Computationally forecasting the effect of dibenzylammonium substituents on pseudorotaxane formation with dibenzo[24]crown-8
摘要:
The ability to predict the relative stabilities of analogous pseudorotaxanes is essential for the synthetic chemist yet simplified computational forecasting approaches remain scarce. Consequently, ten [2]pseudorotaxanes have been assembled (from a series of para-substituted dibenzylammonium ions and dibenzo[24]crown-8) and their experimentally-determined stabilities correlated with two computational parameters closely related to complexation energy. The strongest relationship was obtained from density functional theory calculation of binding energy (R-2 = 0.92) while determination of the maximum surface electrostatic potential on the dibenzylammonium ions (a proxy indicator of complex stability) afforded comparable results (R-2 = 0.88) with great reduction in computational expense. (C) 2015 Elsevier Ltd. All rights reserved.
Reduction of hydrobenzamides: a strategy for synthesizing benzylamines
作者:Andrés Gonzalez-Oñate、Rodolfo Quevedo
DOI:10.1007/s12039-024-02259-5
日期:——
of aromatic aldehydes was studied in this work; aqueous ammonia was used as a nitrogen source. The results showed that aromatic aldehydes’ reaction with aqueous ammonia producedcompounds known as hydrobenzamides (N,N´-(phenylmethylene)bis(1-phenylmethanimines), having good yield. The reaction of hydrobenzamides with sodium borohydride reduced both imine and aminal carbons and produced a primary and
Okamoto, Yoshihisa; Kinoshita, Toshio, Chemical and pharmaceutical bulletin, 1981, vol. 29, # 4, p. 1165 - 1169
作者:Okamoto, Yoshihisa、Kinoshita, Toshio
DOI:——
日期:——
Synthesis and evaluation of oryzalin analogs against Toxoplasma gondii
作者:Molla M. Endeshaw、Catherine Li、Jessica de Leon、Ni Yao、Kirk Latibeaudiere、Kokku Premalatha、Naomi Morrissette、Karl A. Werbovetz
DOI:10.1016/j.bmcl.2010.07.003
日期:2010.9
The synthesis and evaluation of 20 dinitroanilines and related compounds against the obligate intracellular parasite Toxoplasma gondii is reported. Using in vitro cultures of parasites in human fibroblasts, we determined that most of these compounds selectively disrupted Toxoplasma microtubules, and several displayed sub-micromolar potency against the parasite. The most potent compound was N(1),N(1)-dipropyl-2,6-dinitro-4-(trifluoromethyl)-1,3-benzenediamine (18b), which displayed an IC(50) value of 36 nM against intracellular T. gondii. Based on these data and another recent report [Ma, C.; Tran, J.; Gu, F.; Ochoa, R.; Li, C.; Sept, D.; Werbovetz, K.; Morrissette, N. Antimicrob. Agents Chemother. 2010, 54, 1453], an antimitotic structure-activity relationship for dinitroanilines versus Toxoplasma is presented. (C) 2010 Elsevier Ltd. All rights reserved.
OKAMOTO YOSHIHISA; KINOSHITA TOSHIO, CHEM. AND PHARM. BULL., 1981, 29, NO 4, 1165-1169