Substituted Bicyclic Dihydropyrimidinones And Their Use As Inhibitors Of Neutrophil Elastase Activity
申请人:GNAMM Christian
公开号:US20140249129A1
公开(公告)日:2014-09-04
This invention relates to substituted bicyclic dihydropyrimidinones of formula 1
and their use as inhibitors of neutrophil elastase activity, pharmaceutical compositions containing the same, and methods of using the same as agents for treatment and/or prevention of pulmonary, gastrointestinal and genitourinary diseases, inflammatory diseases of the skin and the eye and other autoimmune and allergic disorders, allograft rejection, and oncological diseases.
作者:Samuel D. Griggs、Nathan Thompson、Daniel T. Tape、Marie Fabre、Paul A. Clarke
DOI:10.1002/chem.201702467
日期:2017.7.12
A general two-stepsynthesis of 2-spiropiperidines has been developed. δ-Amino-β-ketoesters can be reacted with cyclic ketones to generate 2-spiropiperidines in good to excellent yields. The 2-spiropiperidines formed occupy an under-explored region of 3D-chemical space and are novel scaffolds for use in drug discovery programs. These 2-spiropiperidines can be further functionalised to generate small
Cyclopropenimine-Catalyzed Enantioselective Mannich Reactions of <i>tert</i>-Butyl Glycinates with <i>N</i>-Boc-Imines
作者:Jeffrey S. Bandar、Tristan H. Lambert
DOI:10.1021/ja407277a
日期:2013.8.14
shown to catalyze Mannichreactions between glycine imines and N-Boc-aldimines with high levels of enantio- and diastereocontrol. The reactivity of 1 is shown to be substantially greater than that of a widely used thiourea cinchona alkaloid-derived catalyst. A variety of aryl and aliphatic N-Boc-aldimines are effective substrates for this transformation. A preparative-scale reaction to deliver >90 mmol
Synthesis of highly substituted 2-spiropiperidines
作者:Samuel D. Griggs、Nathan Thompson、Daniel T. Tape、Marie Fabre、Paul A. Clarke
DOI:10.1039/c8ob01272e
日期:——
2-Spiropiperidines are a highly desirable, yet under represented structure in drug discovery. 2-Spiropiperidines were synthesised in either a two-pot or one-pot reaction. In the two-pot reaction, the addition of a Weiler dianion to N-Boc imines, followed by deprotection and in situ condensation with a cyclic ketone generated functionalised 2-spiropiperidines in good to excellent yields. In the one-pot
catalytic enantio- and diastereoselective nitro-Mannichreaction of α-amido sulfones in the mixed solvent of toluene/H2O has been realized using a phase-transfer catalyst (PTC) derived from cinchona alkaloids and N-benzotriazole. It performed well over a wide range of substrates to give the desired products in good yields (up to 94%) with excellent enantioselectivities (up to 99% ee) and diastereoselectivities
使用衍生自金鸡纳生物碱和N-苯并三唑的相转移催化剂(PTC)实现了α-酰胺基砜在甲苯/ H 2 O混合溶剂中的催化对映体和非对映体的硝基曼尼希反应。它在各种底物上均表现良好,以高收率(最高94%)提供所需的产品,并具有出色的对映选择性(最高99%ee)和非对映选择性(最高99:1)。