earlier studies ( hamel , e. , and lin , c.m . ( 1981 ) proc . natl . acad . sci . u.s.a. 78,3368-3372 ) were extended to three additional sets of analogs : the di- and triphosphate derivatives of 9-beta-d-arabinofuranosylguanine ( aragdp and aragtp ) and acycloguanosine ( 9- ( 2-hydroxyethoxymethyl ) guanine ) ( acyclogdp and acyclogtp ) , as well as the periodate-oxidized and borohydride-reduced derivatives of gdp and gtp ( ox-redgdp and ox-redgtp ) .
C0001367
acycloguanosine
C0018321
guanine