摘要 描述了一种有效的方案,可以轻松获得手性 2-( N -Boc-氮杂环丁烷-3-基)-2-烷基丙酸作为新型 GABA 衍生物。在合成的第一阶段,烷基化膦酸酯和N -Boc-氮杂环丁烷-3-酮通过Horner-Wadsworth-Emmons反应转化为相应的N -Boc-氮杂环丁烷-3-亚基;然后将这些进行标准氢化程序。随后外消旋氨基酯与氢氧化钠在甲醇中反应,得到目标外消旋N -Boc-氨基酸作为主要产物。以( S )-4-苄基-2-恶唑烷酮为拆分剂,通过外消旋体的光学拆分制备了2-( N -Boc-氮杂环丁烷-3-基)-2-烷基丙酸的光学活性对映体,得到非对映体对。分离出纯的非对映体后,用氢氧化锂和过氧化氢处理它们,分别得到相应的对映体纯的2-( N -Boc-氮杂环丁烷-3-基)-2-烷基丙酸。明确的结构归属基于 1 H、 13 C、15 N 和31 P NMR 光谱;人力资源管理系统;和单晶X射线衍射数据。
摘要 描述了一种有效的方案,可以轻松获得手性 2-( N -Boc-氮杂环丁烷-3-基)-2-烷基丙酸作为新型 GABA 衍生物。在合成的第一阶段,烷基化膦酸酯和N -Boc-氮杂环丁烷-3-酮通过Horner-Wadsworth-Emmons反应转化为相应的N -Boc-氮杂环丁烷-3-亚基;然后将这些进行标准氢化程序。随后外消旋氨基酯与氢氧化钠在甲醇中反应,得到目标外消旋N -Boc-氨基酸作为主要产物。以( S )-4-苄基-2-恶唑烷酮为拆分剂,通过外消旋体的光学拆分制备了2-( N -Boc-氮杂环丁烷-3-基)-2-烷基丙酸的光学活性对映体,得到非对映体对。分离出纯的非对映体后,用氢氧化锂和过氧化氢处理它们,分别得到相应的对映体纯的2-( N -Boc-氮杂环丁烷-3-基)-2-烷基丙酸。明确的结构归属基于 1 H、 13 C、15 N 和31 P NMR 光谱;人力资源管理系统;和单晶X射线衍射数据。
[EN] ANTIBACTERIAL DERIVATIVES OF TOBRAMYCIN<br/>[FR] DÉRIVÉS ANTIBACTÉRIENS DE TOBRAMYCINE
申请人:ACHAOGEN INC
公开号:WO2010132760A1
公开(公告)日:2010-11-18
Compounds having antibacterial activity are disclosed. The compounds have the following structure (I): including stereoisomers, pharmaceutically acceptable salts and prodrugs thereof, wherein Q1, Q2, Q3, R1, R2 and R3 are as defined herein. Methods associated with preparation and use of such compounds, as well as pharmaceutical compositions comprising such compounds, are also disclosed.
[EN] ANTIBACTERIAL DERIVATIVES OF SISOMICIN<br/>[FR] DÉRIVÉS ANTIBACTÉRIENS DE SISOMICINE
申请人:ACHAOGEN INC
公开号:WO2010132768A1
公开(公告)日:2010-11-18
Antibacterial compounds of structure (I) are disclosed, including stereoisomers, pharmaceutically acceptable salts and prodrugs thereof, wherein Q1, Q2, Q3, R11 and R12 are as defined herein. Methods associated with preparation and use of such compounds, as well as pharmaceutical compositions comprising such compounds, are also disclosed.