Gs. Bisacchi et al., BMS-200475, A NOVEL CARBOCYCLIC 2'-DEOXYGUANOSINE ANALOG WITH POTENT AND SELECTIVE ANTI-HEPATITIS-B VIRUS ACTIVITY IN-VITRO, Bioorganic & medicinal chemistry letters, 7(2), 1997, pp. 127-132
BMS-200475, a novel carbocyclic analog of 2'-deoxyguanosine, is a pote
nt inhibitor of hepatitis B virus in vitro (ED(50)=3 nM) with relative
ly low cytotoxicity (CC50=21-120 mu M). A practical 10-step asymmetric
synthesis was developed affording BMS-200475 in 18% overall chemical
yield and >99% optical purity. The enantiomer of EMS-200475 as well as
the adenine, thymine, and iodouracil analogs are much less active. (C
) 1997, Elsevier Science Ltd.