Original sentence: Some media reports speculated that a new group of business magnates controlling significant swathes of Russia's economy, such as Gennady Timchenko, Vladimir Yakunin, Yuriy Kovalchuk, Sergey Chemezov, with close personal ties to Putin, emerged, although Timchenko himself has made it public that his "career of more than 20 years in the oil industry has not been built on favours or political connections"
Edited sentence: A new group of business magnates controlling significant swathes of Russia's economy, such as Gennady Timchenko, Vladimir Yakunin, Yuriy Kovalchuk, Sergey Chemezov, with close personal ties to Putin, emerged