2-chloroadenosine

2-Chloroadenosine (CADO) is a metabolically stable analog of adenosine that binds to adenosine A1, A2A, and A3 receptors( Ki:300, 80, and 1,900 nM, respectively)

2-Chloroadenosine 5-triphosphate (2-chloro ATP), an analog of ATP and adenine nucleotide, functions as an antagonist of the purinergic P2Y1 receptor, inhibiting ADP-induced intracellular calcium mobilization in Jurkat cells with a Ki value of 2.3 µM. Additionally, 2-chloro ATP acts as an agonist of purinergic P2X receptors, demonstrated by inducing inward currents in HEK293 cells expressing either human bladder smooth muscle or rat PC12 receptor forms, with EC50 values of 0.5 and 2.5 µM, respectively. It also triggers relaxation in precontracted isolated guinea pig taenia caeci strips in a concentration-dependent fashion. Furthermore, 2-chloro ATP has been employed in research to investigate the substrate specificity of cyclic nucleotide-dependent protein kinases, including protein kinase A (PKA) and PKG.

2-Chloroadenosine-5'-O-diphosphate, a purine nucleotide adenosine 5'diphosphate (ADP) derivative, demonstrates multiple biological activities. It promotes aggregation and inhibits cyclic AMP (cAMP) production, triggered by prostaglandin E2 (PGE2), in a concentration-dependent manner within isolated human platelet-rich plasma. Additionally, this compound facilitates the relaxation of precontracted isolated guinea pig taenia coli strips (pD2 = 6.74) and reduces arterial blood pressure in rats. Moreover, 2-Chloroadenosine-5'-O-diphosphate significantly inhibits the ATPase activity of mortalin, a member of the heat shock protein 70 (Hsp70) family, with an apparent Ki of 45.05 µM for the human enzyme.

Fluoro-nucleoside; Halo-nucleoside

2-Chloro-ADP (2-Chloroadenosine 5′-diphosphate) is a derivative of Adenosine 5'-diphosphate (ADP) that induces platelet aggregation and inhibits stimulated adenylate cyclase. Additionally, 2-Chloro-ADP can inhibit the nucleotide-binding domain (NBD) of Mortalin with a Ki value of 45.05 μM.

Antibiotic AT 265 is a novel chlorosulfonyl nucleoside antibiotic active against certain Gram-positive bacteria.