摘要 本文报道了在吡啶作为碱存在下使用K 2 S 2 O 8由N- (芳基磺酰基)苄胺合成合成有用的N-芳基磺酰亚胺的温和、操作方便且实用的方法。此外,还报道了通过与邻位取代的苯胺原位生成的N-芳基磺酰亚胺的反应,“一锅法”串联合成药学相关的N-杂环。该方案的主要特点包括使用绿色氧化剂、反应时间短(30 分钟)、免色谱分离、可扩展性和经济性,可提供N-芳基磺酰亚胺,产率高达 96%。虽然据报道使用K 2 S 2 O 8将N-芳基(苄基)胺氧化成N-芳基亚胺是有问题的,但使用K 2 S 2 O 8将N- (芳基磺酰基)苄胺氧化成N-芳基磺酰亚胺已经是有问题的。首次实现。硫酸根阴离子(SO 4 ·− )的双重作用,包括氢原子夺取(HAT)和单电子转移(SET),被认为参与了合理的反应机制。 贝尔斯坦 J. 组织。化学。 2023, 19, 771–777。doi:10.3762/bjoc.19
METHOD OF INHIBITING APOLIPOPROTEIN-E EXPRESSION WHILE INCREASING EXPRESSION OF AT LEAST ONE OF LDL-RECEPTOR PROTEIN OR ABCA1 PROTEIN COMPRISING ADMINISTERING A SMALL COMPOUND
申请人:California State University, Fresno
公开号:US20180093960A1
公开(公告)日:2018-04-05
This invention offers an effective method of decreasing expression of apolipoprotein E and increasing expression of at least one of either LDL-receptor protein or AbcA1 protein including selecting mammalian cells expressing apoE and at least one of either LDL-receptor protein or AbcA1 protein, contacting the mammalian cell with an effective amount of a compound having general formula (I) or general formula (II) in an amount sufficient to decrease expression of the apoE and increase expression of at least one of the LDL-receptor protein or the AbcA1 protein in the mammalian cell.
Keteniminium‐Driven Umpolung Difunctionalization of Ynamides
作者:Shubham Dutta、Shengwen Yang、Rajeshwer Vanjari、Rajendra K. Mallick、Vincent Gandon、Akhila K. Sahoo
DOI:10.1002/anie.201915522
日期:2020.6.26
synthesis of novel triaryl‐substituted enamides is described. This transformation represents the first example of an umpolung regioselective unsymmetrical syn ‐1,2‐diarylation/aryl‐olefination of ynamides. The aryl moieties of the diazonium salt (electrophile) and boronic acid (nucleophile) are explicitly incorporated in the electrophilic α‐ and nucleophilic β‐position, respectively, of the ynamide
The present invention provides a compound of formula I;
a method for manufacturing the compounds of the invention, and its therapeutic uses. The present invention further provides a combination of pharmacologically active agents and a pharmaceutical composition.
Dynamic Kinetic Resolution of α-Trifluoromethyl Hemiaminals without α-Hydrogen via NHC-Catalyzed <i>O</i>-Acylation
作者:Yuan-Yuan Gao、Chun-Lin Zhang、Lei Dai、You-Feng Han、Song Ye
DOI:10.1021/acs.orglett.1c00024
日期:2021.2.19
Following the well-recognized dynamickineticresolution (DKR) of hemiaminals with α-hydrogen under lipase and chiral DMAP catalysis, the unprecedented DKR of hemiaminals without α-hydrogen was developed via N-heterocyclic carbene catalyzed O-acylation of 3-hydroxy-3-trifluoromethylbenzosultams. The racemic hemiaminals without α-hydrogen were effectively racemized and differentiated by chiral NHCs
Ring Expansion and 1,2‐Migration Cascade of Benzisoxazoles with Ynamides: Experimental and Theoretical Studies
作者:Rajeshwer Vanjari、Shubham Dutta、B. Prabagar、Vincent Gandon、Akhila K. Sahoo
DOI:10.1002/asia.201901251
日期:2019.12.13
α-imino vinylic gold intermediate, and 1,2-migration of the sulfonamide motif to the masked carbene center to deliver the respective ring-expanded benzo[e][1,3]oxazine of predominant E configuration. A trapping experiment justifies the participation of the α-imino masked gold carbene. DFT computations also support the hypothesized mechanism and rationalize the product stereoselectivity.