The synthesis of chiral β-naphthyl-β-sulfanyl ketones via enantioselective sulfa-Michael reaction in the presence of a bifunctional cinchona/sulfonamide organocatalyst
作者:Deniz Tözendemir、Cihangir Tanyeli
DOI:10.3762/bjoc.17.43
日期:——
Cinchona alkaloid-derived organocatalysts are widely employed in various asymmetric transformations, yielding products with high enantiopurity. In this respect, a bifunctional quinine-derived sulfonamide organocatalyst was developed to catalyze the asymmetric sulfa-Michael reaction of naphthalene-1-thiol with trans-chalcone derivatives. The target sulfa-Michael adducts were obtained with up to 96%
Cellulose type chiral stationary phase based on reduced graphene oxide@silica gel for the enantiomer separation of chiral compounds
作者:Yuanyuan Li、Qiang Li、Nan Zhu、Zhuxian Gao、Yulong Ma
DOI:10.1002/chir.22976
日期:2018.8
coated on the surfaces of rGO@SiO2 to prepare a chiralstationaryphase (CSP) for high performance liquid chromatography. Under the optimum experimental conditions, eight benzene‐enriched enantiomers were separated completely, and the resolution of trans‐stilbene oxide perfectly reached 4.83. Compared with the blank column of non‐bonded rGO, the separation performance is better on the new CSP, which is
Method for Producing (3S)-3-(4-chloro-3-{[(2S,3R)-2-(4-chlorophenyl)-4,4,4-trifluoro-3-methylbutanoyl]amino}phenyl)-3-cyclo-propylpropanoic Acid and the Crystalline Form Thereof for Use as a Pharmaceutical Ingredient
申请人:Bayer Pharma Aktiengesellschaft
公开号:US20210179541A1
公开(公告)日:2021-06-17
The present invention relates to a novel and improved process for preparing (3S)-3-(4-chloro-3-[(2S,3R)-2-(4-chlorophenyl)-4,4,4-trifluoro-3-methylbutanoyl]amino}phenyl)-3-cyclopropylpropanoic acid of the formula (I), to the compound of the formula (I) in crystalline form and to their use for the treatment and/or prevention of diseases, in particular for the treatment and/or prevention of cardiovascular, cardiopulmonary and cardiorenal disorders.
Total Syntheses of Cinchona Alkaloids via Photoredox-Catalyzed Deoxygenative Arylation
作者:Lei Li、Hua-Fei Yang、Qian-Hui Ding、Kun Wei、Yu-Rong Yang
DOI:10.1021/acs.orglett.3c01659
日期:2023.6.23
coupling by MacMillan. Inspired by this method, we report herein its first utilization in natural product total synthesis through realizing the coupling of 4-bromo-quinoline or 4-bromo-6-methoxyquinoline with quincorine or quincoridine, respectively. The alcohols were denovo synthesized in racemic form by a key step of the intramolecular Diels–Alder reaction or in an enantioselective manner by Ir/amine
Method for producing (3S)-3-(4-chloro-3-{[(2S,3R)-2-(4- chlorophenyl)-4,4,4-trifluoro-3-methylbutanoyl]amino}phenyl)-3-cyclo-propylpropanoic acid and the crystalline form thereof for use as a pharmaceutical ingredient
申请人:Bayer Pharma Aktiengesellschaft
公开号:US11332435B2
公开(公告)日:2022-05-17
The present invention relates to a novel and improved process for preparing (3S)-3-(4-chloro-3-[(2S,3R)-2-(4-chlorophenyl)-4,4,4-trifluoro-3-methylbutanoyl]amino}phenyl)-3-cyclopropylpropanoic acid of the formula (I), to the compound of the formula (I) in crystalline form and to their use for the treatment and/or prevention of diseases, in particular for the treatment and/or prevention of cardiovascular, cardiopulmonary and cardiorenal disorders.