Complex sentence: Several other chemicals have been found to inhibit telomerase activity and are currently being tested as potential clinical treatment options such as nucleoside analogues, retinoic acid derivatives, quinolone antibiotics, and catechin derivatives.
Split into simpler sentences: Several other chemicals have been found to inhibit telomerase activity and are being tested as potential clinical treatment options. These include nucleoside analogues, retinoic acid derivatives, quinolone antibiotics, and catechin derivatives.