[EN] BIS(HYDROXYMETHYL) PYRROLOPHTHALAZINE HYBRIDS, PREPARATION METHODS AND USES THEREOF<br/>[FR] HYBRIDES DE BIS(HYDROXYMÉTHYL) PYRROLOPHTALAZINE, LEURS PROCÉDÉS DE PRÉPARATION ET LEURS UTILISATIONS
申请人:ACADEMIA SINICA
公开号:WO2019099755A1
公开(公告)日:2019-05-23
Disclosed herein are novel bifunctional compounds and their uses for the treatment and/or prophylaxis of cancers. The bifunctional compound disclosed herein has the structure of formula (I).
Chromophore-Modified Antitumor Anthracenediones: Synthesis, DNA Binding, and Cytotoxic Activity of 1,4-Bis[(aminoalkyl)amino]benzo[g]phthalazine-5,10-diones
作者:Carmelo A. Gandolfi、Gino Beggiolin、Ernesto Menta、Manlio Palumbo、Claudia Sissi、Silvano Spinelli、Francis Johnson
DOI:10.1021/jm00003a015
日期:1995.2
4-bis[(aminoalkyl)amino]-benzo[g]phthalazine-5,10-diones (BPDs) 1 which are related to the antitumor agents ametantrone and mitoxantrone. Derivatives 1 were prepared by chromic acid oxidation of acylated benzo[g]phthalazines 5 followed by acid hydrolysis or by silylation-amination of 5,10-dihydroxybenzo[g]phthalazine-1,4-dione (8). The 1-[(aminoalkyl)amino]-4-amino congeners 2 were isolated in low yields
Compounds of formula I are described, ##STR1## wherein: R.sub.1 and R.sub.2, that can be the same or different, are hydrogen or acyl groups; R.sub.3 and R.sub.4, that can be the same or different, are hydrogen or optionally substituted alkyl groups. The compounds of formula I are prepared by oxydation of the compounds of formula II: ##STR2## wherein the groups R'.sub.1, R'.sub.2, R'.sub.3 and R'.sub.4 have the same meanings as R.sub.1, R.sub.2, R.sub.3 and R.sub.4 or groups convertible to the latter. The compounds of formula I have remarkable antitumor activity.
Structural Identification between Phthalazine-1,4-Diones and N-Aminophthalimides via Vilsmeier Reaction: Nitrogen Cyclization and Tautomerization Study
作者:Cheng-Yen Chung、Ching-Chun Tseng、Sin-Min Li、Shuo-En Tsai、Hui-Yi Lin、Fung Fuh Wong
DOI:10.3390/molecules26102907
日期:——
carry out the 5-exo or 6-endo nitrogen cyclization under the different reaction conditions. Based on the control experimental results, 6-endo thermodynamic hydrohydrazination and kinetical 5-exo cyclization reactions were individually selective formation. Subsequently, Vilsmeier amidination derivatization was successfully developed to probe the structural divergence between N-aminophthalimide 2 and phthalazine
Short, Divergent, and Enantioselective Total Synthesis of Bioactive <i>ent</i>-Pimaranes
作者:Immanuel Plangger、Klaus Wurst、Thomas Magauer
DOI:10.1021/acs.orglett.2c02843
日期:2022.10.7
We present the first total synthesis of eight ent-pimaranes via a short and enantioselective route (11–16 steps). Key features of the divergent synthesis are a Sharpless asymmetric dihydroxylation, a Brønsted acidcatalyzed cationic bicyclization, and a mild Rh-catalyzed arene hydrogenation for rapid access to a late synthetic branching point. From there on, selective functional group manipulations
我们首次通过一条短的对映选择性路线(11-16 步)全合成了八种ent -pimarane。发散合成的主要特征是 Sharpless 不对称二羟基化、Brønsted 酸催化的阳离子双环化和温和的 Rh 催化的芳烃氢化以快速获得后期合成支化点。从那时起,选择性的官能团操作能够合成在 A 环和 C 环中带有不同修饰的ent -pimaranes。