Pharmachemie B.v.

Martine Kemmer

Dick De Vos

Rudolph Willem

Marcel Gielen

Monique Biesemans

Tin polyaalkanecarboxylates having the formula &lsqb;(R R Sn) O &rsqb; wherein R represents C -C alkyl, branched or straight, substituted or not by one or more hydroxyl groups or halogen atoms, or a phenyl group, substituted or not by one or more hydroxyl groups or halogen atoms, R is carboxylic residue selected from (I), (II), (III) or (IV); and p, q, r, s and t have the following meanings: P&equals;3, q&equals;1, r&equals;1, s&equals;) and t&equals;1, p&equals;2, q&equals;2, r&equals;1, s&equals;0, and t&equals;1, p&equals;2, q&equals;1, r&equals;2, s&equals;1 and t&equals;2, have anti-tumor activity.

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Helmdange, Luxembourg

Martine Kemmer