Aliphatic propargylamines: potent, selective, irreversible monoamine oxidase B inhibitors
摘要:
A series of aliphatic propargylamine derivatives has been synthesized. Some of them possess highly potent, irreversible, selective, inhibitory activity toward monoamine oxidase B (MAO-B). The potency of the inhibitors is related to chain length and substitution of a hydrogen on the terminal carbon of the aliphatic chain. MAO inhibitory activity as assessed in vitro increased as the aliphatic carbon chain length increased. Substitution of a hydrogen by hydroxyl, carboxyl, or carbethoxyl groups at the aliphatic chain terminal or replacement of the methyl group on the nitrogen atom by an ethyl group considerably reduced the inhibitory activity. Stereospecific effects were observed with the R-(-)-enantiomer being 20-fold more active than the S-(+)-enantiomer. Inhibitors with relatively short carbon chain lengths (i.e. four to six carbons) were found to be more potent than those with longer chains in inhibiting brain MAO-B activity in vivo especially after oral administration. Chronic administration of low doses of the aliphatic propargylamines caused a slight cumulative inhibition of MAO-A activity in the mouse brain. These MAO-B inhibitors appear to be nontoxic, and they do not possess an amphetamine-like moiety in their structure as is the case for deprenyl. We expect that these aliphatic propargylamines may be useful in the treatment in certain neuropsychiatric disorders.
A mild and easy-to-handle protocol to produce propargylamines with a terminal alkyne through sp3 C–H bond activation and C–C coupling of tertiary amines and calcium carbide has been developed.
Hydroboration and iodination of acetylenic and brominated acetylenic amines, give ethylenic amines in which the double bond is demonstrated by the formation of trans-substituted equivalent boranes. Taking advantage of regioselective and stereoselective results, thermodynamic control is assumed. A kinetic study of the evolution of the reaction products confirms this hypothesis.
Stereodynamics of <i>N</i>-Isopropyl-<i>N</i>-methylpropargylamine. Dynamic NMR Studies. Molecular Mechanics Calculations
作者:Jay H. Brown、C. Hackett Bushweller
DOI:10.1021/jo001389b
日期:2001.2.1
inversion-rotation process. Both 13C(1H) and 1H dynamicNMR (DNMR) spectra decoalesce in response to slowing inversion-rotation (delta G++ = 7.7 +/- 0.1 kcal/mol). While aspects of the DNMR spectra suggest the presence of minor conformations, the spectrum at 100 K shows a strong preference for one conformation. The NMR data suggest that the preferred conformation has both the isopropyl methine proton and
[EN] SUBSTITUTED QUINAZOLINE DERIVATIVES AND THEIR USE AS TYROSINE KINASE INHIBITORS<br/>[FR] DERIVES DE QUINAZOLINE SUBSTITUES ET LEUR UTILISATION EN TANT QU'INHIBITEURS DE LA TYROSINE KINASE
申请人:AMERICAN CYANAMID COMPANY
公开号:WO1999009016A1
公开(公告)日:1999-02-25
(EN) This invention provides compounds of formula (1) wherein X is C3-7 cycloalkyl, pyridinyl, pyrimidinyl or phenyl ring optionally substituted as described in claim 1, R1, R3 and R4 are chosen from the groups listed in claim 1. R2 is chosen from various unsaturated acyl groups listed in claim 1, with certain compounds being disclaimed. Use as tyrosine kinase inhibitors for the treatment of cancer and certain kidney diseases such as polycystic kidney disease.(FR) Cette invention concerne des composés de la formule (1) dans laquelle X représente C3-7 cycloalkyle, pyridinyle, pyrimidinyle ou phényle éventuellement substitué et décrit dans la revendication 1, R1, R3 et R4 sont choisis dans les groupes énumérés dans la revendication 1. R2 est choisi parmi plusieurs groupes acyles insaturés énumérés dans la revendication 1, certains composés n'étant pas revendiqués. Ces composés jouent le rôle d'inhibiteur de la la tyrosine kinase pour le traitement du cancer et de certaines maladies des reins telles que la maladie polykystique des reins.
This invention provides compounds of formula 1 having the structure
wherein:
X, R1, R2, R3, R4, Z, X, and n are as defined hereinbefore in the specification, which are useful as antineoplastic agents and in the treatment of certain kidney diseases, such as polycystic kidney disease.