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SAR of a series of 5,6-dihydro-(9H)-pyrazolo[3,4-c]-1,2,4-triazolo[4,3-alpha]pyridines as potent inhibitors of human eosinophil phosphodiesterase.

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The potency and physical properties of a previously reported 7-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine series of human eosinophil phosphodiesterase inhibitors were improved by tying the lactam moiety into a triazolo ring. The resulting

Identification of 2,3-disubstituted pyridines as potent, non-emetic PDE4 inhibitors.

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A series of 2,3-disubstituted pyridines were synthesized as potential non-emetic PDE4 inhibitors. To decrease brain exposure and minimize emesis, we modified the lipophilic moiety of a series of emetic PDE4 inhibitors and found that introduction of a hydroxy group into the pyridine moiety of the

1-(Fluorobenzyl)-4-amino-1H-1,2,3-triazolo[4,5-c]pyridines: synthesis and anticonvulsant activity.

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A series of (fluorobenzyl)triazolo[4,5-c]pyridines was synthesized and tested for activity against maximal electroshock-induced seizures in rodents. The most promising compound, 14 (BW 534U87), which is a carbon-nitrogen isoster of a purine anticonvulsant, has a profile in rodents that suggests 14

5-Hydroxytryptamine (5-HT3) receptor antagonists. 1. Indazole and indolizine-3-carboxylic acid derivatives.

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Metoclopramide (1) is a gastric motility stimulant and a weak dopamine and 5-HT3 receptor antagonist. Conformational restriction of the (diethylamino)ethyl side chain of 1 in the form of the azabicyclic tropane gave 3, a very potent gastric motility stimulant and 5-HT3 receptor antagonist but devoid

Pharmacological profile of AD-5423, a novel antipsychotic with both potent dopamine-D2 and serotonin-S2 antagonist properties.

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The pharmacological properties of AD-5423 [2-(4-ethyl-1-piper-azinyl)-4- (4-fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridine] were studied in biochemical and behavioral tests. In vitro, AD-5423 bound preferentially to dopamine (DA)-D2 (Ki, 14.8 nM; cf. haloperidol, 8.79 nM; and clozapine,

Pyrazine diazohydroxide (NSC-361456). Phase I clinical and pharmacokinetic studies.

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Pyrazine diazohydroxide (NSC-361456) was identified as an active congener of pyridine 2-diazohydroxide with enhanced stability under physiologic conditions. In this phase I study, 35 patients with advanced cancer received 62 courses of PZDH administered intravenously every 3 weeks at doses ranging

Novel 5-hydroxytryptamine (5-HT3) receptor antagonists. I. Synthesis and structure-activity relationships of conformationally restricted fused imidazole derivatives.

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We prepared a novel series of conformationally restricted fused imidazole derivatives 4b, 4c and 4d (possessing 4,5,6,7-tetrahydroimidazo[4,5-c] pyridine and substituted 4,5,6,7-tetrahydro-1H-benzimidazole for 4b, 5,6,7,8-tetrahydroimidazo[1,2-a]pyridine for 4c and

Pharmacokinetic modeling and [¹²³]5-IA-85380 single photon emission computed tomography imaging in baboons: optimization of dosing regimen for ABT-089.

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Neuronal acetylcholine nicotinic receptors (nAChRs) are targets for the development of novel treatments of brain diseases. However, adverse effects (for example, emesis or nausea) associated with high drug maximal exposures or C(max) at nAChRs often hinder the advancement of experimental compounds

Phase I clinical and pharmacokinetic study of cyclophosphamide administered by five-day continuous intravenous infusion.

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A total of 14 patients, 7 male and 7 female, received in all 21 evaluable courses of cyclophosphamide administered by 5-day continuous infusion. Cyclophosphamide doses were escalated from 300 to 400 mg/m2 per day for 5 days and repeated every 21-28 days. The patient population had a median age of 55

Pyridoxine-dependent seizures: a review.

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Pyridoxine-dependent seizure is a rare autosomal recessive disorder that usually presents with neonatal intractable seizures. This syndrome results from an inborn abnormality of the enzyme glutamic acid decarboxylase, which results in reduced pyridazine-dependent synthesis of the inhibitory

Nicotiana glauca (tree tobacco) intoxication--two cases in one family.

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We present two cases of rare human poisoning in one family following ingestion of cooked leaves from the tobacco tree plant, Nicotiana glauca. The toxic principle of N. glauca, anabasine (C10H14N2), is a small pyridine alkaloid, similar in both structure and effects to nicotine, but appears to be

Dose-limiting neurotoxicity in a phase I study of penclomedine (NSC 388720, CRC 88-04), a synthetic alpha-picoline derivative, administered intravenously.

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3,5-Dichloro-2,4-dimethoxy-6-(trichloromethyl)pyridine (penclomedine, NSC 338720, CRC 88-04) is an alpha-picoline derivative with anti-tumour activity in preclinical models. Penclomedine administration by 1-h intravenous infusion on 5 consecutive days was repeated 3 weekly in the absence of

Phase I evaluation and pharmacokinetic study of pyrazine-2-diazohydroxide administered as a single bolus intravenous injection in patients with advanced solid tumors.

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The sodium salt of pyrazine-2-diazohydroxide (PZDH; NSC 361456) was identified as an active congener of the antitumor lead pyridine-2-diazotate with enhanced chemical stability under physiological conditions. In a phase I trial of PZDH administered as a single i.v. bolus injection, 19 patients with

CHF6001 II: a novel phosphodiesterase 4 inhibitor, suitable for topical pulmonary administration--in vivo preclinical pharmacology profile defines a potent anti-inflammatory compound with a wide therapeutic window.

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CHF6001 [(S)-3,5-dichloro-4-(2-(3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl)-2-(3-(cyclopropylmethoxy)-4-(methylsulfonamido)benzoyloxy)ethyl)pyridine 1-oxide] is a novel phosphodiesterase 4 (PDE4) inhibitor designed for use in pulmonary diseases by inhaled administration. Intratracheal

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