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Several dimethylsilane tetramines [homologs of spermine with an Si(CH3)2 group in the central carbon chain], a carbon analog of the dimethylsilane tetramines [containing C(CH3)2 instead of Si(CH3)2] and a dimethylsilane hexamine were studied with regard to their cytotoxic activity and their ability to interact with double-stranded DNA. All polyamine analogs(More)
Bis(7-amino-4-azaheptyl)dimethylsilane (AzhepSi) and its bis(ethyl) derivative [bis(7-ethylamino-4-azaheptyl)dimethylsilane] (EtAzhepSi) are the first examples of a new type of aliphatic tetramine with a dimethylsilane group incorporated into the central carbon chain. AzhepSi shares certain properties with the natural polyamines, but in contrast with(More)
Dimethylsilane tetramines are structural analogues of spermine with a (CH3)2 Si-group incorporated into the central carbon chain. They have potential as anticancer drugs. Their cytotoxic effect was considered to rely mainly on their polyamine antagonist property. In order to obtain new ideas about cellular mechanisms, which are potential targets of the(More)
Several members of a new class of structural analogues of the natural polyamines which contain a S1(CH3)(2)- group in the central carbon chain have previously been found to be potent cytostatics to various tumor cell lines. These compounds have been tested with regard to their ability to inhibit the growth of Lewis lung carcinoma grafts in DBA/2 mice. All(More)
N1-Dansylspermine and related sulfonamides of the natural polyamines are very potent blockers of NMDA-type glutamate receptors. They exhibit pharmacological properties which were not predicted from the constituents of the conjugates. Cytotoxicity and calmodulin antagonism of N1-dansylspermine were especially impressive. Calmodulin antagonism implies that(More)
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