[EN] N-(ALKANOYL)-7-OXO-6-SULFOOXY-1,6-DIAZABICYCLO[3.2.1]OCTANE-2-CARBONYLHYDRAZIDE DERIVATIVES AND THEIR USE AS ANTIBACTERIAL AGENTS [FR] DÉRIVÉS DE N-(ALCANOYL)-7-OXO-6-SULFOOXY-1,6-DIAZABICYCLO[3.2.1]OCTANE-2-CARBONYLHYDRAZIDE ET LEUR UTILISATION COMME AGENTS ANTIBACTÉRIENS
[EN] N-(ALKANOYL)-7-OXO-6-SULFOOXY-1,6-DIAZABICYCLO[3.2.1]OCTANE-2-CARBONYLHYDRAZIDE DERIVATIVES AND THEIR USE AS ANTIBACTERIAL AGENTS [FR] DÉRIVÉS DE N-(ALCANOYL)-7-OXO-6-SULFOOXY-1,6-DIAZABICYCLO[3.2.1]OCTANE-2-CARBONYLHYDRAZIDE ET LEUR UTILISATION COMME AGENTS ANTIBACTÉRIENS
Regiospecific Chlorination of (<i>S</i>)-β-Tyrosyl-<i>S</i>-Carrier Protein Catalyzed by SgcC3 in the Biosynthesis of the Enediyne Antitumor Antibiotic C-1027
作者:Shuangjun Lin、Steven G. Van Lanen、Ben Shen
DOI:10.1021/ja072311g
日期:2007.10.1
C-1027 is a potent antitumor antibiotic composed of an apo-protein and a reactive enediyne chromophore. The chromophore consists of four different chemical subunits including an (S)-3-chloro-4,5dihydroxy-beta-phenylalanine moiety, the biosynthesis of which from L-a-tyrosine is catalyzed by six proteins, SgcC, SgcC1, SgcC2, SgcC3, SgcC4, and SgcC5. Biochemical characterization of SgcC3 unveiled the following: (i) SgcC3 is a flavin adenine dinucleoticle (FAD)-dependent halogenase; (ii) SgcC3 acts only on the SgcC2 pepticlyl carrier protein-tethered substrates; (iii) SgcC3-catalyzed halogenation requires 02 and reduced FAD and either the C-1027 pathway-specific flavin reductase SgcE6 or E. coli flavin reductase (Fre) can support the SgcC3 activity; (iv) SgcC3 also efficiently catalyzes bronnination but not fluorination or iodination; (v) SgcC3 can utilize both (S)- and (R)-beta-tyrosyl-S-SgcC2 but not 3-hydroxy-beta-tyrosyl-SSgcC2 as a substrate. These results establish that SgcC3 catalyzes the third enzymatic transformation during the biosynthesis of the (S)-3-chloro-4,5-dihydroxy- beta-phenylalanine moiety of C-1027 from L-alpha-tyrosine. SgcC3 now represents the second biochemically characterized flavin-dependent halogenase that acts on a carrier protein-tethered substrate. These findings will facilitate the engineering of new C-1027 analogs by combinatorial biosynthesis methods.
[EN] N-(ALKANOYL)-7-OXO-6-SULFOOXY-1,6-DIAZABICYCLO[3.2.1]OCTANE-2-CARBONYLHYDRAZIDE DERIVATIVES AND THEIR USE AS ANTIBACTERIAL AGENTS<br/>[FR] DÉRIVÉS DE N-(ALCANOYL)-7-OXO-6-SULFOOXY-1,6-DIAZABICYCLO[3.2.1]OCTANE-2-CARBONYLHYDRAZIDE ET LEUR UTILISATION COMME AGENTS ANTIBACTÉRIENS
申请人:WOCKHARDT LTD
公开号:WO2017216764A1
公开(公告)日:2017-12-21
Compounds of Formula (I), or a stereoisomer or a pharmaceutically acceptable salt thereof, their preparation, pharmaceutical compositions comprising such compounds and their use in treating and/or preventing bacterial infections are disclosed.