Toward the development of chemoprevention agents. Part 1: Design, synthesis, and anti-inflammatory activities of a new class of 2,5-disubstituted-dioxacycloalkanes
A newclass of 2,5-disubstituted-dioxacycloalkanes were designed and synthesized via stereoselective synthetic method as cancer chemoprevention agents. The anti-inflammatory activities of these compounds were tested using the xylene-induced mouse ear edema model. Some of these compounds exhibited comparable or better anti-inflammatory activities than that of aspirin suggesting that they can be further
Lipophilic Permeability Efficiency Reconciles the Opposing Roles of Lipophilicity in Membrane Permeability and Aqueous Solubility
作者:Matthew R. Naylor、Andrew M. Ly、Mason J. Handford、Daniel P. Ramos、Cameron R. Pye、Akihiro Furukawa、Victoria G. Klein、Ryan P. Noland、Quinn Edmondson、Alexandra C. Turmon、William M. Hewitt、Joshua Schwochert、Chad E. Townsend、Colin N. Kelly、Maria-Jesus Blanco、R. Scott Lokey
DOI:10.1021/acs.jmedchem.8b01259
日期:2018.12.27
As drug discovery moves increasingly toward previously "undruggable" targets such as protein-protein interactions, lead compounds are becoming larger and more lipophilic. Although increasing lipophilicity can improve membrane permeability, it can also incur serious liabilities, including poor water solubility, increased toxicity, and faster metabolic clearance. Here we introduce a new efficiency metric, especially relevant to "beyond rule of 5" molecules, that captures, in a simple, unitless value, these opposing effects of lipophilicity on molecular properties. Lipophilic permeability efficiency (LPE) is defined as log D-dec/w(7.4) - m(lipo)cLogP + b(scaffold), where log D-dec/w(7.4) is the experimental decadiene-water distribution coefficient (pH 7.4), cLogP is the calculated octanol-water partition coefficient, and m(lipo) and b(scaffold) are scaling factors to standardize LPE values across different cLogP metrics and scaffolds. Using a variety of peptidic and nonpeptidic macrocycle drugs, we show that LPE provides a functional assessment of the efficiency with which a compound achieves passive membrane permeability at a given lipophilicity.
Toward the development of chemoprevention agents. Part II: Chemo-enzymatic synthesis and anti-inflammatory activities of a new class of 5-amino-2-substitutedphenyl-1,3-dioxacycloalkanes
A new series of optically pure 5-amino-2-substitutedphenyl-1,3-dioxacyclozilkanes were designed and synthesized via a chemo-enzymatic combined method to develop new chemoprevention agents. Twenty-four of newly synthesized compounds significantly inhibited xylene-induced rat ear edema and exhibited comparable or better anti-inflammatory activities than the reference drug aspirin. Treatment of these anti-inflammatory agents did not prolong the tail bleeding time in rat. In addition, 5-amino-2-substitutedphenyl- I 3-dioxacycloalkanes exhibited good membrane permeability based on in vitro Caco-2 cell monolayer permeability assay. Furthermore, some preliminary structure-activity relationships were further analyzed among these compounds. Taken together, 5-amino-2-substitutedphenyl-1,3-dioxacycloalkanes may represent a new class of anti-inflammatory drugs with safer pharmacological profile. (c) 2007 Elsevier Ltd. All rights reserved.