title: Nucleosides. CXXXV. Synthesis of some 9-(2-deoxy-2-fluoro-beta-D-arabinofuranosyl)-9H-purines and their biological activities.
abstract: Seven purine nucleosides containing the 2'-deoxy-2'-fluoro-beta-D-arabinofuranosyl moiety were synthesized and tested for their antitumor activity. Direct condensation of 3-O-acetyl-5-O-benzoyl-2-deoxy-2-fluoro-D-arabinofuranosyl bromide (1) with N6-benzoyladenine in CH2Cl2 followed by saponification of the product afforded the adenine nucleoside (I, 2'-F-ara-A). Deamination of I with NaNO2 in HOAc gave the hypoxanthine analogue (II, 2'-F-ara-H). The 6-thiopurine nucleoside (III, 2'-F-ara-6MP) was prepared by condensation of 1 with 6-chloropurine by the mercury procedure followed by thiourea treatment and saponification of the product. Methylation of III gave the 6-SCH3 analogue (IV). Raney Ni desulfurization of III afforded the unsubstituted purine nucleoside (V, 2'-F-ara-P). Condensation of 1 with 2-acetamido-6-chloropurine by the silyl procedure afforded the protected 2-acetamido-6-chloropurine nucleoside which served as the precursor for both the guanine and 6-thioguanine nucleosides (VI, 2'-F-ara-G and VII, 2'-F-ara-TG, respectively). Thus, alkaline hydrolysis of the precursor gave VI. Thiourea treatment prior to alkaline hydrolysis gave VII. The new nucleoside, 2'-F-ara-G (VI) is found to be selectively toxic to human T-cell leukemia CCRF-CEM.
authors.forename: C K
authors.initials: CK
authors.lastname: Chu
authors.forename: J
authors.initials: J
authors.lastname: Matulic-Adamic
authors.forename: J T
authors.initials: JT
authors.lastname: Huang
authors.forename: T C
authors.initials: TC
authors.lastname: Chou
authors.forename: J H
authors.initials: JH
authors.lastname: Burchenal
authors.forename: J J
authors.initials: JJ
authors.lastname: Fox
authors.forename: K A
authors.initials: KA
authors.lastname: Watanabe
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis; D000998:Antiviral Agents / Q000138:chemical synthesis; D001087:Arabinonucleosides / Q000138:chemical synthesis* / Q000494:pharmacology; D055598:Chemical Phenomena; D002621:Chemistry; D006801:Humans; D051379:Mice; D011684:Purine Nucleosides / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D000970:Antineoplastic Agents; D000998:Antiviral Agents; D001087:Arabinonucleosides; D011684:Purine Nucleosides