Facile synthesis of halo-substituted tetrahydroisoquinolines and tetrahydro-2-benzazepines via N-acetyl-1,2-dihydroisoquinolines
摘要:
DOI:
10.1021/jo01298a038
作为产物:
描述:
3,4-二氯苯甲醛 、 氨基乙醛缩二甲醇 在
氮气 作用下,
以
甲苯 为溶剂,
反应 0.5h,
以to give the title compound as an orange-brown oil (˜36 g, quantitative)的产率得到N-<(3,4-dichlorophenyl)methylene>-2,2-dimethoxyethanamine
Nucleotide derivatives of formula (1) are described: wherein: G is a hydrogen atom or an optionally substituted aliphatic, heteroaliphatic, cycloaliphatic, polycycloaliphatic, aromatic or heteroaromatic group or a non-natural nucleoside as defined herein; G′ is a non-natural necleoside as defined herein; n is zero, or the integer 1 or 2; m is zero or the integer 1 or 2; and the salts, solvates, hydrates and N-oxides thereof. The compounds are P2Y receptor agonists and are of use in the prophylaxis and treatment of diseases and disorders involving abnormal secretory mechanisms such as inadequate functioning of mucociliary clearance mechanisms or abnormal tear secretion or in the treatment of diseases involving inappropriate cellular glucose uptake.
Multisubstrate inhibitors of dopamine .beta.-hydroxylase. 2. Structure-activity relationships at the phenethylamine binding site
作者:Lawrence I. Kruse、Carl Kaiser、Walter E. DeWolf、James S. Frazee、Stephen T. Ross、Joyce Wawro、Merrie Wise、Kathryn E. Flaim、John L. Sawyer
DOI:10.1021/jm00386a008
日期:1987.3
1-Aralkylimidazole-2-thiones have been shown to be potent multisubstrate inhibitors of dopamine beta-hydroxylase (DBH; EC 1.14.17.1). In the present study, a series of 1-benzylimidazole-2-thiones was prepared to explore the effects of substitution in the benzyl ring on the inhibition of DBH. A detailed structure-activity relationship for in vitro activity was discovered and this was shown by a modified Hansch analysis to correlate (r = 0.91) with four key structural features of the benzyl ring: the presence of a hydroxyl at the 4-position, molar refractivity at the 3-, 4-, and 5-positions, inductive effects of the substituents at the 3-, 4-, and 5-positions, and pi-electron density. The affinity (Kis) of eight substituted inhibitors for DBH was shown to correlate (r = 0.75) with the affinity (KD) of comparably substituted tyramines for the ternary DBH-oxygen-tyramine complex. This correlate is used to support the hypothesis that binding of inhibitor to DBH occurs in a fashion that mimics the binding of tyramine substrates. The most potent inhibitors were selected for study in vivo in the spontaneously hypertensive rat model of hypertension. The changes in vascular dopamine and norepinephrine levels that resulted from oral administration of the inhibitors corresponded to the observed reduction in mean arterial blood pressure. A divergence between in vitro potency and in vivo efficacy upon oral dosing was noted and is suggested to result from an in vivo metabolic conjugation of the phenolic group of inhibitor.
Synthesis of novel substituted isoquinolones
作者:Nicolas Briet、Michael H Brookes、Richard J Davenport、Frances C.A Galvin、Philip J Gilbert、Stephen R Mack、Verity Sabin
DOI:10.1016/s0040-4020(02)00573-2
日期:2002.7
A series of novel substituted isoquinolones have been synthesised. This has been achieved by two routes, either Curtius rearrangment of cinnamic acids or via an isoquinoline N-oxide. (C) 2002 Elsevier Science Ltd. All rights reserved.
Facile synthesis of halo-substituted tetrahydroisoquinolines and tetrahydro-2-benzazepines via N-acetyl-1,2-dihydroisoquinolines
作者:Carl D. Perchonock、Ivan Lantos、Joseph A. Finkelstein、Kenneth G. Holden