3717-39-3Relevant academic research and scientific papers
Selective synthesis of mono- and di-methylated amines using methanol and sodium azide as C1 and N1 sources
Chakrabarti, Kaushik,Mishra, Anju,Panja, Dibyajyoti,Paul, Bhaskar,Kundu, Sabuj
supporting information, p. 3339 - 3345 (2018/07/29)
A Ru(ii) complex mediated synthesis of various N,N-dimethyl and N-monomethyl amines from organic azides using methanol as a methylating agent is reported. This methodology was successfully applied for a one-pot reaction of bromide derivatives and sodium azide in methanol. Notably, by controlling the reaction time several N-monomethylated and N,N-dimethylated amines were synthesized selectively. The practical applicability of this tandem process was revealed by preparative scale reactions with different organic azides and synthesis of an anti-vertigo drug betahistine. Several kinetic experiments and DFT studies were carried out to understand the mechanism of this transformation.
Substituted 1-phenyl-2-cyclopropylmethylamines with high affinity and selectivity for sigma sites
Ronsisvalle, Giuseppe,Marrazzo, Agostino,Prezzavento, Orazio,Pasquinucci, Lorella,Falcucci, Barbara,Di Toro, Rosanna,Spampinato, Santi
, p. 1503 - 1513 (2007/10/03)
A series of 1-phenyl-2-cyclopropylmethylamines structurally related to (+)- and (-)-MPCB were synthesized and their binding affinities for σ1, σ2, opioid and dopamine (D2) receptors were evaluated. Substitution of the cis-N-normetazocine with different aminic moieties provided compounds with high affinity and selectivity for σ binding sites with respect to opioid and dopamine (D2) receptors. The observed increase in σ2 affinity as compared to the parent (+)-MPCB, supports the idea that the particular stereochemistry of (+)-cis-N-normetazocine affects σ1 selectivity but does not affect σ1 affinity. The (±)-cis isomers of methyl 2-[(1-adamantylamino)methyl]-1-phenylcyclopropane-1-carboxylate (18) displayed a higher affinity and selectivity for the σ1 and σ2 receptor subtypes compared to the (±)-trans 19. Interestingly, the enantiomer (-)-cis 18 displayed a preference for σ1 receptor subtype whereas the (+)-cis 18 did for σ2. These results prompt us to synthesize compounds with modification of nitrogen and carboxyl groups. The compounds obtained showed high affinities and selectivity for σ sites. Moreover, modifications of carboxyl groups provided compounds with the highest affinities in the series. In particular, compound 25 with reverse-type ester showed a K(i) of 0.6 and 4.05nM for σ1 and σ2 binding sites, respectively. Copyright (C) 2000 Elsevier Science Ltd.
