Antitumour Benzothiazoles. Part 15: The Synthesis and Physico-Chemical Properties of 2-(4-Aminophenyl)benzothiazole Sulfamate Salt Derivatives
摘要:
A series of sulfamate salt derivatives of the potent and selective 2-(4-aminophenyl)benzothiazole: antitumour agents has been prepared and their evaluation as potential prodrugs for parenteral administration carried out. The salts were sparingly soluble under aqueous conditions (pH 4-9), and degradation to the active free amine was shown to occur under strongly acidic conditions. The salts were found to be markedly less active than their parent amines against sensitive human tumour cell lines in vitro. (C) 2001 Elsevier Science Ltd. All rights reserved.
There are disclosed herein 2-phenylbenzazole compounds having a 3'-substituent and a 4'-NR.sup.2 R.sup.6 substituent in the phenyl group where R.sup.5 and R.sup.6 are each hydrogen or alkyl, or where the $'-NR.sup.5 R.sup.6 substituent is N-acyl (or N-benzoyl). There are also disclosed 2-phenylbenzazole compounds in the form of 4'-N sulphamate salts. Such compounds exhibit significant selective cytotoxic activity in respect of tumor cells and provide potentially useful chemotherapeutic agents for selective treatment of a range of cancers.
(EN) There are disclosed herein 2-phenylbenzazole compounds having a 3'-substituent and a 4'-NR5R6 substituent in the phenyl group where R5 and R6 are each hydrogen or alkyl, or where the 4'-NR5R6 substituent is N-acyl (or N-benzoyl). There are also disclosed 2-phenylbenzazole compounds in the form of 4'-N sulphamate salts. Such compounds exhibit significant selective cytotoxic activity in respect of tumor cells and provide potentially useful chemotherapeutic agents for selective treatment of a range of cancers.(FR) Cette invention concerne des composés 2-phénylbenzazole ayant un substituant en 3' et un substituant NR5R6 en 4' dans le groupe phényle, R5 et R6 étant chacun l'hydrogène ou un alkyle, ou le substituant NR5R6 en 4' étant un N-acyle (ou un N-benzoyle). L'invention se rapporte également à des composés 2-phényl-benzazole sous la forme de sels de sulphamate portant N en 4'. De tels composés présentent une activité cytotoxique sélective significative vis-à-vis des cellules tumorales et permettent de disposer d'agents chimiothérapeutiques potentiellement utiles pour le traitement sélectif d'un certain nombre de cancers.
Antitumour Benzothiazoles. Part 15: The Synthesis and Physico-Chemical Properties of 2-(4-Aminophenyl)benzothiazole Sulfamate Salt Derivatives
作者:Dong-Fang Shi、Tracey D Bradshaw、Mei-Sze Chua、Andrew D Westwell、Malcolm F.G Stevens
DOI:10.1016/s0960-894x(01)00142-1
日期:2001.4
A series of sulfamate salt derivatives of the potent and selective 2-(4-aminophenyl)benzothiazole: antitumour agents has been prepared and their evaluation as potential prodrugs for parenteral administration carried out. The salts were sparingly soluble under aqueous conditions (pH 4-9), and degradation to the active free amine was shown to occur under strongly acidic conditions. The salts were found to be markedly less active than their parent amines against sensitive human tumour cell lines in vitro. (C) 2001 Elsevier Science Ltd. All rights reserved.