New Synthetic Methods for Seven- and Eight-Membered Cyclic Ethers Based on the Ring-Expansion Reactions of Hydroxy or Lithioxy Methoxyallenylisochroman Derivatives
The Pd(0)-catalyzed ring-expansion reactions of hydroxy methoxyallenyl-4,4-dialkylisochroman derivatives in the presence of P(o-tolyl) 3 proceeded smoothly via hydropalladation to give 3-benzoxepan-1-one derivatives in high yields. Treatment of isochroman-1-one derivatives with lithio methoxyallene followed by quenching the reaction with water furnished 3-benzoxocan-6-one derivatives in good yields
Enantioselective Copper-Catalyzed Alkynylation of Benzopyranyl Oxocarbenium Ions
作者:Harathi D. Srinivas、Prantik Maity、Glenn P. A. Yap、Mary P. Watson
DOI:10.1021/acs.joc.5b00364
日期:2015.4.17
We have developed highly enantioselective, copper-catalyzedalkynylations of benzopyranyl acetals. By using a copper(I) catalyst equipped with a chiral bis(oxazoline) ligand, high yields and enantioselectivities are achieved in the alkynylation of widely available, racemic isochroman and chromene acetals to deliver α-chiral oxygen heterocycles. This method demonstrates that chiral organometallic nucleophiles
Inhibitors of the renal outer medullary potassim channel
申请人:MERCK SHARP & DOHME CORP.
公开号:US10000484B2
公开(公告)日:2018-06-19
The present invention provides compounds of Formula (I) (Formula (I)) including pharmaceutically acceptable salts thereof, which are inhibitors of the ROMK (Kir1.1) channel. The compounds may be used as diuretic and/or natriuretic agents and for the therapy and prophylaxis of medical conditions including cardiovascular diseases such as hypertension, heart failure and chronic kidney disease and conditions associated with excessive salt and water retention.
Polymerizable monomer, liquid crystal composition using polymerizable monomer, and liquid crystal display device
申请人:DIC Corporation
公开号:US11312906B2
公开(公告)日:2022-04-26
A problem to be solved by the present invention is to provide a liquid crystal composition excellent in vertical alignment and compatibility and to provide a liquid crystal display device produced using the same. The problem is solved by a liquid crystal composition containing one or two or more kinds of self-aligning polymerizable monomers and one or two or more kinds of polymerizable monomers (or polymerizable compounds) having a specific chemical structure, and a liquid crystal display device produced using the same, specifically a liquid crystal composition containing a polymerizable monomer represented by General Formula (I) and a spontaneously aligning monomer which has a chemical structure different from that of the polymerizable monomer represented by General Formula (I), and has a polar group, and a liquid crystal display device containing the same.