| dc.rights.license | http://creativecommons.org/licenses/by-nc-sa/3.0/ve/ | es_VE |
| dc.contributor.author | Hamdan-Sánchez, Mager | |
| dc.contributor.author | Rojas, Luis B. | |
| dc.contributor.author | Obregón Díaz, Ysbelia | |
| dc.contributor.author | Aparicio Z., Rosa L. | |
| dc.contributor.author | Pérez Colmenares, Alida | |
| dc.contributor.author | Cordero de Rojas, Yndra | |
| dc.contributor.author | Díaz, Clara | |
| dc.contributor.author | Da Silva-Rojas, Jossblerys | |
| dc.contributor.author | Usubillaga, Alfredo | |
| dc.date.accessioned | 2022-07-20T15:53:15Z | |
| dc.date.available | 2022-07-20T15:53:15Z | |
| dc.date.issued | 2022-07-20 | |
| dc.identifier.issn | 0543- 517-X | |
| dc.identifier.uri | http://www.saber.ula.ve/handle/123456789/48327 | |
| dc.description.abstract | La obtención de seis nuevos derivados hemisintéticos a partir de ent-kaurenol (I), se realizó mediante la reacción de
esterificación de Steglich empleando los ácidos p-cloro-fenil-acético, o-cloro-fenil-acético, m-cloro-fenil-acético,
p-bromo-fenil-acético, nicotínico y salicílico; utilizando la combinación de diciclohexilcarbodiimida (DCC, agente de
acoplamiento), 4-dimetilaminopiridina (DMAP, catalizador nucleofílico) y como solvente el diclorometano. Todos los
compuestos fueron caracterizados mediante técnicas espectroscópicas de IR y RMN uni y bidimensionales, lográndose
identificar como ent-kaur-19-O-[2’-(p-cloro-fenil)-carboximetil]-16-eno (II), ent-kaur-19-O-[2´-(o-cloro-fenil)-
carboximetil]-16-eno (III), ent-kaur-19-O-[2’-(m-cloro-fenil)-carboximetil]-16-eno (IV), ent-kaur-19-O-[2’-(p-bromo-
fenil)-carboximetil]-16-eno (V), ent-kaur-19-O-(m-piridil-carboxil)-16-eno (VI) y ent-kaur-19-O-(o-hidroxi-fenil-
carboxil)-16-eno (VII). Estos compuestos no presentaron actividad antimicrobiana mediante el método de difusión en
agar en pozo frente a cepas ATCC de Staphylococcus aureus, Escherichia coli, Enterococcus faecalis, Klebsiella
pneumoniae, Pseudomonas aeruginosa y Candida albicans a una concentración de 2 mg/mL. | es_VE |
| dc.language.iso | es | es_VE |
| dc.publisher | SaberULA | es_VE |
| dc.rights | info:eu-repo/semantics/openAccess | es_VE |
| dc.subject | Diterpenos | es_VE |
| dc.subject | Ent-kaureno | es_VE |
| dc.subject | Ent-kaurenol | es_VE |
| dc.subject | Esterificación de Steglich | es_VE |
| dc.subject | Actividad antimicrobiana | es_VE |
| dc.title | Derivados hemisintéticos del ent-kaurenol y evaluación de su actividad antimicrobiana | es_VE |
| dc.title.alternative | Hemisynthetic derivatives of ent-kaurenol and evaluation of their antimicrobial activity | es_VE |
| dc.type | info:eu-repo/semantics/article | es_VE |
| dcterms.dateAccepted | junio de 2022 | |
| dcterms.dateSubmitted | marzo de 2022 | |
| dc.description.abstract1 | Hemisynthetic derivatives of ent-kaurenol and evaluation of their antimicrobial activity.
Six new hemisynthetic derivatives were obtained from ent-kaurenol (I), this was performed by the Steglich
esterification reaction using p-chloro-phenyl-acetic acid, o-chloro-phenyl-acetic acid, m-chloro-phenyl-acetic, p-
bromo-phenyl-acetic, nicotinic and salicylic; using the combination of dicyclohexylcarbodiimide (DCC, coupling
agent), 4-dimethylaminopyridine (DMAP, nucleophilic catalyst) and dichloromethane as solvent. All compounds were
characterized by one- and two-dimensional NMR,IR spectroscopic techniques and were identified as ent-kaur-19-O-[2'-
(p-chloro-phenyl)-carboxymethyl]-16-ene (II), ent-kaur-19-O-[2’-(o-chloro-phenyl)-carboxymethyl]-16-ene (III), ent-
kaur-19-O-[2’-(m-chloro-phenyl)-carboxymethyl]-16-ene (IV), ent-kaur-19-O-[2´-(p-bromo-phenyl)-carboxymethyl]-16-ene
(V), ent-kaur-19-O-(m-pyridyl-carboxyl)-16-ene (VI) and ent-kaur-19-O-(o-hydroxy-phenyl-carboxyl-16-ene (VII). These
compounds did not exhibit antimicrobial activity by the well agar diffusion method against ATCC strains of
Staphylococcus aureus, Escherichia coli, Enterococcus faecalis, Klebsiella pneumoniae, Pseudomonas aeruginosa and
Candida albicans at the concentration of 2 mg/mL. | es_VE |
| dc.description.colacion | 20-28 | es_VE |
| dc.description.email | ysbeliaobregon@gmail.com | es_VE |
| dc.description.frecuencia | Semestral | |
| dc.description.paginaweb | http://www.saber.ula.ve/farmacia/ | |
| dc.identifier.depositolegal | pp195802ME1003 | |
| dc.identifier.edepositolegal | ppi201202ME4102 | |
| dc.identifier.eissn | 2244-8845 | |
| dc.publisher.pais | Venezuela | es_VE |
| dc.subject.institucion | Universidad de Los Andes | es_VE |
| dc.subject.keywords | Diterpenes | es_VE |
| dc.subject.keywords | Ent-kaurene | es_VE |
| dc.subject.keywords | Ent-kaurenol | es_VE |
| dc.subject.keywords | Steglich esterification | es_VE |
| dc.subject.keywords | Hemisynthetic derivatives | es_VE |
| dc.subject.seccion | Revista de la Facultad de Farmacia: Artículos | es_VE |
| dc.subject.tipo | Artículos | es_VE |
| dc.type.media | Texto | es_VE |
| dc.identifier.doi | https://doi.org/10.53766/REFA/2022.64.01.03 | es |