[EN] SPIROLACTAM CGRP RECEPTOR ANTAGONISTS<br/>[FR] ANTAGONISTES DE RÉCEPTEUR DE CGRP À BASE DE SPIROLACTAME
申请人:MERCK SHARP & DOHME
公开号:WO2013169567A1
公开(公告)日:2013-11-14
The present invention is directed to spirolactam analogues which are antagonists of CGRP receptors and useful in the treatment or prevention of diseases in which CGRP is involved, such as migraine. The invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which CGRP is involved.
of hybrid catalysts incorporating chloramphenicol base with another chiral scaffold using a squaramide linker have been developed and successfully applied in Michael addition of 2,3-dihydrobenzofuran-2-carboxylates to nitroolefins. The controlling experiments suggested that the hybrid catalysts were more reactive than non-hybridized bifunctional catalysts and the matching of chiralities between two
A Highly Enantio‐ and Diastereoselective Synthesis of Spirocyclic Dihydroquinolones via Domino Michael Addition‐Lactamization of
<i>ortho</i>
‐Quinone Methide Imines
作者:Tomáš Hodík、Christoph Schneider
DOI:10.1002/chem.201803886
日期:2018.12.5
dihydroquinolones have been obtained with good yields and excellent diastereoselectivity (>20:1 d.r.), and enantioselectivity (up to 99:1 e.r.) from in situ generated ortho‐quinone methide imines and cyclic β‐oxo esters. This one‐step domino Michael addition–lactamization process features mild reaction conditions, easily accessible starting materials, and products with two adjacent chiral centers one of
Stereodivergent Synthesis of 3-Aminooxindole Derivatives Containing Vicinal Tetrasubstituted Stereocenters via the Mannich Reaction
作者:Koilpitchai Sivamuthuraman、Venkitasamy Kesavan
DOI:10.1021/acs.joc.8b01020
日期:2018.8.17
A highly enantioselective stereodivergent synthesis of 3-aminooxindole derivatives was accomplished via asymmetric Mannich reaction between 2-substituted benzofuran-3-one and isatin-derived ketimines. Both anti and syn-selective chiral 3,3-disubstituted amino oxindoles bearing two adjacent tetrasubstituted stereogenic centers with high yield and excellent enantioselectivities were obtained using readily
Asymmetric Synthesis of 2,2-Disubstituted Benzofuranones through an Organocatalytic Alkylation with Nitroallylic Acetates
作者:Dieter Enders、Long Zhao、Gerhard Raabe
DOI:10.1055/s-0037-1610337
日期:2019.3
Abstract The asymmetricallylic alkylation of benzofuran-3(2H)-ones with nitroallylic acetates has been achieved employing a bifunctional thiourea organocatalyst via SN2′ substitution. A series of 2,2-disubstituted benzofuranones bearing adjacent tetrasubstituted and tertiary stereocenters have been synthesized with moderate to good yields and very good stereoselectivities. The asymmetricallylic alkylation
摘要 苯并呋喃-3(2 H)-ones与硝基烯丙基乙酸酯的不对称烯丙基烷基化已经通过S N 2'取代使用双官能硫脲有机催化剂实现。已经合成了具有相邻的四取代和叔立体中心的一系列2,2-二取代的苯并呋喃酮,具有中等至良好的产率和非常好的立体选择性。 苯并呋喃-3(2 H)-ones与硝基烯丙基乙酸酯的不对称烯丙基烷基化已经通过S N 2'取代使用双官能硫脲有机催化剂实现。已经合成了具有相邻的四取代和叔立体中心的一系列2,2-二取代的苯并呋喃酮,具有中等至良好的产率和非常好的立体选择性。