Derivatives of cyclic ethers and sulfides for the treatment of
申请人:The Du Pont Merck Pharmaceutical Company
公开号:US05491152A1
公开(公告)日:1996-02-13
The present invention provides compounds of Formula I, ##STR1## or a pharmaceutically acceptable salt forms thereof, which are inhibitors of acyl-Coenzyme A: cholesterol O-acyltransferase (ACAT), pharmaceutical compositions containing such compounds, processes for the preparation of such compounds, and the use of such compounds as antihypercholesterolemic and/or antiatherosclerotic agents.
3,6‐Dihydro‐2H‐thiopyrans are important structural motifs both in organic synthesis and medicinal chemistry. A continuous flow‐process for the photochemical generation of thioaldehydes from phenacyl sulfides and the ensuing [4+2]‐cycloaddition with electron‐rich 1,3‐dienes was developed. The cycloadducts were obtained with excellent yields in short reaction times and much improved productivities as
Cooperative Photoinduced/Brønsted Acid Catalyzed Cycloaddition of Transient Thioaldehydes and <i>ortho</i>-Quinone Methides toward a Synthesis of Benzo[<i>e</i>][1,3]oxathiines
作者:Florian Sachse、Christoph Schneider
DOI:10.1021/acs.orglett.1c00588
日期:2021.4.2
in situ generation and ensuing cycloaddition of thioaldehydes and ortho-quinone methides transiently formed under irradiation with UV-A light and Brønsted acid catalysis, respectively, has been developed giving direct access to benzo[e][1,3]oxathiines in good to excellent yields and diastereoselectivity. Both electron-rich and electron-poor thioaldehydes easily react with a broad range of ortho-quinone
已经开发了一种合作的一锅法,用于原位生成并随后分别在UV-A光和Brønsted酸催化下短暂形成的硫代醛和邻醌甲基化物环加成反应,从而可以直接获得苯并[ e ] [ 1,3]氧杂蒽酮具有良好的收率和非对映选择性。富电子和贫电子的硫醛都可以在环境温度下以很短的反应时间轻松地与各种邻苯二甲基甲烷反应,以提供各种S,O-杂环。
Macromolecular Surface Design: Photopatterning of Functional Stable Nitrile Oxides
The efficient trapping of photogenerated thioaldehydes with functional shelf‐stablenitrileoxides in a 1,3‐dipolar cycloaddition is a novel and versatile photochemical strategy for polymer end‐group functionalization and surface modification under mild and equimolar conditions. The modular ligation in solution was followed in detail by electrospray ionization mass spectrometry (ESI‐MS). X‐ray photoelectron