Synthesis of Oxindolyl Pyrazolines and 3-Amino Oxindole Building Blocks via a Nitrile Imine [3 + 2] Cycloaddition Strategy
摘要:
The [3 + 2] dipolar cycloaddition reaction of nitrite imines with 3-alkylidene oxindoles is described. The pyrazoline spiroadducts were obtained in high yields and with excellent regio- and diastereoselectivities. These spirocyclic intermediates have been elaborated to synthetically versatile 3-amino oxindole building blocks such as beta-amino nitrile, 1,3-diamine, and pyrrolo[2,3-b]indoline derivatives.
Reactivity toward Thiols and Cytotoxicity of 3-Methylene-2-oxindoles, Cytotoxins from Indole-3-acetic Acids, on Activation by Peroxidases
作者:Lisa K. Folkes、Sharon Rossiter、Peter Wardman
DOI:10.1021/tx025521+
日期:2002.6.1
Oxidation of indole-3-acetic acid and itsderivatives by peroxidases such as that from horseradish produces many products, including 3-methylene-2-oxindoles. These have long been associated with biological activity, but their reactivity has not been characterized. We have previously demonstrated the potential value of substituted indole aceticacids and horseradish peroxidase as the basis for targeted
吲哚-3-乙酸及其衍生物被辣根等过氧化物酶氧化后,会产生许多产物,包括3-亚甲基-2-氧吲哚。长期以来,这些都与生物活性有关,但尚未对其反应性进行表征。以前我们已经证明了取代的吲哚乙酸和辣根过氧化物酶作为靶向癌症治疗的基础的潜在价值,因为当观察到高细胞毒性时,化合物被氧化之前具有低细胞毒性。前药和酶的结合会消耗细胞内的硫醇。在这项研究中,合成了在3位,4位,5位或6位被甲基,F或Cl取代的3-亚甲基-2-氧吲哚及其衍生物,它们对代表性的巯基亲核试剂(谷胱甘肽,半胱氨酸,和半胱氨酸肽)使用停止流动力学分光光度法测量。在25°C的pH 7.4下,速率常数在大约2 x 10(3)到2 x 10(4)M(-)(1)s(-)(1)的范围内,这意味着数十倍的寿命这些亚甲基羟吲哚在细胞环境中的传播时间为毫秒,扩散距离为几微米。不出所料,卤素取代降低了辣根过氧化物酶处理中亚甲基羟吲哚的生成速率。使用中国仓
[EN] A SHORT PROCESS FOR THE PREPARATION OF ZIPRASIDONE AND INTERMEDIATES THEREOF<br/>[FR] PROCÉDÉ COURT POUR LA PRÉPARATION DE ZIPRASIDONE ET DE SES INTERMÉDIAIRES
申请人:ARCH PHARMALABS LTD
公开号:WO2012020424A1
公开(公告)日:2012-02-16
A process for the preparation of oxindole derivative (Ziprasidone hydrochloride) of formula (I) comprising reacting compound of formula (II) with metal or metal compound mineral acid to give compound of formula (III) in a single step which is converted into compound of formula IV which is a key intermediate for the preparation of compound of compound of formula (I).
[EN] METHOD FOR PREPARING 2-INDOLINOSPIRONE COMPOUND AND INTERMEDIATE THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN COMPOSÉ DE 2-INDOLINOSPIRONE ET INTERMÉDIAIRE DE CELUI-CI
申请人:ASCENTAGE PHARMA SUZHOU CO LTD
公开号:WO2021004516A1
公开(公告)日:2021-01-14
Disclosed is a method for preparing 2-indolinospirone compound and intermediate thereof, specifically disclosed is a method for preparing a compound of formula 5. The method is relatively simple and has high stereoselectivity and yield.
The present disclosure provides a method for efficiently producing and providing compounds having a spirooxindole skeleton, for example compounds having a spirooxindole skeleton and having antitumor activity that inhibit the interaction between Mdm2 protein and p53 protein, or intermediates thereof, using an asymmetric catalyst. Compounds having optically active tricyclic dispiroindole skeletons are obtained through catalytic asymmetric 1,3-dipolar cycloaddition reactions using ketimine as a reaction substrate and using a chiral ligand and a Lewis acid.