Practical and Cost-Effective Manufacturing Route for the Synthesis of a β-Lactamase Inhibitor
摘要:
Compound 1, a potent and irreversible inhibitor of beta-lactamases, is in clinical trials with beta-lactam antibiotics for the treatment of serious and antibiotic-resistant bacterial infections. A short, scalable, and cost-effective route for the production of this densely functionalized polycyclic molecule is described.
申请人:The Research Foundation of State University of New York
公开号:US07385064B1
公开(公告)日:2008-06-10
Disclosed are compounds having the following formula:
in which Z11 is selected from a substituted or unsubstituted saturated adamantyl or other polycyclic group and a substituted or unsubstituted branched acyclic group containing at least 5 carbon atoms at least one of which is a tertiary carbon; and in which Z12 is a cyclic imide. Methods of using these compounds as chiral catalysts for carbenoid reactions and for enantioselective C—H aminations are also described.
benzylamines has been achieved for the first time through transition-metal-catalyzed oxidative carbonylation, in which the new KR strategy offered a new approach to afford chiral isoindolinones (er up to 97 : 3) and the origin of chemoselectivity and stereoselectivity was confirmed by density functional theory (DFT) calculations.
Kinetic Resolution of Benzylamines via Palladium(II)-Catalyzed C–H Cross-Coupling
作者:Kai-Jiong Xiao、Ling Chu、Gang Chen、Jin-Quan Yu
DOI:10.1021/jacs.6b04660
日期:2016.6.22
A Pd(II)-catalyzed enantioselective C-H cross-coupling of benzylamines via kinetic resolution has been achieved using chiral mono-N-protected α-amino-O-methylhydroxamic acid (MPAHA) ligands. Both chiral benzylamines and ortho-arylated benzylamines are obtained in high enantiomeric purity. The use of a readily removable nosyl (Ns) protected amino group as the directing group is a crucial practical advantage
Unified sensing of the concentration and enantiomeric composition of chiral compounds with an achiral probe
作者:Archita Sripada、F. Yushra Thanzeel、Christian Wolf
DOI:10.1016/j.chempr.2022.03.008
日期:2022.6
Long-standing impracticalities with optical chiralcompoundsensing have limited the potential and acceptance of high-throughput experimentation technology despite the introduction of commercially available circulardichroism (CD) microplate readers. Chiroptical asymmetric reaction sensing typically requires UV or fluorescence measurements in combination with CD analysis to determine yield and enantiomeric
尽管引入了商用圆二色性 (CD) 酶标仪,但光学手性化合物传感长期存在的不切实际限制了高通量实验技术的潜力和接受度。手性不对称反应传感通常需要结合 CD 分析进行紫外或荧光测量,以通过两条单独的校准曲线确定产率和对映体比率。在这里,我们介绍了一种策略,该策略通过专门使用 CD 分析和非手性探针来实现,该探针设计用于定量检测胺、氨基醇和所有标准手性氨基酸,从而消除了对紫外和荧光测量的需要。统一的 CD 传感优于传统的光学、NMR 和色谱方法,并提供速度、劳动力、减少化学废物产生的成本效益。它可以很容易地适应任何实验室,无需后处理即可应用于微尺度不对称反应筛选,并且普遍适用且不限于使用任何特定的光学探针。
Dirhodium Tetracarboxylates Derived from Adamantylglycine as Chiral Catalysts for Enantioselective C−H Aminations
作者:Ravisekhara P. Reddy、Huw M. L. Davies
DOI:10.1021/ol061742l
日期:2006.10.1
The dirhodium tetracarboxylate, Rh-2(S-TCPTAD)(4), derived from adamantylglycine, is an effective chiral catalyst for both inter- and intramolecular C-H aminations.