Dresdner Kleinwort Wasserstein has won an advisory role on the first takeover of Russian oil assets by a Chinese company with Sinopec's $3.5bn (€2.8bn) acquisition of Russian assets owned by British Petroleum.

Sinopec has teamed up with Rosneft, the Russian oil giant, to buy assets from the UK oil group's Russian subsidiary TNK-BP in the largest sector deal in the region this year.