76
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Tam SYK, Hwang JS, De Las Heras FG, Klein RS, Fox JJ. Nucleosides CV. Synthesis of the 8-((β-D-ribofuranosyl)pyrazolo[1,5-a]-1,3,5-triazine isosteres of adenosine and inosine. J Heterocycl Chem 1976. [DOI: 10.1002/jhet.5570130631] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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77
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Otter BA, Falco EA, Fox JJ. Nucleosides. 101. Conformationally restricted analogues of pyrimidine nucleosides. 1. Synthesis of 6,5'(S)- and 6,5'(R)-cyclouridine. J Org Chem 1976; 41:3133-7. [PMID: 966105 DOI: 10.1021/jo00881a014] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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78
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79
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Chu CK, Wempen I, Watanabe KA, Fox JJ. Nucleosides. 100. General synthesis of pyrimidine C-5 cucleosides related to pseudouridine. Synthesis of 5-(beta-D-ribofuranosyl) isocytosine (pseudoisocytidine),5-(beta-D-ribofuranosyl)-2-thiouracil(2-thiopseudouridine) and 5-(beta-D-ribofuranosyl)uracil(pseudouridine). J Org Chem 1976; 41:2793-7. [PMID: 978292 DOI: 10.1021/jo00879a002] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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80
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Reichman U, Chu CK, Wempen I, Watanabe KA, Fox JJ. Nucleosides CIII. Anhydropyrimidine-C-nueleosides. Synthesis of 4,2′-anhydro-5-(β-D-arabinofuranosyl)- and 5-(β-D-arabinofuranosyl)pyrimidine C-nucleosides. J Heterocycl Chem 1976. [DOI: 10.1002/jhet.5570130454] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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81
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Reichman U, Hollenberg DH, Chu CK, Watanabe KA, Fox JJ. Nucleosides. 98. Direct introduction of an acetamido group into the sugar moiety of nucleoside epoxides. J Org Chem 1976; 41:2042-3. [PMID: 1262998 DOI: 10.1021/jo00873a039] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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82
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Burchenal JH, Ciovacco K, Kalaher K, O'Toole T, Kiefner R, Dowling MD, Chu CK, Watanabe KA, Wempen I, Fox JJ. Antileukemic effects of pseudoisocytidine, a new synthetic pyrimidine C-nucleoside. Cancer Res 1976; 36:1520-3. [PMID: 1260769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Pseudoisocytidine, a new synthetic pyrimidine C-nucleoside, which might be considered a more stable analog of 5-azacytidine, is active in vitro and in vivo, i.p. and p.o., against various 1-beta-D-arabinofuranosylcytosine-resistant lines of mouse leukemia. This antileukemic activity is blocked by cytidine but not by deoxycytidine or thymidine.
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83
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De Las Heras FG, Tam SY, Klein RS, Fox JJ. Nucleosides. XCIV. Synthesis of some C nucleosides by 1,3-dipolar cycloadditions to 3-(ribofuranosyl) propiolates. J Org Chem 1976; 41:84-90. [PMID: 1244461 DOI: 10.1021/jo00863a018] [Citation(s) in RCA: 43] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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84
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Fox JJ, Otter BA. Nucleosides. XCI. Some chemical properties of the antileukemic agent 2,2'-anhydro-1-beta-D-arabinofuranosyl-5-fluorocytosine. Ann N Y Acad Sci 1975; 255:59-70. [PMID: 1059375 DOI: 10.1111/j.1749-6632.1975.tb29213.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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85
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Burchenal JH, Currie VE, Dowling MD, Fox JJ, Krakoff IH. Experimental and clinical studies on nucleoside analogs as antitumor agents. Ann N Y Acad Sci 1975; 255:202-12. [PMID: 1059355 DOI: 10.1111/j.1749-6632.1975.tb29225.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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86
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Coutsogeorgopoulos C, Bloch A, Watanabe KA, Fox JJ. Inhibitors of protein synthesis. 4. Studies on the structure-activity relationship of gougerotin and some of its analogs. J Med Chem 1975; 18:771-6. [PMID: 1099202 DOI: 10.1021/jm00242a001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Seventeen structural analogs of gougerotin have been compared with the parent compound as inhibitors of the growh of E. coli B and as inhibitors of N-acetylphenylalanylpuromycin formation. The analogs comprise compounds with (1) an intact sarcosyl-D-seryl moiety and modifications at various positions of the carbohydrate moiety, (2) compounds which lack the peptidyl residue, and (3) compounds in which the sarcosyl-D-seryl moiety has been replaced by other aminoacyl or peptidyl moieties and in which various sites in the carbohydrate moiety have been modified in addition. These comparisons revealed that (1) the 3'-hydroxyl group makes a strong contribution to inhibitory activity, (2) the introduction of a double bond between the 2' and 3' positions of the carbohydrate moiety causes a marked decrease in activity; however, if in addition the sarcosyl-D-seryl moiety is replaced by the epsilon-N-methyl-beta-L-arginyl side chain, full activity is restored, (3) there is a marked degree of stereospecificity around the alpha carbon of the seryl moiety (replacement of the sarcosyl-D-seryl residue with the sarcosyl-L-seryl residue results in greatly reduced activity), and (4) replacement of the carboxamide group at position 5' with a hydroxymethyl function resulsts in reduced activity which is further decreased by alterations in the sarcosyl-D-seryl moiety. These alterations include (a) replacement of the D-seryl residue of the sarcosyl-D-seryl moiety by the D-alanyl or the D-phenylalanyl residues and (b) replacement of the whole sarcosyl-D-seryl side chain by the D-seryl, D-alanyl, D-phenylalanyl, p-methoxy-D-phenylalanyl, or p-methoxy-L-phenylalanyl moieties; the replacement of the sarcosyl-D-seryl side chain with the various aminoacyl residues did not lead to acceptor (puromycin-like) activity with N-Ac-Phe-tRNA as the donor.
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87
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Hollenberg DH, Watanabe KA, Fox JJ. Acyloxy neighboring-group participation in the acid-catalyzed cleavage of methyl 2,3-anhydro-beta-D-ribofuranoside. Carbohydr Res 1975; 42:241-9. [PMID: 166757 DOI: 10.1016/s0008-6215(00)84266-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The reaction of methyl 2,3-anhydro-beta-D-ribofuranoside with hydrogen bromide in an acetic acid-acetic anhydride solution leads to the formation of methyl 2,3-di-O-acetyl-5-bromo-5-deoxy-alpha,beta-D-xylofuranoside. Similar treatment of methyl 2,3-anhydro-5-O-benzoyl-beta-D-robofuranoside provided methyl 2-O-acetyl-3-O-benzoyl-5-bromo-5-deoxy-alpha,beta-D-xylofuranosides. The position of halogen substitution was ascertained by hydrogenolysis to the resultant 5-deoxy sugars, which were characterized by their n.m.r. spectra. Confirmation of the structural assignment for methyl 2-O-acetyl-3-O-benzoyl-5-deoxy-alpha,beta-D-xylofuranoside was obtained by synthesis from 1,2-O-isopropylidene-alpha-D-xylofuranose. The formation of the 5-bromo derivatives under the reported conditions probably occurred through the intermediacy of the 3,5-acyloxonium ions. Similar conversions were observed when the starting compound was treated with hydrogen chloride, acetyl bromide, or acetyl chloride in acetic acid-acetic anhydride solutions.
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88
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Reichman U, Watanabe KA, Fox JJ. A practical synthesis of 2-deoxy-2-fluoro-D-arabinofuranose derivatives. Carbohydr Res 1975; 42:233-40. [PMID: 1139559 DOI: 10.1016/s0008-6215(00)84265-2] [Citation(s) in RCA: 75] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A seven-step synthesis of 1,3-di-O-acetyl-5-O-benzoyl-2-deoxy-2-fluoro-D-arabinofuranose, a versatile intermediate in the synthesis of chemotherapeutically important nucleosides, was achieved from 1,2:5,6-di-O-isopropylidene-3-O-tosyl-alpha-D-allofuranose. The crucial steps were the fluorination by use of potassium fluoride in acetamide and the conversion of 6-O-benzoyl-3-deoxy-3-fluoro-D-glucofuranose into 5-O-benzoyl-2-deoxy-2-fluoro-3-O-formyl-D-arabinofuranose by periodate oxidation. Also described is the synthesis of 1-(2-deoxy-2-fluoro-beta-D-arabinofuranosyl)cytosine. This procedure affords good overall yields of products without formation of undesirable, isomeric intermediates and is suitable for large-scale preparations.
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89
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Ritzmann G, Klein RS, Hollenberg DH, Fox JJ. Nucleosides LXXXIX. Synthesis of 1-(2-chloro-2-deoxy-alpha- and -beta-D-arabinofuranosyl)cytosines. Carbohydr Res 1975; 39:227-36. [PMID: 1139548 DOI: 10.1016/s0008-6215(00)86132-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
1-(2-Chloro-2-deoxy-beta-D-arabinofuranosyl)cytosine (16) and its alpha anomer (18) were synthesized by direct condensation of 3,5-di-O-acetyl-2-chloro-2-deoxy-alpha-D-arabinofuranosyl bromide with trimethylsilylated N-4-acetylcytosine in the absence of catalyst. A new and convenient method for the synthesis of 1,3,5-tri-O-acetyl-2-chloro-2-deoxy-alpha-D-arabinofuranose from methyl 3,5-di-O-benzyl-alpha,beta-D-ribofuranoside is described.
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90
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Watanabe KA, Chiu TM, Hollenberg DH, Fox JJ. Nucleosides. LXXXVII. Total synthesis of pentopyranine A, an alpha-L cytosine nucleoside elaborated by Streptomyces griseochromogenes. J Org Chem 1974; 39:2482-6. [PMID: 4414860 DOI: 10.1021/jo00931a002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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91
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Chiu TM, Orui H, Watanabe KA, Fox JJ. Nucleosides. LXXXIV. Total synthesis of pentopyranine C, a nucleoside elaborated by Streptomyces griseochromogenes. J Org Chem 1973; 38:3622-4. [PMID: 4780828 DOI: 10.1021/jo00960a042] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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92
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Chin TMK, Warnock DH, Watanabc KA, Fox JJ. Nucleosides LXXXII. Synthetic studies on nucleoside antibioties. 12. Synthesis of 1-[3,4-didoxy-4-(sarcosyl-D-seryl)amino-β-D-ribohexopyranosyl]cytosine, and analog of gougerotin. J Heterocycl Chem 1973. [DOI: 10.1002/jhet.5570100432] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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93
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Rabi JA, Fox JJ. Nucleosides. LXXIX. Facile base-catalyzed hydrogen isotope labeling at position 6 of pyrimidine nucleosides. J Am Chem Soc 1973; 95:1628-32. [PMID: 4689324 DOI: 10.1021/ja00786a044] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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94
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Klein RS, Fox JJ. Nucleosides. 78. Synthesis of some 6-substituted uracils and uridines by the Wittig reaction. J Org Chem 1972; 37:4381-6. [PMID: 4642611 DOI: 10.1021/jo00799a029] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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95
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Rabi JA, Fox JJ. Nucleosides. LXXVI. A synthesis of a carbon-carbon bridged pyrimidine cyclonucleoside. J Org Chem 1972; 37:3898-901. [PMID: 4667430 DOI: 10.1021/jo00797a028] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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96
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Fox JJ, Falco EA, Wempen I, Pomeroy D, Dowling MD, Burchenal JH. Oral and parenteral activity of 2,2'-anhydro-1- -D-arabinofuranosyl-5-fluorocytosine against both intraperitoneally and intracerebrally inoculated mouse leukemia. Cancer Res 1972; 32:2269-72. [PMID: 4673145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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97
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98
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Watanabe KA, Falco EA, Fox JJ. Nucleosides. LXXIV. Synthetic studies on nucleoside antibiotics. 8. Syntheses of 1-(4-deoxy-4-(sarcosyl-D-seryl)amino- -D-glucopyranosyl)cytosine and related analogs of gougerotin. J Org Chem 1972; 37:1198-201. [PMID: 5031332 DOI: 10.1021/jo00973a026] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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99
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Watanabe KA, Wempen IM, Fox JJ. Nucleosides. LXXII. Synthetic studies on nucleoside antibiotics. 7. An improved synthesis of C-substance. Carbohydr Res 1972; 21:148-53. [PMID: 5044137 DOI: 10.1016/s0008-6215(00)81740-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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100
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Klein RS, Kotick MP, Watanabe KA, Fox JJ. Nucleosides. 73. Ribosyl analogs of chloramphenicol. J Org Chem 1971; 36:4113-6. [PMID: 5127997 DOI: 10.1021/jo00825a022] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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