Results 101 to 110 of about 31,731 (271)

Detection of Testosterone Esters in Urine: Evidence of Trace‐Level Detectability in Doping Control Samples

Drug Testing and Analysis, EarlyView.
An ultrasensitive LC‐MS/MS method for detecting testosterone esters (T‐esters) in urine at sub–pg/mL levels is presented. This approach, employing Girard P derivatization, provides the first evidence of T‐esters' trace‐level detectability in human urine.
Daniel Pecher, Guro Forsdahl, Biljana Stojanovic, Günter Gmeiner   +3 more
wiley   +1 more source

Chelating Picolinaldehyde Hydrazone Amides as Protecting Groups for Carboxylic Acids: Orthogonal Reactivities of Hydrazone Amides and Esters in Hydrolysis

We report a chelating hydrazone amide as a protecting group for carboxylic acids. Unlike most esters, 2-picolinaldehyde hydrazone amides are stable under acidic or basic hydrolytic conditions.
Yukiho Amano (14251468), Momoka Ando (14251474), Midori Hosoi (14251471), Mayuko Toyoda (14251465), Yasuhiro Nishikawa (1652077), Osamu Hara (1652068), Daiki Mori (3612515)   +6 more
core   +1 more source

Evaluation of DNA/Chromosome Integrity and Cell Death in Human Metabolically Noncompetent and Competent Cells Exposed to N′‐(3,5‐Difluorobenzylidene)Pyridine‐4‐Carbohydrazide

Journal of Applied Toxicology, EarlyView.
ABSTRACT The N‐acylhydrazone scaffold is recognized as a privileged structure for the design of bioactive substances with increasing applications in medicinal chemistry research. Ensuring the safety of newly developed molecules is a critical step for both human health and environmental protection. Accordingly, this study aimed to evaluate the cytotoxic
Larissa Ribeiro Canuto Santos, Jéssica Natalia Barbosa de Almeida, Camila Cavalleiro Frias, Wanda Pereira Almeida, Edson Luis Maistro   +4 more
wiley   +1 more source

Hydrazone, Osazone und Hydrazonhydrate

, 1903
HYDRAZONE, OSAZONE UND HYDRAZONHYDRATE Hydrazone, Osazone und Hydrazonhydrate ([1]) Binding ( - ) Title page ([1]) Dedication ([3]) Einleitung. ([5]) Experimenteller Teil. ([11]) Section ( - ) Thesen. ( - )
Sieden, Fritz
core  

Antiplatelet and Antithrombotic Activities of Non-Steroidal Anti-Inflammatory Drugs Containing an N-Acyl Hydrazone Subunit

Molecules, 2014
Nonsteroidal anti-inflammatory drugs (NSAIDs) 1–5 containing an N-acyl hydrazone subunit were prepared and their antiplatelet and antithrombotic activities assessed in vitro and in vivo.
Rafael Consolin Chelucci, Luiz Antônio Dutra, Maria Elisa Lopes Pires, Thais Regina Ferreira de Melo, Priscila Longhin Bosquesi, Man Chin Chung, Jean Leandro dos Santos   +6 more
doaj   +1 more source

New Hydrazone Derivatives Featuring Isatin and Piperazine Moieties: Synthesis, Cytotoxicity Evaluation, and Molecular Modeling Studies

Journal of Applied Toxicology, EarlyView.
ABSTRACT In this study, ten novel compounds (IPH1–IPH10) were designed by integrating three pharmacophores (isatin, piperazine, and hydrazone) commonly found in the molecular structures of anticancer agents. The target molecules were obtained by the reaction of in‐house prepared 4‐(4‐(pyridin/pyrimidin‐2‐yl)piperazin‐1‐yl)benzohydrazide with various ...
Semiha Köprü, Münevver Baran, Miyase Gözde Gündüz, Şengül Dilem Doğan   +3 more
wiley   +1 more source

Poly(O‐Propargyl‐N‐Amino Carbamate), a Reactive Polymer to Underpin Biomedical Applications of Poly(acetylene)s

Macromolecular Rapid Communications, EarlyView.
We report here a new methodology to prepare functional poly(acetylene)s under aqueous conditions. This methodology is underpinned by poly(O‐propargyl‐N‐amino carbamate) (P1), a reactive poly(acetylene) carrying acyl hydrazines. Thus, P1 reacts with aldehydes to give functional poly(acetylene)s, including cationic, hydrophobic, and sugar‐loaded poly ...
Tom Leigh, Greta Bellio, Daniel Crisan, Amit Deb, Alba Ramil‐Bouzas, Andrey Romanyuk, Ivan Torreiro‐Leon, Ana Rey‐Rico, Paco Fernandez‐Trillo   +8 more
wiley   +1 more source

Studies on hydrazone derivatives as antifungal agents

, 2008
WOS: 000258021400004PubMed ID: 18665994The increasing clinical importance of drug-resistant fungal pathogens has urged additional need to fungal research and new antifungal compound development.
Demirci, Fatih, Özdemir, Ahmet, Turan, Gülhan, İşcan, Gökalp, Kaplancıklı, Zafer Asım   +4 more
core   +1 more source

Synthesis, Identification and Preliminary Pharmacological Evaluation of New Hydrazone and 1, 3, 4-oxadiazole Derivatives of Ketorolac

Iraqi Journal of Pharmaceutical Sciences
New series of hydrazones (3a–b) and 1, 3, 4-oxadiazole S-alkylated derivatives (5a–b) of ketorolac (NSAID) were synthesized and their structures were identified by using ATR-FT-IR and ¹HNMR spectroscopic analytical techniques.
Aliaa AL-Hashemmi, Muthanna S. Farhan
doaj   +1 more source

Aliphatic Poly(Carbonate)s with Acid Responsive Release Mechanisms for Micellar Anti‐Tumor Drug Delivery

Macromolecular Rapid Communications, EarlyView.
Micellar systems based on biodegradable aliphatic polycarbonates and acid‐responsive triggers enhance drug solubility, stability, and tumor‐selective release. This review covers micelles with acid‐cleavable drug linkages and those that disassemble via acid‐sensitive functionalities.
Adrian V. Hauck, Lutz Nuhn
wiley   +1 more source