B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>-Catalyzed Highly Chemoselective Reduction of Isatins: Synthesis of Indolin-3-ones and Indolines
作者:Hyojin Jeong、Nara Han、Dong Wook Hwang、Haye Min Ko
DOI:10.1021/acs.orglett.0c03150
日期:2020.10.16
A chemo- and site-selective reduction reaction of isatin derivatives using catalystB(C6F5)3 and hydrosilanes is described. This transformation is operationally simple, proceeds under mild conditions, and is resistant to various functional groups. Thus, this efficient reaction using a combination of B(C6F5)3 and BnMe2SiH or B(C6F5)3 and Et2SiH2 could potentially be utilized to produce various indolin-3-ones
描述了使用催化剂B(C 6 F 5)3和氢硅烷的靛红衍生物的化学和位置选择性还原反应。该转化操作简单,在温和条件下进行,并且抗各种官能团。因此,结合使用B(C 6 F 5)3和BnMe 2 SiH或B(C 6 F 5)3和Et 2 SiH 2的有效反应可以潜在地用于生产各种吲哚3-3-酮和二氢吲哚。无需多步程序和金属催化条件。
PPh<sub>3</sub> Mediated Reductive Annulation Reaction between Isatins and Electron Deficient Dienes to Construct Spirooxindole Compounds
A PPh3 mediated reductive annulation reactionbetweenisatins and 4,4-dicyano-2-methylenebut-3-enoates was developed. The reaction provided an alternative method for constructing five- and three-membered all-carbon spirooxindole compounds. Lithium chloride as a Lewis acid played a key role in the synthesis of spirocyclopentenyl oxindole compounds.
Substituted indole compounds and methods of their use
申请人:Geron Corporation
公开号:US06372742B1
公开(公告)日:2002-04-16
5-(3-Isatinylidinyl)thiazolidineones and 3-(thiazolidinon-5-yl)indoles compounds, compositions, and methods of inhibiting telomerase activity in vitro and treatment of telomerase mediated conditions or diseases ex vivo and in vivo are provided. The methods, compounds and compositions of the invention may be employed alone, or in combination with other pharmacologically active agents in the treatment of conditions or diseases mediated by telomerase activity, such as in the treatment of cancer. Also disclosed are novel methods for assaying or screening for inhibitors of telomerase activity.
본 발명은 인돌린 유도체 및 이의 제조 방법에 대한 것으로, 아이사틴과 하이드로실레인을 붕소 촉매 하에서 인돌린 유도체를 합성한다. 특히, 아이사틴의 반응성이 적은 2번 탄소의 카르보닐기를 환원하여 인돌린-3-온 유도체를 한 단계로 합성할 수 있다. 또한, 다양한 치환기를 가진 신규한 인돌린 유도체를 합성할 수 있어, 이를 다양한 분야에 응용할 수 있다.
Modified Chemoselective Reduction and Consecutive Regioselective Deuteration Reaction Catalyzed by B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>
作者:Se Yeon Park、Jaehwan Kim、Haye Min Ko
DOI:10.1021/acs.joc.2c02137
日期:2023.2.17
derivatives using catalystB(C6F5)3, benzyldimethylsilane, and H2O is described. Notably, a small amount of water is shown to be a highlyeffectivereaction promoter that decreases the reaction time and temperature for the synthesis of indolin-3-ones. Moreover, using method, excellent deuterium incorporation is achieved via the catalytic α-deuteration of indolin-3-ones using B(C6F5)3 and D2O.
描述了使用催化剂 B(C 6 F 5 ) 3、苄基二甲基硅烷和 H 2 O对靛红衍生物进行有效的化学选择性还原。值得注意的是,少量的水被证明是一种高效的反应促进剂,可以减少合成三氢吲哚的反应时间和温度。此外,使用方法,通过使用 B(C 6 F 5 ) 3和 D 2 O对吲哚啉-3-酮进行催化 α-氘化,实现了优异的氘结合。