Results 131 to 140 of about 44,043 (291)

Synthesis of spiroindenopyridazine-4H-pyran derivatives using Cr-based catalyst complexes supported on KCC-1 in aqueous solution

, 2018
Rahele Zhiani, Seyed Mohsen Sadeghzadeh, Shokufe Emrani   +2 more
openalex   +2 more sources

RIFM fragrance ingredient safety assessment, 3,6-dihydro-4-methyl-2-phenyl-2H-pyran, CAS Registry number 60335-71-9

, 2020
A.M. Api, D. Belsito, S. Biserta, D. Botelho, M. Bruze, G.A. Burton, J. Buschmann, M.A. Cancellieri, M.L. Dagli, M. Date, W. Dekant, C. Deodhar, A.D. Fryer, S. Gadhia, L. Jones, K. Joshi, A. Lapczynski, M. Lavelle, D.C. Liebler, M. Na, D. O’Brien, A. Patel, T.M. Penning, G. Ritacco, F. Rodríguez-Ropero, J. Romine, N. Sadekar, D. Salvito, T.W. Schultz, F. Siddiqi, I.G. Sipes, G. Sullivan, Y. Thakkar, Y. Tokura, S. Tsang   +34 more
openalex   +1 more source

Steroidi i poliketidi iz kore biljke Uvaria hamiltonii [PDF]

, 2004
Two known steroids, stigmasterol and 6beta-hydroxystigmasta-4,22-dien-3-one (1) and two unusual polyketides, cis-4-hydroxymellein (2) and trans-4-hydroxymellein (3) were isolated from the stem bark of Uvaria hamiltonii.
CHOUDHURY M. HASAN, KAMRUN NAHAR ASHA, MOHAMMAD A. RASHID, RASHEDUZZAMAN CHOWDHURY   +3 more
core   +2 more sources

A Novel Synthesis of C-Nucleosides Having Pyrrolo[1,2-f]pteridine, 6- and 8-Deazapyrrolo[1,2-f]pteridine Ring Systems from 6-Hydroxy-6-(2,3,5-tri-O-benzoyl-b-D-ribofuranosyl)-2H-pyran-3(6H)-one

, 1998
Isamu Maeba, Natsu Nishimura, Yoshitada Hasegawa, Souhei Mizuno, Misa Yuasa   +4 more
openalex   +1 more source

Reaction of 2,4,6-Trimethylpyrylium Salt with Organocopper Reagents: Selective Synthesis of 4H-Pyrans

, 1987
Kin‐ya Akiba, Yohsuke Yamamoto, Takashi Kume, Kin‐ya Akiba   +3 more
openalex   +1 more source

Para toluenesulfonic acid-catalyzed one-pot, three-component synthesis of benzo[5,6]chromeno[3,2-c]quinoline compounds in aqueous medium

Heterocyclic Communications, 2021
Orang Naser Sadeghpour, Soltani Hadi, Ghiamirad Mehdi, Sabegh Mehdi Ahmadi   +3 more
doaj   +1 more source

Preparation of Substituted 2H-Pyrans via a Cascade Reaction from Methyl Coumalate and Activated Methylene Nucleophiles

, 2017
Liang Chang, Kristína Plevová, Serge Thorimbert, Luc Dechoux   +3 more
openalex   +2 more sources

Synthesis, Characterization and Biological Activity of new Pyran Derivatives of 8-Hydroxyquinoline [PDF]

, 2019
Mohamed Rbaa, Omar Bazdi, Abdelhadi Hichar, Younès Lakhrissi, Khadija Ounine, B. Lakhrissi   +5 more
openalex  

Syntheses of Vinylogous 4H-Pyrones from 2,6-Dimethyl-4H-pyran-4-thione and Arenyl Bromomethyl Ketones

, 1986
Kin‐ya Akiba, Katsuo Ohkata, Masao Imagawa, Kin‐ya Akiba   +3 more
openalex   +1 more source

Pyran Polymer [PDF]

, 2020
openaire   +1 more source