Second basic pKa: An overlooked parameter in predicting phospholipidosis-inducing potential of diamines
摘要:
In this paper, we present the phospholipidosis-inducing potential (PLIP) of forty fragment-sized diamines derived from N-benzyl-4-(methylamino)piperidine and discuss the relationship between their PLIP and the physicochemical properties. Our results demonstrate that the previously reported methods are not suitable for predicting the PLIP of fragment-sized diamines; the second basic pKa can distinguish PLIP-positive diamines from PLIP-negative diamines more accurately than ClogP or most basic pKa. To the best of our knowledge, this is the first report describing the relationship between PLIP and second basic pKa.
β-Aminocyclopropanols were transformed, in a domino process catalyzed by Pd(II) salts, into the corresponding 2,3-dihydro-1H-pyridin-4-ones. Conversely the use of a Pd(0) derivative, Pd(dba)2, afforded the corresponding tetrahydropyrid-4-ones. The saturated derivatives were also obtained, in better yields, using Pd(II) and Cu(OAc)2 as stoichiometric oxidant.
Cui, Li; Peng, Yu; Zhang, Liming, Journal of the American Chemical Society, 2009, vol. 131, p. 8394 - 8395
作者:Cui, Li、Peng, Yu、Zhang, Liming
DOI:——
日期:——
Rearrangement of isoxazoline-5-spiro derivatives. 2. Synthesis and rearrangement of tetrahydroisoxazole-5-spirocyclopropanes. Preparation of precursors of quinolizine, isoquinoline, and indole alkaloids
作者:Alberto Brandi、Sandro Garro、Antonio Guarna、Andrea Goti、Franca Cordero、Francesco De Sarlo
DOI:10.1021/jo00246a008
日期:1988.5
Synthesis of substituted 2-phenyl-4-piperidinones from styryl ?-dimethylaminoethyl ketones and their steric structure
作者:M. Yu. Dyakov、T. D. Sokolova、A. V. Peretokin、A. S. Moskovkin、B. V. Unkovskii
DOI:10.1007/bf00476754
日期:1991.2
Synthesis and spatial structure of methyl substituted 2-phenylpiperidine-4-spiro-5?-imidazolidine-2?,4?-diones
作者:B. V. Unkovskii、M. Yu. D'yakov、G. V. Cherkaev、T. D. Sokolova