Enantioselective synthesis of the spirotryprostatin A scaffold
摘要:
The pentacyclic spirotryprostatin scaffold embodies an oxindole with an all-carbon quaternary stereocenter. The scaffold can efficiently be accessed in a one-pot reaction sequence consisting of a highly enantioselective 1,3-dipolar cycloaddition, N-acylation of the resulting stereochemically complex 3,3'-pyrrolidinyl-spirooxindole core with Fmoc-proline and spontaneous ring closure upon N-deprotection. (C) 2011 Elsevier Ltd. All rights reserved.
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 PROCESS FOR AMIDATION OF PYRROLE CARBOXYLATE COMPOUNDS<br/>[FR] PROCÉDÉ D'AMIDATION DE COMPOSÉS DE CARBOXYLATE DE PYRROLE
申请人:SYNTHON BV
公开号:WO2011110199A1
公开(公告)日:2011-09-15
The present invention relates to a process of amidation of pyrrole carboxylate compounds, including indolone-substituted pyrrole carboxylate compounds, characterized by using a cyclic alkyltriphosphonate anhydride coupling agent of formula (4) wherein A is C1-C6 alkyl group, preferably n-propyl group and to the use of the cyclic alkyltriphosphonate anhydride coupling agent of formula (4) in making pyrrole carboxamides.
3-(4-AMIDOPYRROL-2-YLMETHYLIDENE)-2-INDOLINONE DERIVATIVES AS PROTEIN KINASE INHIBITORS
申请人:Guan Huiping
公开号:US20080045709A1
公开(公告)日:2008-02-21
The present invention provides a method to make a pyrrole substituted 2-indolinone compound of the formula
本发明提供了一种制备式中的吡咯取代的2-吲哚酮化合物的方法。
3-(4-amidopyrrol-2-ylmethylidene)-2-indolinone der derivatives as protein kinase inhibitors
申请人:Guan Huiping
公开号:US20070027149A1
公开(公告)日:2007-02-01
The present invention relates to pyrrole substituted 2-indolinone compounds and their pharmaceutically acceptable salts which modulate the activity of protein kinases and therefore are expected to be useful in the prevention and treatment of protein kinase related cellular disorders such as cancer.
An azulene compound is provided. The azulene compound has formula (I) shown below. One of R1, R2, R3, R4, R5, R6, R7, and R8 in formula (I) is a moiety of formula (II). The compound can be used to treat cancer.