biosynthesis of lipid A, is crucial for the growth of Gram‐negative bacteria. This enzyme has accordingly been identified as a potential target for the development of novel antibiotics against Gram‐negative bacteria. The carbohydrate‐derived hydroxamic acid 1 (1,5‐anhydro‐2‐C‐(carboxymethyl N‐hydroxyamide)‐2‐deoxy‐3‐O‐myristoyl‐ D‐glucitol) was previously shown to exhibit a wide spectrum of inhibitory activity
A stereoselective synthesis of indole-.beta.-N-glycosides: an application to the synthesis of rebeccamycin
作者:Michel Gallant、James T. Link、Samuel J. Danishefsky
DOI:10.1021/jo00054a015
日期:1993.1
Sodium salts of indoles have been found to open alpha-1,2-anhydrosugars with inversion yielding indole-beta-N-glycosides. This methodology constitutes a concise route from glycals to the biologically active indole-N-glycosides. An application to the total synthesis of rebeccamycin is described.
Microbial biotransformations of a synthetic immunomodulating agent, HR325
作者:Isabelle Lacroix、Jacques Biton、Robert Azerad
DOI:10.1016/s0968-0896(97)00094-1
日期:1997.7
alcohol, and has been fully characterized by independent synthesis. The different metabolic patterns of HR325 in the three fungal strains are discussed, and a mechanistic hypothesis about the oxidative cleavage of the right part of the molecule is proposed. The production of microbial metabolites is compared to animal metabolism in terms of structure and efficiency.