CI-39 is an antiviral natural product. CI-39 is an NNRTI (non-nucleoside reverse transcriptase inhibit) antiviral agent with an EC50 of 3.40 µM and an CC50 of >30 µM for wild type HIV-1. CI-39 inhibits HIV-1 RT DNA polymerase and ribonuclease H activitiessup[1].
CI-1020 (PD156707) is an orally active and selective antagonist targeting endothelin (ETA) with an IC50 value of 0.3 nM. CI-1020 blocks intimal hyperplasia in human saphenous veins completely in organ culture. CI 1020 inhibits hypoxic pulmonary hypertension and blocks ET-1-induced pressor responses following oral administration[1][2][3].