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Volumn 118, Issue 42, 1996, Pages 10150-10155

Rapid combinatorial synthesis of aminoglycoside antibiotic mimetics: Use of a polyethylene glycol-linked amine and a neamine-derived aldehyde in multiple component condensation as a strategy for the discovery of new inhibitors of the HIV RNA Rev responsive element

Author keywords

[No Author keywords available]

Indexed keywords

AMINOGLYCOSIDE ANTIBIOTIC AGENT; ANTIVIRUS AGENT; NEAMINE;

EID: 0029905917     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja9612817     Document Type: Article
Times cited : (211)

References (32)
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    • note
    • 2, and DMF at rt for 1 h gave predominantly the de-O-acetylated products.
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    • (a) For comparison, the four-component condensation reaction was carried out using a β-alanine-linked Wang resin as the amine component, 7 as an aldehyde, and tert-butyl isocyanide and Cbz-N-protected lysine as an acid in MeOH, trimethyl orthoformate, or 2,2,2-trifluoroethanol. None of the solvents provided an adequate solvation for the reaction. The same reaction was then carried out in 30% (v/v) of each of the above solvents in DMF and a significantly lowered reactivity was observed. Because DMF is not a good solvent for the reaction as a Schiff base formation is required. After 7 days ca. 30% of the unreacted β-alanine was recovered from the cleaved products. In addition, it is difficult to monitor the reaction progress using the solid-phase method unless the intermediate is cleaved from the support. The solution-phase MCC requires chromatography to isolate the desired product, (b) For recent developments on solid-phase combinatorial chemistry, see: Thompson, L. A.; Ellman, J. A. Chem. Rev. 1996, 96, 555. Armstrong, R. W.; Combs, A. P.; Tempest, P. A.; Brown, S. D.; Keating, T. A. Acc. Chem. Res. 1996, 29, 123. Keating, T. A.; Armstrong, R. W. J. Am. Chem. Soc. 1996, 118, 2574.
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    • (a) For comparison, the four-component condensation reaction was carried out using a β-alanine-linked Wang resin as the amine component, 7 as an aldehyde, and tert-butyl isocyanide and Cbz-N-protected lysine as an acid in MeOH, trimethyl orthoformate, or 2,2,2-trifluoroethanol. None of the solvents provided an adequate solvation for the reaction. The same reaction was then carried out in 30% (v/v) of each of the above solvents in DMF and a significantly lowered reactivity was observed. Because DMF is not a good solvent for the reaction as a Schiff base formation is required. After 7 days ca. 30% of the unreacted β-alanine was recovered from the cleaved products. In addition, it is difficult to monitor the reaction progress using the solid-phase method unless the intermediate is cleaved from the support. The solution-phase MCC requires chromatography to isolate the desired product, (b) For recent developments on solid-phase combinatorial chemistry, see: Thompson, L. A.; Ellman, J. A. Chem. Rev. 1996, 96, 555. Armstrong, R. W.; Combs, A. P.; Tempest, P. A.; Brown, S. D.; Keating, T. A. Acc. Chem. Res. 1996, 29, 123. Keating, T. A.; Armstrong, R. W. J. Am. Chem. Soc. 1996, 118, 2574.
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    • Armstrong, R.W.1    Combs, A.P.2    Tempest, P.A.3    Brown, S.D.4    Keating, T.A.5
  • 27
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    • (a) For comparison, the four-component condensation reaction was carried out using a β-alanine-linked Wang resin as the amine component, 7 as an aldehyde, and tert-butyl isocyanide and Cbz-N-protected lysine as an acid in MeOH, trimethyl orthoformate, or 2,2,2-trifluoroethanol. None of the solvents provided an adequate solvation for the reaction. The same reaction was then carried out in 30% (v/v) of each of the above solvents in DMF and a significantly lowered reactivity was observed. Because DMF is not a good solvent for the reaction as a Schiff base formation is required. After 7 days ca. 30% of the unreacted β-alanine was recovered from the cleaved products. In addition, it is difficult to monitor the reaction progress using the solid-phase method unless the intermediate is cleaved from the support. The solution-phase MCC requires chromatography to isolate the desired product, (b) For recent developments on solid-phase combinatorial chemistry, see: Thompson, L. A.; Ellman, J. A. Chem. Rev. 1996, 96, 555. Armstrong, R. W.; Combs, A. P.; Tempest, P. A.; Brown, S. D.; Keating, T. A. Acc. Chem. Res. 1996, 29, 123. Keating, T. A.; Armstrong, R. W. J. Am. Chem. Soc. 1996, 118, 2574.
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    • Trifluoroacetic acid as a salt was removed by treating the PEG derivative with a basic ion-exchange resin (Amberlite IRA-400(OH)) in methanol for less than 5 min
    • Trifluoroacetic acid as a salt was removed by treating the PEG derivative with a basic ion-exchange resin (Amberlite IRA-400(OH)) in methanol for less than 5 min.
  • 32
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    • For the purpose of characterizations of the MCC products before deprotection, glycine methyl ester was used as the amine component instead of the PEG attached glycine
    • For the purpose of characterizations of the MCC products before deprotection, glycine methyl ester was used as the amine component instead of the PEG attached glycine.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.