Structure–toxicity relationship of aminoglycosides: Correlation of 2′-amine basicity with acute toxicity in pseudo-disaccharide scaffolds
摘要:
A new pseudo-disaccharide NB23 with a 3',4'-methylidene protection was designed and its properties were evaluated in comparison to other two structurally related pseudo-disaccharides. The basicity of the 2'-amine was found to be well correlated to acute toxicity data in mice: the increase in the basicity is associated with the toxicity increase. Based on these data, a new pseudo-trisaccharide NB45 was constructed. NB45 exhibited significant antibacterial activity while at the same time retained low acute toxicity. (C) 2008 Elsevier Ltd. All rights reserved.
Structure–toxicity relationship of aminoglycosides: Correlation of 2′-amine basicity with acute toxicity in pseudo-disaccharide scaffolds
摘要:
A new pseudo-disaccharide NB23 with a 3',4'-methylidene protection was designed and its properties were evaluated in comparison to other two structurally related pseudo-disaccharides. The basicity of the 2'-amine was found to be well correlated to acute toxicity data in mice: the increase in the basicity is associated with the toxicity increase. Based on these data, a new pseudo-trisaccharide NB45 was constructed. NB45 exhibited significant antibacterial activity while at the same time retained low acute toxicity. (C) 2008 Elsevier Ltd. All rights reserved.
Combined Chemical-Enzymatic Assembly of Aminoglycoside Derivatives with N-1-AHB Side Chain
作者:Igor Nudelman、Lilach Chen、Nicholas M. Llewellyn、El-Habib Sahraoui、Marina Cherniavsky、Jonathan B. Spencer、Timor Baasov
DOI:10.1002/adsc.200800229
日期:2008.8.4
A series of unprotected pseudo-disaccharides and pseudo-trisaccharides of 2-deoxystreptamine-containing aminoglycosides have been selectively acylated at the N-1 position with the valuable (S)-4-amino-2-hydroxybutanoyl (AHB) pharmacophore by using the recombinant BtrH and BtrG enzymes from butirosin biosynthesis in combination with a synthetic acyl donor. The process was optimized by performing two
A new pseudo-disaccharide NB23 with a 3',4'-methylidene protection was designed and its properties were evaluated in comparison to other two structurally related pseudo-disaccharides. The basicity of the 2'-amine was found to be well correlated to acute toxicity data in mice: the increase in the basicity is associated with the toxicity increase. Based on these data, a new pseudo-trisaccharide NB45 was constructed. NB45 exhibited significant antibacterial activity while at the same time retained low acute toxicity. (C) 2008 Elsevier Ltd. All rights reserved.