Racemicazlactones are transformed into valuable chiral heterocycles via an asymmetric organocatalytic Mannich reaction followed by gold‐catalyzed cyclization or reduction.
Amido-substituted Malonic Acid Half Oxyesters (MAHOs) have proven to be excellent partners of various aromatic aldehydes in the presence of secondary amine, trifluoromethanesulfonic acid to perform a Knoevenagel–Doebnercondensation under mild conditions with good to excellent yields. A mechanistic study revealed that the sequence involved the formation of an iminium intermediate to provide stereoselectively Z-α,β-unsaturated
Enantioenriched pipecolic esters were prepared in good yields in the decarboxylation, at room temperature, of N-protected piperidinohemimalonates catalyzed by cinchona alkaloids. Enantiomeric excesses as high as 72% were obtained when using 9-epi-cinchonine and the N-benzoyl substituted piperidinohemimalonate. A detailed study of the different reaction parameters revealed that the selectivity of this
Glycogen Phosphorylase Inhibitor Compounds and Pharmaceutical Compositions Thereof
申请人:Evans Karen
公开号:US20070249670A1
公开(公告)日:2007-10-25
The invention relates to glycogen phosphorylase inhibitor compounds, pharmaceutical compositions of these compounds, methods of treatment using the pharmaceutical compositions to treat diabetes, conditions associated with diabetes, and/or tissue ischemia, including myocardial ischemia, and processes for making the compounds.
Electrochemical Synthesis of Unnatural Amino Acids via Anodic Decarboxylation of <i>N</i>-Acetylamino Malonic Acid Derivatives
作者:Olesja Koleda、Katrina Prane、Edgars Suna
DOI:10.1021/acs.orglett.3c02687
日期:2023.11.10
α-disubstituted cyclic amino acidderivatives in medicinal chemistry urges for analogue design with improved pharmacokinetic properties. Herein, we disclose an electrochemical approach toward unnatural THF- and THP-containing amino acidderivatives that relies on anodic decarboxylation-intramolecular etherification of inexpensive and readily available N-acetylamino malonicacid monoesters under Hofer–Moest
α,α-二取代环状氨基酸衍生物在药物化学中的广泛应用迫切需要具有改进的药代动力学特性的类似物设计。在此,我们公开了一种针对非天然含THF和THP的氨基酸衍生物的电化学方法,该方法依赖于廉价且容易获得的N-乙酰氨基丙二酸单酯在Hofer-Moest反应条件下的阳极脱羧-分子内醚化。脱羧环化在恒定电流条件下在未分裂的细胞中在水性介质中进行,无需添加任何碱。在组织蛋白酶 K 抑制剂 balicatib 中,用含 THP 的氨基酸支架成功生物等排取代 1-氨基环己烷-1-羧酸亚基,有助于降低亲脂性,同时保留低纳摩尔酶抑制效力和相当的微粒体稳定性。