowledge of their chiral composition and of the absolute configuration (AC) of the dominant enantiomer tu...
Autor:
Rosa E. del Río, Gabriela Rodríguez-García, Mario A. Gómez-Hurtado, Carlos M. Cerda-García-Rojas, Ana K. Villagomez-Guzman, Pedro Joseph-Nathan, Antonio J. Oliveros Ortiz
Publikováno v:
Chemistry of Natural Compounds. 57:319-322
A known kaurenoic acid (1), together with a new kaurane derivative named 3α-isobutyryloxykaurenoic acid (2), was isolated from the roots of Lasianthaea aurea, a plant endemic to Mexico. The compounds were characterized using their physical and spect