A series of 3-benzyloxy-1-aza-9-oxafluorenes has been synthesized and biologically evaluated as novel MDR modulators. The concentration dependent inhibition of the efflux pump ABCB1 (P-glycoprotein) has been characterized and is discussed in relation to calculated lipophilicity data. Instead of the molecular lipophilicity the exact positioning of functional groups was found decisive for the biological activities.
Comins, Daniel L.; Stroud, Eric D., Journal of Heterocyclic Chemistry, 1985, vol. 22, p. 1419 - 1420
作者:Comins, Daniel L.、Stroud, Eric D.
DOI:——
日期:——
COMINS, D. L.;STROUD, E. D., J. HETEROCYCL. CHEM., 1985, 22, N 5, 1419-1420
作者:COMINS, D. L.、STROUD, E. D.
DOI:——
日期:——
Dipolar Cycloaddition Route to Diverse Analogues of Cocaine: The 6- and 7-Substituted 3-Phenyltropanes
作者:Alan P. Kozikowski、Gian Luca Araldi、Richard G. Ball
DOI:10.1021/jo961957g
日期:1997.2.1
type I was required. Starting from 3-hydroxy-1-methyl-4-phenylpyridinium iodide, we disclose a pyridinium betaine-based dipolar cycloaddition route to tropenones of type II. In turn, we show how this intermediate can be transformed to type I products either through the copper-catalyzed conjugate addition reaction of Grignardreagents to the enones 7-9 or by the copper(I)-catalyzedcrosscoupling reaction