Process for the preparation of tetraazamacrocycles
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United States of America Patent
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Sep 5, 2000
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app pub date -
Dec 2, 1998
filing date -
Jun 21, 1996
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Abstract
A process for the preparation of tetraazamacrocycles of general formula (I) ##STR1## wherein n, p and q can independently be 0 or 1, comprising the following steps: a): condensation of polyamines with a glyoxal derivative; b): condensation of the resulting compound with an alkylating agent; c): oxidation of the resulting compound with an oxidizing agent, to give a mixture of oxidated products which is submitted to d): hydrolysis in acid aqueous solution, to give the compound of formula (I).
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