title: Synthesis and biological evaluation of fragmented derivatives of tetrahydroisoquinolines. 2. Trimetoquinol studies.
abstract: The synthesis of N-(3',4',5'-trimethoxyphenylethyl)-3,4-dihydroxyphenylethylamine (2) and 1-(3,4,5-trimethoxybenzyl)-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline (1) is presented. Comparative pharmacological effects of the optical isomers of 1 and compound 2 are reported in guinea pig atria, rat adipose tissue, guinea pig trachea, and guinea pig aortic strip preparations. In the beta-adrenoreceptor preparations, (-)-1 was shown to be more potent than (+)-1 or 2. Racemic 1 and 2 were shown to have equal alpha-antagonist properties in the inhibition of norepinephrine-induced contractions of guinea pig aorta.
mesh_terms: D000273:Adipose Tissue / Q000378:metabolism; D000317:Adrenergic alpha-Antagonists / Q000138:chemical synthesis / Q000494:pharmacology; D000818:Animals; D001013:Aorta, Thoracic / Q000187:drug effects; D004822:Epididymis / Q000378:metabolism; D005260:Female; D006168:Guinea Pigs; D006325:Heart Atria / Q000187:drug effects; D066298:In Vitro Techniques; D007546:Isoquinolines / Q000138:chemical synthesis*; D050356:Lipid Metabolism; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects; D051381:Rats; D011941:Receptors, Adrenergic; D013237:Stereoisomerism; D013329:Structure-Activity Relationship; D014132:Trachea / Q000187:drug effects; D014213:Tretoquinol / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D000317:Adrenergic alpha-Antagonists; D007546:Isoquinolines; D011941:Receptors, Adrenergic; D014213:Tretoquinol