Studies on the Bisoxazoline- and (−)-Sparteine-Mediated Enantioselective Addition of Organolithium Reagents to Imines
作者:Scott E. Denmark、Noriyuki Nakajima、Cory M. Stiff、Olivier J.-C. Nicaise、Michael Kranz
DOI:10.1002/adsc.200800017
日期:2008.5.5
The enantioselective addition of organolithiumreagents to N-anisyl aldimines promoted by chiral bisoxazolines and (-)-sparteine as external ligands is described. This reaction proceeds readily with a wide range of aldimine substrates (aliphatic, aromatic, olefinic) and organolithium nucleophiles (Me, n-Bu, Ph, vinyl) in excellent yields (81-99%) and with high enantioselectivities (up to 95.5:4.5 er)
[EN] PRODRUG COMPOSITIONS AND METHODS OF TREATMENT<br/>[FR] COMPOSITIONS DE PROMÉDICAMENT ET PROCÉDÉS DE TRAITEMENT
申请人:AQUESTIVE THERAPEUTICS INC
公开号:WO2021087359A1
公开(公告)日:2021-05-06
Pharmaceutical compositions include a prodrug of epinephrine are described.
药物组合物包括表述的肾上腺素前药。
Multi-functional ionic liquid compositions for overcoming polymorphism and imparting improved properties for active pharmaceutical, biological, nutritional, and energetic ingredients
申请人:Rogers D. Robin
公开号:US20070093462A1
公开(公告)日:2007-04-26
Disclosed are ionic liquids and methods of preparing ionic liquid compositions of active pharmaceutical, biological, nutritional, and energetic ingredients. Also disclosed are methods of using the compositions described herein to overcome polymorphism, overcome solubility and delivery problems, to control release rates, add functionality, enhance efficacy (synergy), and improve ease of use and manufacture.
[EN] DUAL FUNCTIONING IONIC LIQUIDS AND SALTS THEREOF<br/>[FR] LIQUIDES IONIQUES À DOUBLE FONCTION ET SELS DE CEUX-CI
申请人:UNIV ALABAMA
公开号:WO2010078300A1
公开(公告)日:2010-07-08
Disclosed herein are ionic liquid compositions comprising active pharmaceutical, biological, and nutritional compounds, and methods of use. Further disclosed are compositions of matter including liquid ion pairs alone or in solution and their use; compositions of ionic liquids that are 'solvated,' for example, 'hydrated' and their uses.
Isolation and enantiostability of the B-chiral bis(salicylato)borate anions [B<sub>R</sub>(Sal)<sub>2</sub>] and [B<sub>S</sub>(Sal)<sub>2</sub>]
作者:Lawrence W.-Y. Wong、Alex S.-F. Au Yeung、Gemma S.-S. Tam、Jack W.-H. Kan、Herman H.-Y. Sung、Fu Kit Sheong、Zhenyang Lin、Ian D. Williams
DOI:10.1039/c7ra11997f
日期:——
The chiral spiroborate anions [BS(Sal)2] and [BR(Sal)2], (R and S subscripts indicate boron stereochemistry) have been isolated as 1 : 1 quininium and 1 : 2 sparteinium salts, [HQuin][BS(Sal)2] and [H2Spa][BR(Sal)2]2 respectively, by either cation metathesis or a simple one-pot synthesis involving reaction of boric and salicylic acids with the alkaloid base. Circular dichroism (CD) spectroscopy shows
手性螺硼酸根阴离子 [B S (Sal) 2 ] 和 [B R (Sal) 2 ],(R和S下标表示硼立体化学)已被分离为 1 : 1 quininium 和 1 : 2 sparteinium 盐,[HQuin][ B S (Sal) 2 ] 和 [H 2 Spa][B R (Sal) 2 ] 2分别通过阳离子复分解或涉及硼酸和水杨酸与生物碱碱反应的简单一锅法合成。圆二色性 (CD) 光谱表明,基于 B 的手性在 DMF 或 DMSO 等极性非质子介质中是稳定的,但在质子溶液中不稳定。然后可以通过交换制备具有非手性抗衡阳离子如 [NBu 4 ][B R (Sal) 2 ] 的对映体纯盐,因此这些 B 手性阴离子可用于基于复分解的拆分。由于位点紊乱,[H 2 Spa][B R (Sal) 2 ] 2中的阴离子被限制为 70% ee,但是对映体纯类似物 [H 2 Spa][B R (5-Cl-Sal)2