Results 11 to 20 of about 3,529 (194)

Photochemical Deracemization of Chromanes and its Application to the Synthesis of Enantiopure Bioactive Compounds. [PDF]

Angew Chem Int Ed Engl
Various substituted chromane‐2‐carboxamides were successfully deracemized by employing a chiral benzophenone (BP, 10 mol%) as photocatalyst and an achiral thiol as additive (20 mol%). The method was applied to the concise enantioselective synthesis of five active pharmaceutical ingredients.
Ghosh B, Iglhaut M, Babushkina D, Pauls M, Bannwarth C, Bach T.   +5 more
europepmc   +3 more sources

Synthesis of Benzopyrans and Quinolines with Nitrogenated Chain and Their Cytotoxicity Against Human Cancer Cell Lines. [PDF]

ChemMedChem
Natural products and/or their structural analogs represent the greatest number of approved small‐molecules as antitumor agents. We report the synthesis of 2‐propanamide and 2‐propanamine dihydrobenzopyrans and 2‐ and 2,3‐disubstituted quinolines to evaluate their cytotoxicity against human A549 (lung), A2058 (melanoma), HepG2 (liver), MCF‐7 (breast ...
Álvaro BS, Mackenzie TA, Ramos MC, García A, Villarroel-Vicente C, Vila L, Tormo JR, Cortes D, Cabedo N.   +8 more
europepmc   +2 more sources

Sustainable synthesis of benzopyran derivatives catalyzed by MgO nanoparticles: Spectral, DFT and TEM analysis

Results in Chemistry, 2023
In current work, a magnesium oxide nanocatalyst was synthesized via greener route using aloe-vera plant leaf extracts as a reducing and stabilizing agent to construct MgO nanoparticle.
Har Lal Singh, Mamta Chahar, Sangeeta, Saloni Sahal, Sarita Khaturia   +4 more
doaj   +1 more source

Kinetic Resolution in Asymmetric Epoxidation using Iminium Salt Catalysis [PDF]

, 2013
The first reported examples of kinetic resolution in epoxidation reactions using iminium salt catalysis are described, providing up to 99% ee in the epoxidation of racemic cis ...
Allin, Steven M., Appleby, Louise F., Buckley, Benjamin R., Bulman Page, Philip C., Chan, Yohan, Day, David P., Mckenzie, Michael J., Slawin, Alexandra M. Z.   +7 more
core   +1 more source

Mechanism and Application of Baker–Venkataraman O→C Acyl Migration Reactions [PDF]

, 2014
This literature review focuses on the O→C acyl migration of aryl esters to yield the corresponding 1,3-dicarbonyl products—a reaction known as the Baker–Venkataraman rearrangement—and outlines their subsequent transformations.
Ameen, Dana, Snape, Timothy James
core   +1 more source

Alkaloid and benzopyran compounds of Melicope latifolia fruit exhibit anti-hepatitis C virus activities

BMC Complementary Medicine and Therapies, 2021
Background New agents for developing alternative or complementary medicine to treat the hepatitis C virus (HCV) are still needed due to high rates of HCV infection globally and the current limitations of available treatments.
Aty Widyawaruyanti, Mulyadi Tanjung, Adita Ayu Permanasari, Ratih Saputri, Lidya Tumewu, Myrna Adianti, Chie Aoki-Utsubo, Hak Hotta, Achmad Fuad Hafid, Tutik Sri Wahyuni   +9 more
doaj   +1 more source

An overview of structure-based activity outcomes of pyran derivatives against Alzheimer’s disease

Saudi Pharmaceutical Journal, 2023
Pyran is a heterocyclic group containing oxygen that possesses a variety of pharmacological effects. Pyran is also one of the most prevalent structural subunits in natural products, such as xanthones, coumarins, flavonoids, benzopyrans, etc. Additionally
Faisal A. Almalki
doaj   +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
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Antimicrobial activities of marine fungi from Malaysia [PDF]

, 2010
Copyright 2011 Elsevier B.V., All rights reserved.Peer reviewedPublisher ...
Alias, S.A., Awang, K., Ebel, R., Lee, C.W., Mukhtar, M.R., Othman, N.A., Zainuddin, N.   +6 more
core   +1 more source

Crystal structure of 2-amino-4-(4-methoxyphenyl)-4H-benzo[g]chromene-3-carbonitrile

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the title compound, C21H16N2O2, the naphthalene fragment is twisted slightly, as indicated by the dihedral angle of 3.2 (2)° between the two six-membered rings. The pendant 4-methoxyphenyl ring makes a dihedral angle of 86.08 (6)° with the central six-
Joel T. Mague, Shaaban K. Mohamed, Mehmet Akkurt, Sabry H. H. Younes, Mustafa R. Albayati   +4 more
doaj   +1 more source