Synthesis of cystodamine, a pentacyclic aza-aromatic alkaloid
摘要:
A pentacyclic aza-aromatic alkaloid, cystodamine (6), and its isomer (11) were synthesized from 7-(or 6-)bromo-4-chloro-5,8-quinolinedione (1, 8) and o-nitrocinnamaldehyde dimethylhydrazone (2) using hetero Diels-Alder reaction. (C) 1997 Elsevier Science Ltd.
Synthesis of cystodamine, a pentacyclic aza-aromatic alkaloid
摘要:
A pentacyclic aza-aromatic alkaloid, cystodamine (6), and its isomer (11) were synthesized from 7-(or 6-)bromo-4-chloro-5,8-quinolinedione (1, 8) and o-nitrocinnamaldehyde dimethylhydrazone (2) using hetero Diels-Alder reaction. (C) 1997 Elsevier Science Ltd.
1
Compounds having formula (I) wherein R
3
, R
4
, R
7
, and R
8
are independently selected from the group consisting of hydrogen, lower alkyl, halogen, amine, mono(lower)alkylamine, di(lower)alkylamine, phenyl, or substituted phenyl possess antitumor activity and are new with the exception of the compound in which R
3
, R
4
, R
7
, R
8
are all hydrogen and the compound in which R
3
and R
7
are hydrogen, R
4
chlorine, and R
8
is a 2-nitrophenyl group.
Cytotoxic compounds: derivatives of the pyrido [2,3,4-kl]acridine ring system
申请人:Universidad Complutense de madrid
公开号:US20020128281A1
公开(公告)日:2002-09-12
Compounds of formula (I), wherein X is selected from the group consisting of O, and NR
3
, where R
3
represents a lower alkyl group; Y is selected from the group consisting of CH and N; R
1
and R
2
are independently selected from the group consisting of NH
2
, NHR
4
and NR
5
2
, where R
4
and R
5
each represent a lower alkyl group, or R
1
and R
2
together represent a cycle selected from (a), (b) and (c), wherein R
6
, R
7
and R
8
are independently selected from the group consisting of hydrogen atoms, lower alkyl groups, hydroxy groups and lower alkoxy groups; and Z is selected from the group consisting of O.
Synthesis and biological evaluation of new 1,5-diazaanthraquinones with cytotoxic activity
作者:Sonia Manzanaro、María Jesús Vicent、María Jesús Martín、Nélida Salvador-Tormo、José María Pérez、María del Mar Blanco、Carmen Avendaño、José Carlos Menéndez、Jesús Ángel de la Fuente
DOI:10.1016/j.bmc.2004.09.021
日期:2004.12
series of 1,5-diazaanthraquinone derivatives was synthesized and their in vitro cytotoxic activities were evaluated against several human cancer cell lines. The 1,5-diazaanthraquinone chromophore has been synthesized either on the basis of hetero Diels-Alder reactions involving different quinoline-5,8-diones and alpha,beta,-unsaturated aldehyde N,N-dimethylhydrazones or by thertmolysis of different arylaminotnethylene Meldrntm's acid derivatives. Some of these compounds showed cytotoxic activity comparable to that of mitoxantrone against most of the cell lines tested. Compounds 20, 30, 31 and 37 were 4-54 times more potent that mitoxantrone against A549, H 116, PSN 1 and T98G cancer cell lines but, interestingly, they were 3-16 times less potent against the human breast carcinoma SKBR3. Some structure-activity relationships are described, the most significant one being the increase in cytotoxicity resulting from the introduction of a halogen atom at the C-4 position. (C) 2004 Elsevier Ltd. All rights reserved.
A C-Ring Regioisomer of the Marine Alkaloid Meridine Exhibits Selective In Vitro Cytotoxicity for Solid Tumours
作者:Jesús Ángel de la Fuente、M Jesús Martı́n、M del Mar Blanco、Eva Pascual-Alfonso、Carmen Avendaño、J. Carlos Menéndez
DOI:10.1016/s0968-0896(01)00078-5
日期:2001.7
9-Hydroxybenzo[b]pyrido[4,3,2-de](1,10)-phenantrolin-8-one (1), a regioisomer of the marine alkaloid meridine, was synthesized from 5,8-dimethoxy-6-nitro-4(1H)-quinolinone in eight steps and 23% overall yield. A shorter route was also investigated, based on the hetero Diels-Alder reaction between o-nitrocinnamaldehyde dimethylhydrazone and 4-halogen-6-bromo-5,8-quinolinequinones followed by reductive cyclization onto the C-5 carbonyl of the quinone. Compound 1 showed a remarkable in vitro cytotoxicity, with a pattern of selectivity towards solid rumours that is not found in the reference alkaloid, the activity against the human lung carcinoma (A-549) being particularly noteworthy. The activities of meridine and compound 1 as inhibitors of topoisomerase II were also significantly different. (C) 2001 Elsevier Science Ltd. All rights reserved.
CYTOTOXIC COMPOUNDS: DERIVATIVES OF THE PYRIDO 2,3,4-$i(kl)] ACRIDINE RING SYSTEM