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Lithiation of N-(2,2-diethoxyethyl)benzylamines I (R = Me, PhCH2) and reaction with electrophiles followed by acid-catalyzed cyclization leads to isoquinolines II (R1 = Me, MeO, CH2OH, MeS, Cl, Br, iodo) in 37-75% yield. [on SciFinder (R)] ...
The effects of subcutaneous administration of leu-enkephalin (LEU-E) (10, 100 and 300 micrograms/kg) and LEU-E (100 micrograms/kg) plus naloxone (2.5 mg/kg) on ethanol preference and fluid intake have been investigated in rats. Under our procedural conditi ...
Attention has been focused on the possibility of an interaction between the endorphinergic system and ethanol intake. In the present study, the effects of subcutaneous (SC) administration of beta-endorphin (beta-E) (0.25, 1 and 5 micrograms/kg) and/or nalo ...
The effect of subcutaneous naloxone administration on the consumption of a weak ethanol solution in rats on the three consecutive days (testing days) was investigated using a behavioral paradigm which includes a first forced ethanol exposure (conditioning ...
The effects of the administration of the kappa agonist dynorphin1-17 and/or the kappa antagonist MR-2266-BS on ethanol preference was investigated using a paradigm by which rats develop alcohol preference. Administration of dynorphin shortly before or afte ...
The stimulation by nicotine of intramural nerves and the role of ATP and vasoactive intestinal peptide (VIP) as inhibitory transmitters were studied in the isolated taenia of the guinea-pig caecum. Nicotine (4-32 microM) caused transient, concentration-dep ...
Experiments to find a biomimetic route for synthesizing morphine are summarized. Systematic investigations on the phenolic oxidative coupling have been revised and evaluated. ...
Analogues of the opioid peptides [D-Phe(3)]morphiceptin (H-Tyr-Pro-D-Phe-Pro-NH2) and endomorphin-2 (H-Tyr-Pro-Phe-Phe-NH2) containing the pseudoproline (Psi Pro) (4R)-thiazolidine-4-carboxylic acid (CyS[Psi (R1,R2) pro]) or (4S)-oxazolidine-4-carboxylic a ...
The objective of this investigation was to evaluate the effect of ancrod, a fibrinogenolytic protease from Malayan pit viper venom, locally delivered through a photopolymerized biodegradable hydrogel in preventing postoperative adhesions. The experimental ...
Using a paradigm by which rats forced to drink a weak ethanol solution (2.5% w/v) (conditioning session) develop ethanol preference in consecutive retention testing days, the effects of the administration of the kappa opioid antagonist MR-2266-BS, prior to ...
