State news agency SANA also said that army units and other pro-regime forces had seized control of Khan Tuman and neighbouring farms.
Khan Tuman was the scene of fierce clashes between loyalist forces, including fighters of Lebanon's Shiite militia Hezbollah, and Islamist rebels, said the Syrian Observatory for Human Rights.
Signup to our newsletter and follow us on Facebook and Twitter!
Syrian and Russian aircraft carried out at least 40 strikes, it said.
The Britain-based monitoring group said 16 Islamists were killed but it did not have details of casualties on the pro-government sides.
The Syrian military has since mid-October recaptured several areas in the north of the country from Islamist forces, including Al-Qaeda's Syrian branch, Al-Nusra Front.
Regime forces have been buoyed by Russian air strikes since September 30 in support of President Bashar al-Assad's government.