Results 81 to 90 of about 12,444 (248)

CHROMONES FROM ACYLSALICYLIC ACIDS [PDF]

Chemistry Letters, 1983
Abstract Acylsalicylic acids 1 can be converted by reaction with N-Phenylketeniminylidene triphenylphosphorane 2 into chromones 6 or 7.
Hans Jürgen Bestmann, Gerold Schade
openaire   +1 more source

Pd(II) Complexes of Schiff Base Ligands Derived From 4‐Aminoantipyrine: Synthesis, Characterization, Crystal Structure and Acute Toxicity Evaluation

ChemistrySelect, Volume 11, Issue 1, 8 January 2026.
Palladium(II) complexes (1–6) with Schiff bases (HL1–HL6) were synthesized and characterized using different spectroscopic methods. The molecular structures of ligands HL1, HL3, HL6 and complexes 1, 2, 3, 6 were determined by X‐ray diffraction analysis. The toxicity of the compounds was assessed on both plant and animal cells.
Andreea Elena Ștefan, Cristina Elena Dinu‐Pîrvu, Sergiu Shova, Ștefania Felicia Bărbuceanu, Teodora Venera Apostol, Rica Boscencu, Diana Carolina Ilieș, Mihaela Badea, Mihaela Dinu, Robert Viorel Ancuceanu, Doina Drăgănescu, Elena Pahonțu   +11 more
wiley   +1 more source

Six-membered ring systems: with O and/or S atoms [PDF]

, 2013
A large variety of publications have emerged in 2012 involving O- and S-6- membered ring systems. The increasing number of reviews and other communica- tions dedicated to natural and synthetic derivatives and their biological significance highlights ...
Abe, Abreu, Ackermann, Adcock, Albrecht, Albrecht, Allen, Anantachoke, Anxionnat, Arcadi, Archambeau, Athe, Augustine, Azevedo, Azzam, Barancelli, Barbier, Beaulieu, Beemelmanns, Bharate, Bhattacharyya, Bondalapati, Borkar, Brawn, Brimble, Bunt, Byers, Cai, Cai, Cannon, Cao, Celindro, Chaładaj, Chemler, Chen, Chen, Chen, Chen, Chianese, Chinnagolla, Choi, Chuang, Clarisse, Cook, Cui, Cui, Cui, Das, Dentel, Desimoni, Dias, Dobish, Dong, Donner, dos Santos, Du, Elinson, Enders, Enders, Essig, Fan, Fei, Ferguson, Fernandes, Finefield, Fromentin, Fujioka, Fujita, Fujiwara, Fuwa, Gao, Gao, Gao, Ge, Ghassamipour, Ghebreghiorgis, Ghorai, Ghosh, Ghosh, Ghosh, Ghosh, Giun, Gliszczynska, Goel, Grandane, Gregg, Grove, Gunduz, Guo, Hamilton, Han, Handa, Hintermann, Ho, Hong, Hong, Hornillos, Hossaini, Hou, Hu, Hu, Hu, Hu, Huang, Hung, Huple, Hussain, Iaroshenko, Indukuri, Jacobsen, Jacolot, Jepsen, Jiang, Jung, Kalaitzakis, Kamalraja, Kamat, Karami, Karmakar, Kaur, Kavala, Kazemi, Khaligh, Khan, Khoshkholgh, Khurana, Khurana, Kim, Kim, Kim, Kim, Kitamura, Kobayashi, Kobayashi, Kolla, Komeyama, Kraus, Kraus, Krishna, Kuarm, Kueny-Stotz, Kumar, Kumar, Kumar, Kumar, Kuntiyong, Lee, Levchenko, Li, Li, Li, Li, Li, Li, Li, Lian, Little, Liu, Liu, Liu, Liu, Liu, Liu, Liu, Lu, Lu, Lv, Madabhushi, Mahendar, Maiti, Majetich, Majetich, Majumdar, Majumdar, Majumdar, Majumdar, Mallik, Masters, Miege, Miller, Minami, Miyaoka, Mo, Mo, Mohapatra, Mondal, Mosey, Motamedi, Motti, Mulakayala, Mull, Murai, Nagarapu, Nagasawa, Nair, Nandaluru, Nemati, Nemecek, Nibbs, Nichols, Nishina, Nising, Noda, Olomola, Osyanin, Osyanin, Palanichamy, Pan, Pandit, Parida, Parmar, Parrish, Parthasarathy, Parvatkar, Patil, Pavan, Peh, Pei, Pei, Pei, Pei, Pesyan, Petrone, Pilkington, Pillay, Pina, Pinto, Pisani, Prust, Rad-Moghadam, Raghavan, Rama, Ramachary, Ramachary, Ramachary, Ramesh, Rasolofonjatovo, Raubenheimer, Reddy, Reddy, Reddy, Reddy, Reddy, Reddy, Revanna, Romanov-Michailidis, Roscales, Rubush, Rueping, Rueping, Rueping, Safari, Saha, Saha, Sajna, Samai, Sashidhara, Sashidhara, Sashidhara, Schmidt, Schmidt, Scott, Shaikh, Sharma, Sharma, Sharma, Shekhar, Shekhar, Shen, Shi, Shyshkina, Singh, Singh, Singh, Soeta, Soleimani, Song, Song, Srinivas, Srinivas, Stadlbauer, Sudheedran, Sun, Sun, Sun, Suresh, Szostak, Takaki, Takii, Talavera, Tanaka, Tang, Terada, Thirunavukkarasu, Tieze, Tieze, Tisseh, Tisseh, Tokunou, Tomas, Tomas, Tyrrell, Uyanik, Vadola, VanVeller, Vaz, Verma, Verma, Vidyasagar, Vu, Vyas, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Ward, Wei, Willis, Wilson, Wu, Wu, Xie, Xie, Xu, Yadav, Yadav, Yadav, Yadlapalli, Yamuna, Yang, Yang, Yang, Yang, Yang, Yang, Yao, Yin, Yoshida, Yu, Zak, Zhang, Zhang, Zhang, Zhang, Zhang, Zhao, Zhao, Zhao, Zheng, Zhou, Zhu, Zhu, Zurwerra, Zíñiga, Žádný   +360 more
core   +1 more source

The Association Between Use of Inhaled Corticosteroids and Long‐Acting Beta2‐Agonists During Pregnancy and Adverse Fetal Outcomes

Respirology, Volume 31, Issue 1, Page 32-41, January 2026.
This study updated safety evidence on ICS and LABA use in pregnant women with asthma. After adjusting confounders, there was no association between ICS or LABA use and adverse fetal outcomes. However, high‐dose ICS exposure was associated with a higher risk of congenital anomalies among ICS users.
Yea‐Chwen Wu, I‐Te Wang, Hsin‐Yi Huang, Chung‐Hsuen Wu   +3 more
wiley   +1 more source

Chromones as versatile building blocks in cycloaddition reactions [PDF]

, 2017
4H-Chromen-4-ones commonly referred as chromones are a class of naturally occurring heterocyclic compounds implicated in a series of biological and pharmacological properties.[1] It is also an interesting scaffold involved in a range of chemical ...
Albuquerque, Hélio, Cavaleiro, José, Santos, Clementina M.M., Silva, Artur   +3 more
core   +1 more source

Source‐Dependent Chemical Variability of Saposhnikoviae Radix Extracts Modulates Their Biotransformation in the Simulated Gastrointestinal System

Journal of Food Biochemistry, Volume 2026, Issue 1, 2026.
Saposhnikoviae Radix extract (SRE) is an aqueous extract of Saposhnikoviae Radix, which exhibits anti‐inflammatory, analgesic, and antitumor actions in addition to its culinary and medicinal properties. In this study, an innovative analytical strategy was employed, combining the Simulator of the Human Intestinal Microbial Ecosystem (SHIME) and UHPLC‐Q ...
Yijun Wang, Wei Zhu, Shuo Chai, Hangming Li, Guoqing Jin, Chang Xu, Ping Huang, Massimo Marzorati, Hongmei Chen, Xiaoyong Zhang, Muhammad Sajid Arshad   +10 more
wiley   +1 more source

A catalyst-free multicomponent domino sequence for the diastereoselective synthesis of (E)-3-[2-arylcarbonyl-3-(arylamino)allyl]chromen-4-ones

Beilstein Journal of Organic Chemistry, 2014
The three-component domino reactions of (E)-3-(dimethylamino)-1-arylprop-2-en-1-ones, 3-formylchromone and anilines under catalyst-free conditions afforded a library of novel (E)-3-(2-arylcarbonyl-3-(arylamino)allyl)-4H-chromen-4-ones in good to ...
Pitchaimani Prasanna, Pethaiah Gunasekaran, Subbu Perumal, J. Carlos Menéndez   +3 more
doaj   +1 more source

Applications of N─F─Based Reagents in the Synthesis of Organochalcogen Compounds

Asian Journal of Organic Chemistry, Volume 14, Issue 12, December 2025.
Herein, we provide a comprehensive review of recent advances in synthetic strategies to access organochalcogen‐decorated compounds using N─F reagents as efficient oxidants for converting chalcogen–chalcogen bonds into electrophilic chalcogen‐based species.
Thiago Anjos, Mateus W. Rambo, Damiano Tanini, Alan Diego C. Santos, Ricardo F. Schumacher, Filipe Penteado   +5 more
wiley   +1 more source

One Pot and Metal-Free Approach to 3-(2-Hydroxybenzoyl)-1-aza-anthraquinones

Molecules, 2019
Herein, a direct strategy to synthesize 3-(2-hydroxybenzoyl)-1-aza-anthraquinones with excellent efficiency, mild conditions, and benign functional group compatibility was reported.
Jiaqi Yuan, Qian He, Shanshan Song, Xiaofei Zhang, Zehong Miao, Chunhao Yang   +5 more
doaj   +1 more source

Toxic Evaluations of Calea phyllolepis Extracts Standardized on 6‐epi‐β‐Verbesinol Coumarate and Its In Silico Prediction of the Toxicity

Chemistry &Biodiversity, Volume 22, Issue 12, December 2025.
In vivo and in silico toxicological effects of Calea phyllolepis extracts Standardized on 6‐epi‐β‐Verbesinol Coumarate. ABSTRACT Medicinal plants are traditionally used in folk medicine. Still, there is a misconception about the safety/efficacy of natural treatments, which results in few studies on the toxic, genotoxic, and mutagenic potential of ...
Suele Bierhals Vencato, Guilherme Borsoi, Cleverson Feistel, Mariele Feiffer Charão, Angélica Rocha Joaquim, Jaqueline Nascimento Picada, Alexandre de Barros Falcão Ferraz   +6 more
wiley   +1 more source