6-ether/thioether-purines as topoisomerase ii catalytic...

C - Chemistry – Metallurgy – 07 – D

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C07D 473/18 (2006.01) A61K 31/52 (2006.01) A61K 31/5377 (2006.01) A61K 31/7076 (2006.01) A61K 45/06 (2006.01) A61P 35/00 (2006.01) A61P 43/00 (2006.01) C07D 473/00 (2006.01) C07D 473/24 (2006.01)

Patent

CA 2596422

The present invention relates to certain purines of the following formulae, which act as topoisomerase II catalytic inhibitors: wherein: J is independently: -H or -NRN1RN2; X is independently:-O-, or -S-; Q is independently: a covalent bond, C1-7alkylene, C2-7alkenylene, C2-7alkynylene, C3-7cycloalkylene, C3-7cycloalkenylene, or C3-7cycloalkynylene; T is independently: a group A1 or a group A2; A1 is independently: C6-14carboaryl, C5-14heteroaryl, C3-12carbocyclic, or C3-12heterocyclic; and is independently unsubstituted or substituted; A2 is independently: -H, -CN, -OH, or -O(C=O)-C1- 7alkyl; RN is independently -H or a nitrogen ring substituent; R8 is independently -H or a ring substituent; either: each of RN1 and RN2 is independently -H or a nitrogen substituent; or: RN1 and RN2 taken together with the nitrogen atom to which they are attached form a ring having from 3 to 7 ring atoms; and pharmaceutically acceptable salts, solvates, amides, esters, ethers, N-oxides, chemically protected forms, and prodrugs thereof. These compounds are useful in combination with topoisomerase II poisons, such as anthracyclines and epipodophyllotoxins, in the treatment of proliferative conditions (e.g., cancer). These compounds are also useful in the treatment of tissue damage associated with extravasation of a topoisomerase II poison, such as an anthracycline or an epipodophyllotoxin.

L'invention concerne certaines purines présentant les formules I et II. Ces purines agissent en tant qu'inhibiteurs catalytiques de topoisomérase II. Dans ces formules, J désigne indépendamment: H or NRN1RN2; X désigne indépendamment:O ou S; Q désigne indépendamment: une liaison covalente, alkylène C1-7, alcénylène C2-7, alkynylène C2-7, cycloalkylène C3-7, cycloalcénylène C3-7, ou cycloalkynylène C3-7; T désigne indépendamment : un groupe A1 ou un groupe A2; A1 désignant indépendamment: carboaryle C6-14, hétéroaryle C5-14, C3-12 carboxylique ou C3-12 hétérocyclique; et étant indépendamment non substitué ou substitué; A2 désignant: H, -CN, -OH, ou -O(C=O)-alkyle C1-7; RN désigne H ou un substituant d'anneau d'azote; R8 désigne indépendamment H ou un substituant d'anneau; soit: chaque élément parmi RN1 et RN2 désigne indépendamment H ou un substituant d'azote; ou: RN1 et RN2, pris ensemble avec l'atome d'azote auquel ils sont fixés forment un anneau présentant trois à sept atomes. L'invention concerne également des sels pharmaceutiquement acceptables, ainsi que des solvates, des amides, des esters, des éthers, des N-oxydes, des formes chimiquement protégées et des promédicaments des purines susmentionnées. Ces composés sont utiles combinés à des poisons de topoisomérase II, notamment les anthracyclines et les épipodophyllotoxines, dans le traitement de troubles prolifératifs (par exemple le cancer). Ces composés sont également utiles pour traiter une lésion tissulaire associée à une extravasation d'un poison de topoisomérase II, notamment une anthracycline ou une épipodophyllotoxine.

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