Table 1.

Small molecules targeting G4s in telomeres and hTERT promoter.

Compound	Chemical structure	Main tumor cell type
GTC365		Melanoma [52]
TMPyP4		Mammary cancer, prostatic cancer [55]
Telomestatin		Lymphoma [59]
BRACO19		Uterine carcinoma [60], Glioma [61]
RHPS4		Breast carcinoma [63]
BMPQ-1		Lung cancer, liver cancer, and colon adenocarcinoma [69]
Berberine		Cervical cancer, colorectal cancer [71, 72]