eight immunosuppressed homosexual men with cytomegalovirus viremia -- seven with serious bilateral retinitis , one with colitis in addition to retinitis , and one with pneumonitis only -- were treated with a new acyclovir derivative , 9- ( 1,3-dihydroxy-2-propoxymethyl ) guanine , which has excellent in-vitro activity against cytomegalovirus .
C0001367
acyclovir
C0018321
guanine