Antitumour imidazotetrazines. Part 39. 1 Synthesis of bis (imidazotetrazine) s with saturated spacer groups

…, SA Jennings, DAF Langnel, RT Wheelhouse…

Index: Arrowsmith, Jill; Jennings, Sharon A.; Langnel, David A.F.; Wheelhouse, Richard T.; Stevens, Malcolm F. G. Journal of the Chemical Society, Perkin Transactions 1, 2000 , # 24 p. 4432 - 4438

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Citation Number: 21

Abstract

Bis (imidazotetrazine) s (16), related in structure to the antitumour agents mitozolomide (1a) and temozolomide (1b), but linked through the N (3)–N (3′) atoms of the imidazo [5, 1-d][1, 2, 3, 5] tetrazine ring-systems, are prepared by interaction of 5-diazoimidazole-4- carboxamide (8) and diisocyanates (15). The presence of the polymethylene linker with/without sulfur and oxygen heteroatoms does not substantially affect the acid stability, ...

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