Synthesis and reactivity of 1-hydroxyspiro[2.5]cyclooct-4-en-3-ones
摘要:
The first 1-hydroxyspiro[2.5]cyclooct-4-en-3-ones were prepared by cyclization of free and masked 1,3-dicarbonyl dia-nions with 1,1-diacetylcyclopropane. 1-Hydroxyspiro[2.5]cyclooct-4-en-3-ones represent precursors of unstable spiro[5.2]cycloocta-4,7-dien-6-ones and reactions with a number of nucleophiles were studied. The reactions are enhanced by dynamic spiro-activation. (C) 2004 Elsevier Ltd. All rights reserved.
Synthesis and reactivity of 1-hydroxyspiro[2.5]cyclooct-4-en-3-ones
摘要:
The first 1-hydroxyspiro[2.5]cyclooct-4-en-3-ones were prepared by cyclization of free and masked 1,3-dicarbonyl dia-nions with 1,1-diacetylcyclopropane. 1-Hydroxyspiro[2.5]cyclooct-4-en-3-ones represent precursors of unstable spiro[5.2]cycloocta-4,7-dien-6-ones and reactions with a number of nucleophiles were studied. The reactions are enhanced by dynamic spiro-activation. (C) 2004 Elsevier Ltd. All rights reserved.
[3+3] Cyclizations of 1,3-Bis(silyl enol ether)s with 1,1-Diacetylcyclopentane and 1,1-Diacetylcyclopropane
作者:Peter Langer、Gopal Bose
DOI:10.1002/anie.200351263
日期:2003.9.5
Synthesis, reactions and structure–activity relationships of 1-hydroxyspiro[2.5]cyclooct-4-en-3-ones: Illudin analogs with in vitro cytotoxic activity
作者:Gopal Bose、Karin Bracht、Patrick J. Bednarski、Michael Lalk、Peter Langer
DOI:10.1016/j.bmc.2006.03.037
日期:2006.7.15
1-Hydroxyspiro [2.5]cyclooet-4-en-3-ones-analogs of natural illudines-were prepared in good yields by cyclization of 1,3-dicarbonyl dianions or 1,3-bis-silyl enol ethers ('masked dianions') with 1,1-diacylcyclopropanes. Several spirocyclopropanes showed a significant antiproliferative activity against human leukemia HL60 cells in vitro. 1-Hydroxyspiro [2.5]cyclooct-4-en-3-ones represent highly reactive precursors of unstable spiro[5.2]cycloocta-4,7-dien-6-ones and reactions with a number of nucleophiles were studied. (c) 2006 Elsevier Ltd. All rights reserved.
[DE] LEITSTRUKTUREN FÜR ZYTOSTATISCHE VERBINDUNGEN AUF BASIS VON SPIROVERBINDUNGEN<br/>[EN] LEAD STRUCTURES FOR CYTOSTATIC COMPOUNDS BASED ON SPIRO COMPOUNDS<br/>[FR] MATRICES DESTINEES A DES COMPOSES CYTOSTATIQUES A BASE DE COMPOSES SPIRO
申请人:UNIV ERNST MORITZ ARNDT
公开号:WO2007051622A1
公开(公告)日:2007-05-10
[EN] The invention relates to lead structures of general formula X for the treatment of tumor diseases. The invention further relates to pharmaceutical compositions containing said compounds as well as the use of said compounds for treating diseases. [FR] L'invention concerne des matrices représentées par la formule générale X, destinées à la thérapie de maladies tumorales. L'invention concerne également des compositions pharmaceutiques contenant ces composés et l'utilisation de ces composés dans le traitement de maladies. [DE] Die vorliegende Erfindung Leitstrukturen der altgemeinen Formel X für die Therapie von Tumorerkrankungen. Die Erfindung betrifft weiterhin pharmazeutische Zusammensetzungen, die diese Verbindungen enthalten und die Verwendung dieser Verbindungen bei der Behandlung von Erkrankungen.
Synthesis and reactivity of 1-hydroxyspiro[2.5]cyclooct-4-en-3-ones
作者:Gopal Bose、Peter Langer
DOI:10.1016/j.tetlet.2004.03.134
日期:2004.5
The first 1-hydroxyspiro[2.5]cyclooct-4-en-3-ones were prepared by cyclization of free and masked 1,3-dicarbonyl dia-nions with 1,1-diacetylcyclopropane. 1-Hydroxyspiro[2.5]cyclooct-4-en-3-ones represent precursors of unstable spiro[5.2]cycloocta-4,7-dien-6-ones and reactions with a number of nucleophiles were studied. The reactions are enhanced by dynamic spiro-activation. (C) 2004 Elsevier Ltd. All rights reserved.