Syntheses and antitumor activity of 2-deoxyribofuranosides of 3-deazaguanine
摘要:
Synthesis of 2-deoxyribofuranosides of 3-deazaguanine (IX-XII) has been achieved by a base-catalyzed ring closure of appropriate 2-deoxyribofuranosides of methyl 5(4)-(cyanomethyl)imidazole-4(5)-carboxalate (IV-VII). The separation of isomers and anomers were accomplished by column chromatography and HPLC. The site of glycosidic linkage and the anomeric configurations were established on the basis of C-13 and proton magnetic resonance spectroscopy, as well as UV absorption characteristics. Preliminary results of the antitumor activity of these derivatives, in vitro and in vivo, are described.
Synthesis and antiviral/antitumor activities of certain 3-deazaguanine nucleosides and nucleotides
作者:Ganapathi R. Revankar、Pranab K. Gupta、Alexander D. Adams、N. Kent Dalley、Patricia A. McKernan、P. Dan Cook、Peter G. Canonico、Roland K. Robins
DOI:10.1021/jm00377a002
日期:1984.11
3-deazaguanosine (2) has been developed by reacting methyl5(4)-(cyanomethyl) imidazole-4(5)-carboxylate (4) and 5-(cyanomethyl)-1- (2,3,5-tri-O-benzoyl-beta-D-ribofuranosyl)imidazole-4-carboxylate (6), respectively, with hydrazine. The 3-deazaguanosine 3',5'-cyclic phosphate (13) was prepared from 5-(cyanomethyl)-1-beta-D-ribofuranosyl-imidazole-4-carboxamide 5'-phosphate. Glycosylation of the trimethylsilyl 4
3-DeazaguanineN7- andN9-(2?-Deoxy-?-D-ribofuranosides): Building Blocks for Solid-Phase Synthesis and Incorporation into Oligodeoxyribonucleotides
作者:Frank Seela、Sigrid Lampe
DOI:10.1002/hlca.19910740821
日期:1991.12.11
Oligonucleotides continuing 3-deaza-2′-deoxyguanosine (I) or its N7-regioisomer 2 were prepared by solid-phasesynthesis using P111 chemistry. Protection of 1 or 2 with N,N V-dimethylformamide diethyl acetal followed by 4,4′-dimethoxytritylation afforded imidazo[4,5-c]pyridines 10b and 11b, respectively. The latter were converted into the 3′-phosphonates 10c or lie, respectively; the cyanoethyl N,
连续的3-deaza-2'-脱氧鸟苷(I)或其N 7-区域异构体2的寡核苷酸通过使用P 111化学的固相合成来制备。用N,N -V-二甲基甲酰胺二乙缩醛保护1或2,然后进行4,4'-二甲氧基三苯甲基化,分别得到咪唑并[4,5- c ]吡啶10b和11b。后者转化成3'-膦酸酯10 Ç分别或Ile; 氰乙基N,N-二异丙基亚磷酰胺10d也准备好了。寡核苷酸构件被用于自动化固相合成中。1他自身互补寡聚体13,15,和17中制备,并用蛇毒磷酸二酯酶随后碱性磷酸酶,其特征在于酶水解。CD光谱显示出B-DNA的一般结构。
Syntheses and antitumor activity of 2-deoxyribofuranosides of 3-deazaguanine
作者:A. Mohsin Mian、Tasneem A. Khwaja
DOI:10.1021/jm00356a034
日期:1983.2
Synthesis of 2-deoxyribofuranosides of 3-deazaguanine (IX-XII) has been achieved by a base-catalyzed ring closure of appropriate 2-deoxyribofuranosides of methyl 5(4)-(cyanomethyl)imidazole-4(5)-carboxalate (IV-VII). The separation of isomers and anomers were accomplished by column chromatography and HPLC. The site of glycosidic linkage and the anomeric configurations were established on the basis of C-13 and proton magnetic resonance spectroscopy, as well as UV absorption characteristics. Preliminary results of the antitumor activity of these derivatives, in vitro and in vivo, are described.