[EN] METHOD FOR THE PREPARATION OF 1-(2-HALOGEN-ETHYL)-4 PIPERIDINE-CARBOXYLIC ACID ETHYL ESTERS<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ESTERS ÉTHYLIQUES DE L'ACIDE 1-(2-HALOGÈNE-ÉTHYL)-4 PIPÉRIDINE CARBOXYLIQUE
申请人:LABORATORIO CHIMICO INT SPA
公开号:WO2016071792A1
公开(公告)日:2016-05-12
The present invention refers to a process for the preparation of 1-(2-halogen-ethyl)-4-piperidinecarboxylic acid ethyl esters, in particular of 1-(2-chloroethyl)-4 piperidinecarboxylic acid ethyl ester, a versatile synthesis intermediate, particularly useful as an intermediate compound in the synthesis of umeclidinium.
[EN] METHODS OF PREPARATION OF MUSCARINIC ACETYLCHOLINE RECEPTOR ANTAGONISTS<br/>[FR] PROCEDES DE PREPARATION D'ANTAGONISTES DES RECEPTEURS CHOLINERGIQUES MUSCARINIQUES
申请人:GLAXO GROUP LTD
公开号:WO2011029896A1
公开(公告)日:2011-03-17
The present application describes novel intermediates useful in the synthesis of mAChRs and methods for preparing these intermediates, comprising a compound of Formula (II): wherein, P is a suitably nitrogen protecting group; R is selected from the group consisting of C1-8alkyl, C2-8alkenyl, C2-8alkynyl, C3-6cycloalkyl, C3-6cycloalkenyl, heterocyclic, heterocyclic C1-4alkyl, aryl, aryl C1-4alkyl and heteroaryl C1-4alkyl; and Y is a suitable leaving group.
Halogen-Bonded Supramolecular Capsules in the Solid State, in Solution, and in the Gas Phase
作者:Oliver Dumele、Benedikt Schreib、Ulrike Warzok、Nils Trapp、Christoph A. Schalley、François Diederich
DOI:10.1002/anie.201610884
日期:2017.1.19
Supramolecular capsules were assembled by neutral halogen bonding (XB) and studied in the solidstate, in solution, and in the gas phase. The geometry of the highly organized capsules is shown by an X‐ray crystal structure which features the assembly of two XB hemispheres, geometrically rigidified by H‐bonding to eight MeOH molecules and encapsulation of two benzene guests. To enhance capsular association
超分子胶囊通过中性卤素键(XB)组装而成,并以固态,溶液形式和气相形式进行研究。X射线晶体结构显示了高度组织化的胶囊的几何结构,该结构的特征是两个XB半球的组装,通过与8个MeOH分子的氢键键合和两个苯客体的包封进行几何固定。为了增强包囊缔合强度,调整XB供体比调整XB受体更有效,这是由于质子溶剂中的去溶剂化罚分,如四喹核苷XB受体半球所示。使用四(碘乙炔基)XB供体和四甲基吡啶XB受体,氘代苯/丙酮/甲醇70:30:1在283 K下的缔合达到K a =(2.11±0.39)×10 5 m -1(ΔG= -6.9±0.1kcal mol -1)。XB胶囊在气相中的稳定性已通过电喷雾电离质谱(ESI-MS)进行了确认。在拉长的碘乙炔基胶囊中发现了新的客体结合位点。