In September 1280, the Mongols occupied Baghras and Darbsak, and took Aleppo on October 20.
After his campaigns in India in 1399, Timur took Aleppo and Damascus in 1400.
They continued south until they were slightly north of Homs, and successfully took Aleppo.
Salih's reign after taking Aleppo only lasted for five years.
Even if we could take Aleppo and Damascus, we've discussed the problems with taking the Bekaa Valley and Lebanon.
From there they moved into Syria in 1259, took Damascus and Aleppo, and reached the shores of the Mediterranean.
Dizbar defeated Qarquya and took Aleppo, but then departed the town to take control over the rest of northern Syria.
By 1175, he had taken control of Hama and Homs, but failed to take Aleppo in a siege.
The Kilab threw their support behind Thimal's nephew Rashid al-Daula Mahmud, who took Aleppo in 1060.
The attempt failed, as al-Ikhshid himself advanced into Syria, took Aleppo and marched to Raqqah, where he met the Caliph.