Stereoselective total synthesis of lysocellin, the representative polyether antibiotic of the lysocellin family. Part 1. Synthesis of C1–C9 and C16–C23 subunits
The C1–C9 (4) and C16–C23 subunits (9) of lysocellin (1), a representative polyetherantibiotic, were synthesized stereoselectively from D-glucose and D-mannitol. Stereocontrolled hydroboration, Michael reaction, Grignard reaction, etc. were successfully applied.
HIV-1 PROTEASE INHIBITORS HAVING GEM-DI-FLUORO BICYCLIC P2-LIGANDS
申请人:Purdue Research Foundation
公开号:US20150072958A1
公开(公告)日:2015-03-12
Various embodiments of the present invention relate to, among other things, compounds and methods of using those compounds to treat an HIV infection. The compounds of the various embodiments of the present invention provide, among other things, therapeutic agents having enhanced penetration capability across the blood-brain barrier, such that they can enter the CNS to treat an HIV-1 infection in the CNS.
On the conversion of structural analogues of (S)-2-hydroxypropylphosphonic acid to epoxides by the final enzyme of fosfomycin biosynthesis in S. fradiae
作者:Anna Schweifer、Friedrich Hammerschmidt
DOI:10.1016/j.bmcl.2007.12.012
日期:2008.5
2-Hydroxyethyl- and (S)-2-hydroxybutylphosphonic acid were prepared, starting in the latter case from (S)-2-aminobutyric acid. They were fed to cultures of Streptomyces fradiae producing fosfomycin. Only the latter (150 mu g/mL of medium) was converted to the ethyl analogue of fosfomycin, isolated as 2-amino-1-hydroxybutylphosphonic acid (3%)in admixture with 2-amino-1-hydroxypropylphosphonic acid (97%) derived from fosfomycin. (c) 2008 Elsevier Ltd. All rights reserved.