Results 71 to 80 of about 1,535,483 (232)

Enantioselective Solvent-Free Synthesis of 3-Alkyl-3-hydroxy-2-oxoindoles Catalyzed by Binam-Prolinamides

Molecules, 2015
BINAM-prolinamides are very efficient catalyst for the synthesis of non-protected and N-benzyl isatin derivatives by using an aldol reaction between ketones and isatins under solvent-free conditions.
Abraham Bañn-Caballero, Jesús Flores-Ferrándiz, Gabriela Guillena, Carmen Nájera   +3 more
doaj   +1 more source

Phase‐Transfer‐Catalyzed Interrupted Barton–Zard Reaction Between Electron‐Deficient Indoles and Benzophenone‐Derived Isocyanides

European Journal of Organic Chemistry, Volume 29, Issue 19, 22 May 2026.
A cascade reaction under phase‐transfer conditions between 3‐nitro indoles and isocyanomethylene dibenzenes affords the construction of pyrrolo[3,4‐b]indole cores. Control experiments provide insight into moderate product yields and clarify why the reaction is not amenable to asymmetric induction. A cascade reaction enabling the construction of pyrrolo[
Ana Mikleušević, Ines Bašić, Mateja Matišić, Josip Rešetar, Matija Gredičak   +4 more
wiley   +1 more source

Iodine-catalyzed Synthesis, Antibacterial, and Antioxidant Activity of Isatin Derivatives

Indonesian Journal of Chemistry
Isatin is a unique compound with many bioactivities such as antiviral, anti-HIV, antitumor, anti-inflammatory, anticonvulsant, and antifungal. In this study, isatin derivatives were synthesized with an iodine catalyst and tested for antibacterial and ...
Antonius Herry Cahyana, Agus Rimus Liandi, Yosua Ongkowidjawa   +2 more
doaj   +1 more source

Antidiabetic and Cytotoxicity Studies of Novel Quinazolinone–1,3,4‐Thiadiazole Molecular Hybrids

Chemistry &Biodiversity, Volume 23, Issue 5, May 2026.
ABSTRACT In the treatment of diabetes mellitus (DM), inhibition of carbohydrate‐hydrolysing enzymes, such as α‐amylase, has emerged as a promising therapeutic strategy. In the present study, a series of quinazolinone‐1,3,4‐thiadiazole molecular hybrids were designed, synthesized and biologically evaluated for their antidiabetic potential.
Prishani Kisten, Pule Seboletswe, Gobind kumar, Nontobeko Gcabashe, Neha Manhas, Ankit, Almahi Idris, Md. Shahidul Islam, René Khan, Parvesh Singh   +9 more
wiley   +1 more source

Synthesis of Spiro Heterocyclic Compounds

E-Journal of Chemistry, 2010
Reaction of isatin with acetophenone derivatives gave 3-hydroxy-3-phenacyl oxindole derivatives (II), dehydration of (II) gave 3-phenacylidene-2-indolinone derivatives (III).
Mohamed N. Ibrahim, Mohamed F. El-Messmary, Mohamed G. A. Elarfi   +2 more
doaj   +1 more source

Antidiabetic Evaluation of Thiosemicarbazone Analogs Through α‐Amylase Inhibition Complemented With Computational Studies

Chemistry &Biodiversity, Volume 23, Issue 5, May 2026.
Thiosemicarbazones were evaluated for antidiabetic activity via α‐amylase inhibition. Compound 6g showed two‐fold greater potency than acarbose. Benzaldehyde‐ and ketone‐derived analogues were most active, while isatin and furan derivatives were less effective. Several compounds displayed antioxidant activity. Docking highlighted hydrogen bonding and π–
Neha Manhas, Gobind Kumar, Ankit, Nagaraju Kerru, Pule Seboletswe, Nontobeko Gcabashe, Almahi Idris, Md. Shahidul Islam, Talent Makhanya, Parvesh Singh   +9 more
wiley   +1 more source

Characterization of the Orphan Cytochrome P450 CYP107J1 From Bacillus subtilis Through Peroxygenase Activity Engineering

Microbial Biotechnology, Volume 19, Issue 5, May 2026.
The orphan cytochrome P450 CYP107J1 with unknown redox partners was rationally modified into H2O2‐driven form. The QE (E251Q/T252E) mutant produced valuable chemicals by simply mixing the enzyme with substrate and H2O2. ABSTRACT Cytochrome P450 monooxygenases (P450s) not only play many physiological roles in oxidative metabolism but are also promising ...
Hideki Kato, Takafumi Hashimoto, Tuhin Das, Daniel Z. Doherty, Stephen G. Bell, Toshiki Furuya   +5 more
wiley   +1 more source

Metal‐Catalyzed C(sp2)–H Bond Functionalization of Indolinone‐ and Indanone‐Type Chemical Platforms En Route Toward Late‐Stage Functionalization

Advanced Synthesis &Catalysis, Volume 368, Issue 8, 15 April 2026.
An in‐depth survey dealing with the aromatic C—H bond functionalization of biologically‐relevant scaffolds featuring the indolinone and indanone core is discussed as they are unique aromatic scaffolds that are 1,2‐doubly fused with small five‐membered rings.
Vanessa Delahaye, Sylvie Dérien, Mathieu Achard, Rafael Gramage‐Doria   +3 more
wiley   +1 more source

A Series of Isatin-Hydrazones with Cytotoxic Activity and CDK2 Kinase Inhibitory Activity: A Potential Type II ATP Competitive Inhibitor

Molecules, 2020
Isatin derivatives potentially act on various biological targets. In this article, a series of novel isatin-hydrazones were synthesized in excellent yields.
Huda S. Al-Salem, Md Arifuzzaman, Hamad M. Alkahtani, Ashraf N. Abdalla, Iman S. Issa, Aljawharah Alqathama, Fatemah S. Albalawi, A. F. M. Motiur Rahman   +7 more
doaj   +1 more source

Harnessing Toluene Solvent as a Reactant: Regioselective Benzyl Radical Addition to Multi‐π 1,5‐Enynes in a Copper‐Catalyzed Cascade to Indenes

Chemistry – A European Journal, Volume 32, Issue 14, 15 April 2026.
A copper‐catalyzed three‐component radical cascade of 1,5‐enynes with toluene and benzoic acids enables regioselective benzyl radical addition to multi‐Π systems, efficiently delivering polysubstituted indenes from an abundant solvent feedstock. ABSTRACT C─H activation of toluene generates a benzyl radical that undergoes C─C coupling, converting an ...
Saideh Rajai‐Daryasarei, Fatemeh Chahardehi, Mohammad Mahdi Sharifani, Morteza Jamshidi, Robert Stranger, Frank Rominger, Alireza Ariafard, Saeed Balalaie   +7 more
wiley   +1 more source