Unprecedented dihydrodipyridopyrazines were easily obtained by hetarynic dimerization of 2-alkylamino-3-halogenopyridines in the presence of the complex base NaNH2-tBuONa. Derivatizations of the new heterocycles are described. The anticancer activity of these compounds is also mentioned. (C) 2002 Elsevier Science Ltd. All rights reserved.
US6127369A
申请人:——
公开号:US6127369A
公开(公告)日:2000-10-03
5,10-dihydrodipyrido[2,3-b:2,3-e]pyrazin and
申请人:Adir et Compagnie
公开号:US06127369A1
公开(公告)日:2000-10-03
A compound selected from those of formula (I): ##STR1## wherein: X represents N, C or CH, Y represents N when X represents C or CH, or Y represents C or CH when X represents N, R.sub.1 represents an optionally substituted alkyl, R.sub.2 and R.sub.3, which may be identical or different, represent Z or W, as defined in the description, their isomers and addition salts thereof with a pharmaceutically-acceptable acid or base, and medicinal products containing the same which are useful in the treatment of cancer.
Aminoalkyl-substituted monomeric and dimeric dihydrodipyridopyrazines have been synthesized and evaluated as antitumor agents. Potent cytotoxic compounds were identified in both series. Biochemical and biophysical studies indicated that all these compounds strongly stabilized the duplex structure of DNA and some of them elicited a selectivity for GC-rich sequences. Sequence recognition by of the dimeric dihydrodipyridopyrazines