Results 1 to 10 of about 1,635 (132)

Sesquiterpenos de Ocotea lancifolia (Lauraceae) [PDF]

open access: yesQuimica Nova, 2013
Six new eremophilane sesquiterpenes, (rel)-4β,5β,7β-eremophil-9-en-12-oic acid (1), (rel)-4β,5β,7β-eremophil-1(10)-en-12-oic acid (2), (rel)-4β,5β,7β-eremophil-1(10)-en-2-oxo-12-oic acid (3), (rel)-4β,5β,7β-eremophil-9-en-12,8α-olide (4), (rel)-4β,5β,7β ...
Edilene Delphino Rodrigues   +2 more
exaly   +5 more sources

Flavonoides e sesquiterpenos de Croton pedicellatus Kunth [PDF]

open access: yesQuimica Nova, 2012
The chemical investigation of the ethanolic extract from leaves of Croton pedicellatus yielded the bis-nor-sesquiterpenes blumenol A and blumenol A glucoside, along with the flavonoids: tiliroside, 6"-O-p-coumaroyl-β-galactopyranosyl- kaempferol, 6"-O-p ...
Raimundo Braz Filho   +1 more
exaly   +5 more sources

Sesquiterpenos de sementes de Guarea guidonia (Meliaceae) [PDF]

open access: yesQuimica Nova, 2012
Two new sesquiterpenes 6α-ethoxyeudesm-4(15)-en-1β-ol (1) and (7R*)-5-epi-opposit-4(15)-ene-1β,7-diol (7) were isolated from the seeds of a specimen of Guarea guidonia (Meliaceae).
Fernanda Rodrigues Garcez   +1 more
exaly   +5 more sources

Sesquiterpenos do caule de Pilocarpus riedelianus e atividades sobre microorganismos [PDF]

open access: yesQuimica Nova, 2005
Pilocarpus riedelianus was studied in order to obtain compounds with activity against fungi and bacteria. The dichloromethane extract, the most active one, was chromatographed yielding hexane and dichloromethane fractions. Six known sesquiterpenes, a-calacorene, b-calacorene, g-calacorene, cadalene, sesquichamaenol and 1-hydroxy-1,3,5-bisabolatrien-10 ...
José Rubens Pirani   +2 more
exaly   +8 more sources

Identificação de componentes de óleos voláteis: Análise espectroscópica de misturas de sesquiterpenos [PDF]

open access: yesQuimica Nova, 1999
This paper describes a chromatographic method to fractionate volatile oils and to identify their sesquiterpenic constituents. The fractionation process includes flash chromatography over silica gel and chromatography over silica gel/AgNO3, utilising pentane, CH2Cl2 and/or acetone as eluents.
Mariana Helena Chaves   +2 more
exaly   +6 more sources

Sesquiterpenos das algas marinhas Laurencia Lamouroux (Ceramiales, Rhodophyta) 1: Significado ecológico [PDF]

open access: yesQuimica Nova, 1999
The present work is a revision on the ecological significance of the production of sesquiterpenes by the marine algae of the genus Laurencia (Ceramiales, Rhodophyta).
Valeria Laneuville Teixeira
exaly   +6 more sources

Sesquiterpenos produzidos pelo fungo endofítico Phomopsis cassiae com atividade antifúngica e inibidora de acetilcolinesterase [PDF]

open access: yesQuimica Nova, 2012
SESQUITERPENES PRODUCED BY ENDOPHYTIC FUNGUS Phomopsis cassiae WITH ANTIFUNGAL AND ACETYLCHOLINESTERASE INHIBITION ACTIVITIES. Two new diastereoisomeric cadinanes sesquiterpenes 3,9-dihydroxycalamenene (1-2), along with the known 3-hydroxycalamen-8-one ...
Angela R. Araujo   +2 more
exaly   +6 more sources

Actividad insecticida potencial de sesquiterpenos presentes en Dalea coerulea (L. f.) Schinz. et Thellung.

open access: yesAgronomía Colombiana, 1994
<p class="MsoNormal" style="text-align: justify; line-height: normal; margin: 0cm 0cm 0pt; mso-layout-grid-align: none;"><span style="font-family: ">El extracto en éter de petróleo de la parte aérea de </span><em><span style ...
Arango B Alba Isabel   +3 more
doaj   +3 more sources

A síntese dos sesquiterpenos baquenolidas The synthesis of the bakkenolide sesquiterpenes

open access: yesQuímica Nova, 2008
The bakkenolide group of sesquiterpenes has been a focal point of synthetic efforts amongst several research laboratories all linked to our common origins at the Chemistry Institute at the State University in São Paulo.
Timothy John Brocksom   +2 more
doaj   +2 more sources

Sesquiterpenos e outros constituintes das folhas de Pterodon pubescens Benth (Leguminosae)

open access: yesQuímica Nova, 2014
In addition to β-sitosterol, stigmasterol, phaeophitin A, luteolin, kaempferol, quercetin, (+)-catechin, quercetin-3-O-α-L-rhamnopyranoside, rutin, and p-hydroxy-benzoic acid, six known sesquiterpenes, namely (rel)-2β,6β-epoxy-5β-hydroxy-isodaucane ...
Mayker Lazaro Dantas Miranda   +3 more
doaj   +3 more sources

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