Ammonia → HCID 53884295, compound

Participants

Reaction Steps

This compound was prepared by general method A, described in more detail in Example 22. 2',3'-Di-O-benzoyl-2-chloro-5'-cyano-5'-deoxy-N-(4-phenylthio-1-piperidinyl)adenosine [prepared from 1-amino-6-phenylthiopiperidine (Knutsen, L. J. S., Lau, J., Sheardown, M. J., Thomsen, C.; Bioorganic and Medicinal Chemistry Letters, 1993, 3, 2661-2666) and 9-(2',3'-di-O-benzoyl-5'-cyano-5'-deoxy-β-D-ribofuranosyl)-2,6-dichloro-9H-purine as described in Example 24] (1.5 g, 2.5 mmol) in methanol (20 ml) was treated with methanolic ammonia (5 ml). The reaction mixture was stirred at ambient temperature for 0.75 h. Ethyl acetate (5 ml) was added to the residue on evaporation to provide 2-chloro-5'-cyano-5'-deoxy-N-(4-phenylthio-1-piperidinyl)adenosine (0.11 g, 46%) as a solid, m.p. 159°-161° C., 1H-NMR (400 MHz, DMSO-d6) δ1.68 (2H, br q, piperidine C--H), 1.98 (2H, m, piperidine C--H), 2.78 (2H, br, piperidine C--H), 3.04 (2H, br d, H-5'a and H-5'b), 4.11 (2H, m, H-4' and H-3'), 4.63 (1H, m, H-2'), 5.54, 5.68 (2H, 2d, 2'-and 3'-OH), 5.88 (1H, d, H-1'), 7.22-7.45 (5H, 3m, Ar--H), 8.38 (1H, s, H-8), 9.49 (1H, s, N--H). HPLC retention time 20.34 min. (gradient elution over 30 min; 25-45% acetonitrile/0.1% ammonium sulfate in water), purity 96% at 250 nm). C16H20ClN7O3. 0.7 H2O. 0.1 EtOAc requires C, 51.4; H, 5.1; N, 18.7. Found C, 51.4; H, 4.9; N, 18.3%.

Provenance & Evidence