Electrochemical carboxylation of benzylic carbonates was successfully performed as an alternative method for the synthesis of phenylacetic acids by using a one-compartment cell equipped with a Pt plate cathode and an Mg rod anode in CH3CN to afford the corresponding phenylacetic acids in good yields.
The visible-lightphotoredox-catalyzedcarboxylation of benzyl chlorides and bromides with CO2 has been reported. With inexpensive organic dyes as photocatalysts and amines as electron donors, this carboxylation proceeds well in the absence of sensitive organometallic reagents, transition metal catalysts, or metallic reductants. A wide range of commercially available and inexpensive benzyl halides
已经报道了用CO 2对苄基氯和溴进行可见光光氧化还原催化羧化。使用廉价的有机染料作为光催化剂和胺作为电子供体,这种羧化在没有敏感的有机金属试剂、过渡金属催化剂或金属还原剂的情况下进行得很好。范围广泛的可商购且廉价的苄基卤化物经过这种羧化作用以中等至高产率产生有价值的芳基乙酸,包括几种药物分子和药物前体。此外,该反应具有温和的反应条件(1 个大气压的 CO 2和室温)、广泛的底物范围、良好的官能团耐受性、易于扩展和低催化剂负载,从而为芳基乙酸的组装提供了一种有效的方法。
Novel Terminal Bipheny-Based Diapophytoene Desaturases (CrtN) Inhibitors as Anti-MRSA/VISR/LRSA Agents with Reduced hERG Activity
CrtN has been identified as an attractive and druggable target for treating pigmented Staphylococcus aureus infections. More than 100 new compounds were synthesized, which target the overwhelming the defects of the CrtN inhibitor 1. Analogues 23a and 23b demonstrated a significant activity against pigmented S. aureus Newman and 13 MRSA strains (IC50 = 0.02-10.5 nM), along with lower hERG inhibition (IC50 > 30 mu M, similar to 10-fold decrease in comparison with 1). Furthermore, 23a and 23b were confirmed to reduce the staphylococcal load in the kidney and heart in a mouse model with normal treatment deeper than pretreatment ones, comparable even with vancomycin and linezolid. Remarkably, 23a could strongly block the pigment biosynthesis of these nine multidrug-resistant MRSA strains, including excellent activity against LRSA strains and VISA strains in vivo, and all of which demonstrated that 23a has a huge potential against intractable MRSA, VISA, and LRSA issues as a therapeutic drug.