Design, synthesis, nuclear localization, and biological activity of a fluorescent duocarmycin analog, HxTfA
作者:Konstantinos Kiakos、Bernhard Englinger、Stephanie K. Yanow、Debora Wernitznig、Michael A. Jakupec、Walter Berger、Bernhard K. Keppler、John A. Hartley、Moses Lee、Pravin C. Patil
DOI:10.1016/j.bmcl.2018.03.016
日期:2018.5
cells and Plasmodium falciparum. Confocal microscopy studies showed for the first time that HxTfA, and by inference TfA, entered A549 cells and localized in the nucleus to exert its biologicalactivity. At biologically relevant concentrations, HxTfA elicits DNA damage response as evidenced by a marked increase in the levels of γH2AX observed by confocal microscopy and immunoblotting studies, and ultimately
Unexpected Syntheses of seco-Cyclopropyltetrahydroquinolines >From a Radical 5-Exo-Trig Cyclization Reaction: Analogs of CC-1065 and the Duocarmycins
作者:Hari Pati、Lori Forrest、Heather Townes、Brian Lingerfelt、LuAnne McNulty、Moses Lee
DOI:10.3390/90300125
日期:——
alkylation pharmacophore of CC-1065 and the duocarmycins, can be prepared through a 5-exo-trig radical cyclization of a free radical and a 3-chloro-2-allylic moiety. This manuscript reports an unexpected discovery that, depending on the structure and stability of the free radical, the cyclization process leads to the production of an appreciable amount of seco- cyclopropyltetrahydroquinolines 7a-d
A versatile synthesis of “tafuramycin A”: a potent anticancer and parasite attenuating agent
作者:Ibrahim M. El-Deeb、Faith J. Rose、Peter C. Healy、Mark von Itzstein
DOI:10.1039/c4ob00842a
日期:——
An improved and versatile synthesis of tafuramycin A, a potent anticancer and parasite-attenuating agent, is reported.
报道了一种改进和多才多艺的合成方法,用于合成具有强大的抗癌和减弱寄生虫作用的塔富拉霉素A。
Controlling the radical 5-exo-trig cyclization, and selective synthesis of seco-iso-cyclopropylfurano[e]indoline (seco-iso-CFI) and seco-cyclopropylthiophene[e]indoline (seco-CTI) DNA alkylating subunit of the duocarmycins
作者:Pravin Patil、Karalyne Cousins、Mallory Smith、Sarah Wieskamp、Maddi Ferrara、Chrystal D. Bruce、Moses Lee
DOI:10.1016/j.tetlet.2013.06.116
日期:2013.8
The free radical cyclization of benzofuran bromo-allylic chloride 6 in toluene produced an unpredicted mixture of 6-benzyloxy-N-t-Boc-3-(chloromethyl)furano[e]indoline (1) and 7-benzyloxy-N-Boc-3-(chloromethyl)furano[f]quinoline (2). DFT calculations indicated that the indoline radical (6B), formed from 5-exo-trig closure of intermediate 6A, was less polar than the corresponding quinoline radical (6C). Based on this result, we report herein that cyclization of chlorides 6-8 in a polar aromatic solvent consistently and exclusively produced the indoline product in good yield (74-83%). (C) 2013 Elsevier Ltd. All rights reserved.
Novel furano analogues of duocarmycin C1 and C2: design, synthesis, and biological evaluation of seco-iso-Cyclopropylfurano[2,3-e]indoline (seco-iso-CFI) and seco-Cyclopropyltetrahydrofurano[2,3-f]quinoline (seco-CFQ) analogues
作者:Tiffany T. Howard、Brian M. Lingerfelt、Bethany L. Purnell、Adrienne E. Scott、Carly A. Price、Heather M. Townes、LuAnne McNulty、Heather L. Handl、Kaitlin Summerville、Stephen J. Hudson、J.Phillip Bowen、Konstantinos Kiakos、John A. Hartley、Moses Lee
DOI:10.1016/s0968-0896(02)00157-8
日期:2002.9
compounds exhibited a high level of activity against selected solid tumors. At a concentration of 0.0084 microM (based on the IC(50) of compound 17 (seco-CBI-TMI) against the growth L1210 cells), while compounds 4 and 17 were toxic against murine bone marrow cells as judged by a colony forming study of freshly isolated murine progenitor hematopoeitic cells, compound 5, a seco-CFQ compound, was significantly