Artículos de revistas: Recent submissions
Now showing items 3941-3960 of 4968
-
(Pergamon Press plc., 1988-01-27)Bisbenzylisoquinoline alkaloid-producing cell cultures of Berberis stolonifera were fed with 14C-Iabelled tyrosine, tyramine, and several chiral l-benzyl-l,2,3,4-tetrahydroisoquinolines. Berbamunine subsequently isolated from ...
-
(Pergamon Journals Ltd., 1986-12-18)Precursor feeding experiments to Annona reticulata leaves demonstrated that coclaurine and reticuline are both derived from the common lntermediate norcoclaurine; furthermore (S)-coclaurlne was found to be the speciflc ...
-
(Pergamon Press Ltd., 1993-03-23)Four amphetamine derivatives bearing a methylenedioxy group at positions 3 and 4 of the benzene ring and differing in their substitution at C(6) were studied by differential pulse voltammetry in aqueous media. These ...
-
(Elsevier , Science Ltd., 1992-11-02)
-
(Elsevier Science Inc., 1992-11-02)
-
(Pergamon Press, 1989-09-06)The stem bark of Persea lingue afforded a new aryltetralin lignan, named lingueresinol, which was shown to be a positional isomer of epi-lyoniresinol.
-
(Laboratorios Mixim S.A., 1988)Se describe la síntesis de una serie de 2-aril-l,3-dinitropropanos por condensación de benzaldehidos con nitrometano. Estos compuestos tienen utilidad potencial como precursores de 2-aril-1,3-dinitropropanos, los que ...
-
(Sociedad Chilena de Química, 1990-04-16)La bromación del 2,5-dimetoxibenzaldehído en ácido acético dió 4-bromo2,5- dimetoxi-y 2-bromo-3,6-dimetoxibenzaldehído en una razón de 4:1. El primero de éstos sufrió sustituciones nucleofilicas con tioles en DMF ...
-
(Elsevier Science Inc., 1997)The monoamine oxidase (MAO) inhibitory propenies of a series of amphetamine derivatives with difTerent substituents at or around rhe para position of the aromaric ring were evaluateJ. i¡, in viero stuJies in which a crude ...
-
(Elsevier , Science Ltd., 1993-02-16)I, 2C·fI 12'(2,5.dimelhoxYJ'hcny1)elhyl;mlil1cj (1'°1 ." Ií, 7-1),1 1\II'F,\ pp,1,.~. trlmelhoxyphenyl)elhylnl11il1el (pDz = 5.81). ,c·n (2(2,5 ditnrfh,,:(y.-1I11f:lhylpIH~lIy')("',yl:"I1II1('1 (pO, = 5.06), homovelalrylnmlne ...
-
(Elsevier , Science Ltd., 1991-11-26)A set of 2,5-dimethoxyamphetarnines differing in their substitution at C4 was studied by differential pulse voltammetry and linear scan cyclic voltammetry in aqueous media. These experiments showed a single oxydation ...
-
(Pergamon Press, 1990-11-30)Boldine, in low micromolar concentrations, was able to prevent brain bomogenate autooxidatíon, the 2,2'·uobis(2·amidinopropane)(AAP)·induced Iipid peroxidation of red cell plasma rnembranes, and the AAP·induced inactivation ...
-
(Laboratorios Mixim, S.A., 1979)SOJlhork'".ide .,..1 \-al.led In 2,3~ yi.ld 'rom IlI&Vft 01 SclliIJIIS I.,jfoUlIs (An.c.rdl.c •• e), used u a lolk ~unlr.~épliv,. Thi. compoulld mi)' be relpon.lblc '01 Ihe plent', .ttrlhuted llltif,nill1y pmpel1lí1,
-
(Sociedad Chilena de Química, 1993-10-15)The electrochemistry 01 a series 01 monoamine oxidase-inhibitory 4-Nmethyl and N,N-dimethylaminophenethylamines was studied using cyclic voltammetry. Electron transler was irreversible both in aqueous buffer.(pH = 7.4) and ...
-
(EIsevier Science Inc., 1997-10-03)1. Ten racemic ~-alkoxy-~-phenylethylamines were found to elicit concentrationdependent contraction of the isolated rat thoracic aorta with apparent pD2 values in the 4.56-6.76 range. With one exception, which produces ...
-
(Elsevier , Science Ltd., 1994-04-04)4-Dimethylaminophenethylamine (DMAPEA) was characterized as an MAO substrate. This compound was unaffected by MAO-A, while its oxidation by MAO-B was linear as a function of both time and enzyme concentration, with Km = ...
-
(Sociedad de Neurología, Psiquiatría y Neurocirugía, 1989)En este trabajo se analiza el conocimiento actual sobre los receptores o y PCP/NMDA. Se enfatiza que el haloperidol y muchos otros antipsicóticos similares presentan una afinidad relativamente alta por el receptor o. ...
-
(EIsevier Science Ltd., 1994-04-04)4-Dimethylaminophenethylamine (DMAPEA) was characterized as an MAO substrate. This compound was unaffected by MAO-A, while its oxidation by MAO-B was linear as a function of both time and enzyme concentration, with Km = ...
-
(Elsevier Science Ltd., 1993-11-13)The in vitra and ex viva monoamine oxidase (MAO) inhibitory effects of (±)4-dimethylaminoa- methyl-phenethylamine (4-DMAA) and (± )4-methylamino-a-methyl-phenethylamine (4-MAA) were reassessed, in comparison with the ...
-
(Marcel Dekker. Inc., 1987-04-11)Thymine dimers were obtained under ultraviolet irradiation. The major product is a trans-anti dimer linked by a cyclobutane ring. The infrared assignments and the mechanism of formation of this dimer are discussed in ...
