Contexto: Laurelia sempervirens (R. et P.) Tul., es un arbol de hoja perenne que crece en el sur ... more Contexto: Laurelia sempervirens (R. et P.) Tul., es un arbol de hoja perenne que crece en el sur de Chile, sus hojas y corteza se utilizan en medicina popular como infusion. Objetivo : Investigar la actividad antimicrobiana del aceite esencial y el extracto de acetato de etilo obtenido de la corteza de Laurelia sempervirens . Materiales y metodos : El extracto de acetato de etilo y el aceite esencial se analizaron por GC-masa y la actividad antimicrobiana se analizo contra bacterias gram positivas y gram negativas. Resultados : El extracto y aceite esencial evidencio una fuerte actividad antimicrobiana frente a la bacteria, Acinetobacter baumanii patogeno que causa infecciones nosocomiales de relevancia mundial . Discusion y conclusiones : Estos hallazgos demuestran que el extracto de acetato de etilo y aceite esencial de corteza de L.sempervirens tienen excelentes actividades antimicrobianas y por lo tanto tienen un gran potencial como fuente de productos naturales para la salud.
Acta Crystallographica Section E Structure Reports Online, 2006
Molecules in the title crystal structure, C20H24O4, are linked into chains of R 4 4(8) rings alon... more Molecules in the title crystal structure, C20H24O4, are linked into chains of R 4 4(8) rings along [010] and these chains are linked into sheets via weak C—H...π(arene) interactions. These sheets are, in turn, linked via weak C—H...π(arene) and C—H...O interactions into a three-dimensional network. The ethyl substituent is disordered over two sites with refined occupancies of 0.700 (5) and 0.300 (5).
Acta Crystallographica Section E Structure Reports Online, 2006
# # h,k,l, Fc-squared, Fo-squared, sigma(Fo-squared) and status flag # data_I _shelx_title '... more # # h,k,l, Fc-squared, Fo-squared, sigma(Fo-squared) and status flag # data_I _shelx_title ' hc2 in P2(1)/c' _shelx_refln_list_code 4 _shelx_F_calc_maximum 200.33 _exptl_crystal_F_000 528.00 _reflns_d_resolution_high 0.8000 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x ...
The lichen Pseudocyphellaria coriifolia is a species endemic to southern South America. From the ... more The lichen Pseudocyphellaria coriifolia is a species endemic to southern South America. From the lichen thallus, methyl evernate, tenuiorin and three hopane triterpenoids were isolated and identified as the main lichen constituents. Their trypanocidal effects were screened against epimastigotes of Trypanosoma cruzi. The results of the biological test showed that some hopane terpenoids exhibit antiparasitic properties.
The lichen Pseudocyphellaria coriifolia is a species endemic to southern South America. From the ... more The lichen Pseudocyphellaria coriifolia is a species endemic to southern South America. From the lichen thallus, methyl evernate, tenuiorin and three hopane triterpenoids were isolated and identified as the main lichen constituents. Their trypanocidal effects were screened against epimastigotes of Trypanosoma cruzi. The results of the biological test showed that some hopane terpenoids exhibit antiparasitic properties.
Acta Crystallographica Section E Structure Reports Online, 2006
# # h,k,l, Fc-squared, Fo-squared, sigma(Fo-squared) and status flag # data_I _shelx_title '... more # # h,k,l, Fc-squared, Fo-squared, sigma(Fo-squared) and status flag # data_I _shelx_title ' hc2 in P2(1)/c' _shelx_refln_list_code 4 _shelx_F_calc_maximum 200.33 _exptl_crystal_F_000 528.00 _reflns_d_resolution_high 0.8000 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x ...
Contexto: Laurelia sempervirens (R. et P.) Tul., es un arbol de hoja perenne que crece en el sur ... more Contexto: Laurelia sempervirens (R. et P.) Tul., es un arbol de hoja perenne que crece en el sur de Chile, sus hojas y corteza se utilizan en medicina popular como infusion. Objetivo : Investigar la actividad antimicrobiana del aceite esencial y el extracto de acetato de etilo obtenido de la corteza de Laurelia sempervirens . Materiales y metodos : El extracto de acetato de etilo y el aceite esencial se analizaron por GC-masa y la actividad antimicrobiana se analizo contra bacterias gram positivas y gram negativas. Resultados : El extracto y aceite esencial evidencio una fuerte actividad antimicrobiana frente a la bacteria, Acinetobacter baumanii patogeno que causa infecciones nosocomiales de relevancia mundial . Discusion y conclusiones : Estos hallazgos demuestran que el extracto de acetato de etilo y aceite esencial de corteza de L.sempervirens tienen excelentes actividades antimicrobianas y por lo tanto tienen un gran potencial como fuente de productos naturales para la salud.
Acta Crystallographica Section E Structure Reports Online, 2006
Molecules in the title crystal structure, C20H24O4, are linked into chains of R 4 4(8) rings alon... more Molecules in the title crystal structure, C20H24O4, are linked into chains of R 4 4(8) rings along [010] and these chains are linked into sheets via weak C—H...π(arene) interactions. These sheets are, in turn, linked via weak C—H...π(arene) and C—H...O interactions into a three-dimensional network. The ethyl substituent is disordered over two sites with refined occupancies of 0.700 (5) and 0.300 (5).
Acta Crystallographica Section E Structure Reports Online, 2006
# # h,k,l, Fc-squared, Fo-squared, sigma(Fo-squared) and status flag # data_I _shelx_title '... more # # h,k,l, Fc-squared, Fo-squared, sigma(Fo-squared) and status flag # data_I _shelx_title ' hc2 in P2(1)/c' _shelx_refln_list_code 4 _shelx_F_calc_maximum 200.33 _exptl_crystal_F_000 528.00 _reflns_d_resolution_high 0.8000 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x ...
The lichen Pseudocyphellaria coriifolia is a species endemic to southern South America. From the ... more The lichen Pseudocyphellaria coriifolia is a species endemic to southern South America. From the lichen thallus, methyl evernate, tenuiorin and three hopane triterpenoids were isolated and identified as the main lichen constituents. Their trypanocidal effects were screened against epimastigotes of Trypanosoma cruzi. The results of the biological test showed that some hopane terpenoids exhibit antiparasitic properties.
The lichen Pseudocyphellaria coriifolia is a species endemic to southern South America. From the ... more The lichen Pseudocyphellaria coriifolia is a species endemic to southern South America. From the lichen thallus, methyl evernate, tenuiorin and three hopane triterpenoids were isolated and identified as the main lichen constituents. Their trypanocidal effects were screened against epimastigotes of Trypanosoma cruzi. The results of the biological test showed that some hopane terpenoids exhibit antiparasitic properties.
Acta Crystallographica Section E Structure Reports Online, 2006
# # h,k,l, Fc-squared, Fo-squared, sigma(Fo-squared) and status flag # data_I _shelx_title '... more # # h,k,l, Fc-squared, Fo-squared, sigma(Fo-squared) and status flag # data_I _shelx_title ' hc2 in P2(1)/c' _shelx_refln_list_code 4 _shelx_F_calc_maximum 200.33 _exptl_crystal_F_000 528.00 _reflns_d_resolution_high 0.8000 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x ...
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Papers by Hector Carrasco-Altamirano