BASE-MODIFIED NUCLEOSIDES RELATED TO 2-CHLORO-2'-DEOXYADENOSINE
Autor(en): | KAZIMIERCZUK, Z VILPO, JA SEELA, F |
Stichwörter: | 2-CHLORODEOXYADENOSINE; ADENOSINE-DEAMINASE; CELL-LINES; Chemistry; Chemistry, Multidisciplinary; DEOXYADENOSINE ANALOGS; DEOXYCYTIDINE KINASE; HUMAN-LYMPHOCYTES; LEUKEMIA; SODIUM-SALT GLYCOSYLATION; SUBSTRATE; TOXICITY | Erscheinungsdatum: | 1992 | Herausgeber: | NEW SWISS CHEMICAL SOC | Journal: | HELVETICA CHIMICA ACTA | Volumen: | 75 | Ausgabe: | 7 | Startseite: | 2289 | Seitenende: | 2297 | Zusammenfassung: | Derivatives of 2-chloro-2'-deoxyadenosine (1a) containing secondary 6-NH2 groups (5a-c) or a 8-Br substituent (9) were synthesized. They were tested together with ring-modified congeners containing a pyrrolo[2,3-b]pyridine, pyrrolo[3,2-c]pyridine, or pyrazolo[3,4-d]pyrimidine ring system as inhibitors of various leukemic cell lines. Only the 8-Br derivatives 9 showed inhibitory activity, whereas the base-modified congeners were not active. Compound la was protonated at a pK(a) = 1.4(2'-deoxyadenosine at pK(a) = 3.8). Protonation occurred at N(7) and not at N(1) as observed for dA. |
ISSN: | 0018019X | DOI: | 10.1002/hlca.19920750715 |
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geprüft am 29.05.2024