Results 61 to 70 of about 1,887 (208)

Optimized spirooxindole-pyrazole hybrids targeting the p53-MDM2 interplay induce apoptosis and synergize with doxorubicin in A549 cells

open access: yesScientific Reports, 2023
Recently, cancer research protocols have introduced clinical-stage spirooxindole-based MDM2 inhibitors. However, several studies reported tumor resistance to the treatment.
Mohammad Shahidul Islam   +11 more
doaj   +1 more source

Recent Advances in Organocatalysis [PDF]

open access: yes, 2021
Organocatalysis has recently attracted enormous attention as green and sustainable catalysis. It was realized as a fundamental field providing wide families of catalysts for important organic transformations.

core   +1 more source

Catalytic Enantioselective Construction of Quaternary Stereocenters: Assembly of Key Building Blocks for the Synthesis of Biologically Active Molecules [PDF]

open access: yes, 2015
The ever-present demand for drugs with better efficacy and fewer side effects continually motivates scientists to explore the vast chemical space. Traditionally, medicinal chemists have focused much attention on achiral or so-called “flat” molecules ...
Han, Seo-Jung   +3 more
core   +1 more source

TP53 mutant MDM2-amplified cell lines selected for resistance to MDM2-p53 binding antagonists retain sensitivity to ionizing radiation [PDF]

open access: yes, 2016
Non-genotoxic reactivation of the p53 pathway by MDM2-p53 binding antagonists is an attractive treatment strategy for wild-type TP53 cancers. To determine how resistance to MDM2/p53 binding antagonists might develop, SJSA-1 and NGP cells were exposed to ...
Bennaceur, Karim   +14 more
core   +3 more sources

The Synthesis of 3-Spirooxindole Derivatives. IV. The Conversion of 3-Spirooxindole to Indole Derivative.

open access: yesChemical and Pharmaceutical Bulletin, 1963
The conversion of 1-methylspiro (indoline-3, 1'-indolizine)-2-one to 12-methyl-1, 2, 3, 4, 6, 7, 12, 12b-octahydroindolo [2, 3-a] quinolizine is described as a preliminary for the chemical correlation of N-methylrhynchophyllane with N-methyldihydrocorynantheane.
T, OISHI, S, MAENO, Y, BAN
openaire   +3 more sources

Aza-Diels-Alder reaction of both electron-deficient azoalkenes with electron-deficient 3-phencaylideneoxindoles and 3-aryliminooxindol-2-ones

open access: yesGreen Synthesis and Catalysis, 2021
An uncommon aza-Diels-Alder reaction of electron-deficient azoalkenes and electron-deficient 3-phenacylideneoxindoles was successfully developed for convenient construction of the heterocyclic spirooxindoles.
Wenjing Shi, Jing Sun, Chao-Guo Yan
doaj   +1 more source

Michael Addition-Initiated Sequential Reactions from 1,3-Dicarbonyls for the Synthesis of Polycyclic Heterocycles

open access: yes, 2013
International audienceThis review aims to highlight the most significant recent developments on synthetic strategies involving consecutive, domino and multicomponent reactions featuring a Michael addition-initiating step for the synthesis of polycyclic ...
Bonne, Damien   +4 more
core   +3 more sources

Primary-tertiary diamine-catalyzed Michael addition of ketones to isatylidenemalononitrile derivatives

open access: yesBeilstein Journal of Organic Chemistry, 2014
Simple primary-tertiary diamines easily derived from natural primary amino acids were used to catalyze the Michael addition of ketones with isatylidenemalononitrile derivatives. Diamine 1a in combination with D-CSA as an additive provided Michael adducts
Akshay Kumar, Swapandeep Singh Chimni
doaj   +1 more source

Синтез і антимікробна активність гексаметилен-N-малеїнімідопохідних спіроіндол- 3,3’-піроло[3,4-с]піролу [PDF]

open access: yes, 2017
Aim. To synthesize a series of hexamethylene-N-maleinimidospiroindole-3,3’-pyrrolo[3,4-c]pyrrole derivatives, study the antimicrobial activity of the compounds synthesized and compare their antimicrobial activity with the antimicrobial activity of the ...
Filimonova, N. I.   +4 more
core   +2 more sources

The regioselective synthesis of spirooxindolo pyrrolidines and pyrrolizidines via three-component reactions of acrylamides and aroylacrylic acids with isatins and α-amino acids

open access: yesBeilstein Journal of Organic Chemistry, 2014
The regioselective three-component condensation of azomethine ylides derived from isatins and α-amino acids with acrylamides or aroylacrylic acids as dipolarophiles has been realized through a one-pot 1,3-dipolar cycloaddition protocol.
Tatyana L. Pavlovskaya   +6 more
doaj   +1 more source

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