23099-72-1Relevant articles and documents
Synthesis of hybrid cyclic peptoids and identification of autophagy enhancer
Rajasekhar, Kolla,Narayanaswamy, Nagarjun,Mishra, Piyush,Suresh,Manjithaya, Ravi,Govindaraju
, p. 25 - 30 (2014/03/21)
Cyclic peptoids are potential candidates for diverse biological activities. However, applications of cyclic peptoids are limited by the synthetic difficulties, conformational flexibility of large cyclic peptoids, and lack of secondary amide in the backbone. Herein, an elegant methodology for the synthesis of small and medium-size cyclic hybrid peptoids is developed. aN-Alkyl and aN-acyl substituents in N-(2-aminoethyl)glycine monomers enforce intra- and intermolecular cyclization to form stable sixand 12-membered cyclic products, respectively. NMR studies show inter- and intramolecular hydrogen bonding in six- and 12-membered cyclic peptoids, respectively. Screening of a cyclic peptoid library resulted in the identification of a potential candidate that enhanced autophagic degradation of cargo in a live cell model. Such upregulation of autophagy using small molecules is a promising approach for elimination of intracellular pathogens and neurodegenerative protein aggregates.
TETRAHYDRO-AZACARBOLINE MCH-1 ANTAGONISTS, METHODS OF MAKING, AND USES THEREOF
-
Page/Page column 24, (2012/06/30)
The present invention relates to tetrahydro-azacarboline derivatives of formula (I): having the substituents as described herein which are melanin-concentrating hormone (MCH-1) receptor antagonists. The present invention also relates to pharmaceutical com
PIPERAZINONE-SUBSTITUTED TETRAHYDRO-CARBOLINE MCH-1 ANTAGONISTS, METHODS OF MAKING, AND USES THEREOF
-
Page/Page column 18, (2012/06/30)
The present invention relates to piperazinone-substituted tetrahydro-carboline derivatives of formula (I): having the substituents as described herein which are melanin-concentrating hormone (MCH-1) receptor antagonists. The present invention also relates
Design, synthesis, and biological evaluation of novel non-piperazine analogues of 1-[2-(diphenylmethoxy)ethyl]- and 1-[2-[bis(4- fluorophenyl)methoxy]ethyl]-4-(3-phenylpropyl)piperazines as dopamine transporter inhibitors
Choi, Sung-Woon,Elmaleh, David R.,Hanson, Robert N.,Fischman, Alan J.
, p. 3647 - 3656 (2007/10/03)
A series of novel diamine, amine-amide, and piperazinone analogues of N- [2-(bisarylmethoxy)-ethyl]-N'-(phenylpropyl)piperazines, GBR 12909 and 12935, were synthesized and evaluated as inhibitors of presynaptic monoamine neurotransmitter transporters. The primary objective of the study was to determine the structural requirements for selectivity of ligand binding and potency for neurotransmitter reuptake inhibition. In general, the target compounds retained transporter affinity; however, structural variations produced significant effects on reuptake inhibition and transporter selectivity. For example, analogues prepared by replacing the piperazine ring in the GBR structure with an N,N'-dimethylpropyldiamine moiety displayed enhanced selectivity for binding and reuptake inhibition at the norepinephrine (NE) transporter site (e.g. 4 and 5). Congeners in which the amide nitrogen atom was attached to the aralkyl moiety of the GBR molecule showed moderate affinity (K(i) = 51-61 nM) and selectivity for the dopamine transporter (DAT) site. In contrast, introduction of a carbonyl group adjacent to either nitrogen atom of the piperazine ring (e.g. 25 and 27) was not well tolerated. From the compounds prepared, analogue 16 was selected for further evaluation. With this congener, locomotor activity induced by cocaine at a dose of 20 mg/kg was attenuated with an-AD50 (dose attenuating cocaine-induced stimulation by 50%) of 60.0 ± 3.6 mg/kg.
