Top seeded Jayaram defeated fellow Indian Harsheel Dani 21-18 19-21 21-8 in a hard-fought that lasted 47 minutes.
The two-time Dutch Open winner, Jayaram will face Korea's Lee Hyun Il, seeded third, in the semifinals.
Fourth seed Praneeth too made it to the final four after brushing aside eighth seed Raul Must of Estonia 21-14 21-16 in just 33 minutes to set up a clash against seventh seeded Frenchman Brice Leverdez, who had ended the campaign of second seed H S Prannoy of India.
In women's singles, it was curtains for Ruthvika Shivani Gadde and Tanvi Lad.
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While Ruthvika suffered a 16-21 12-21 loss to fourth seed Linda Zetchiri of Bulgaria, Tanvi fought hard before going down 16-21 21-15 10-21 to third seed Iris Wang of USA.
Among other Indians in fray, top seeds Manu Attri and B Sumeeth Reddy, who have qualified for Rio Olympics, were given a walkover by Canada's Ted (Chin Tai) Chen and Chinese Taipei's Liao Chao Hsiang in the men's doubles event.
The Indian duo will play Indonesia's Andrei Adistia and Canada's Dong Adam (Xingyu).
In another women's doubles match, Jakkampudi Meghana and S Poorvisha Ram suffered a narrow 21-18 16-21 20-22 loss to Hung Yi-Ting and Su Hsiang Ling of Chinese Taipei.
Manu and Ashwini also gave a walkover to fourth seed Nico Ruponen and Amanda Hogstrom of Sweden in the mixed doubles competition.