Results 91 to 100 of about 2,756 (214)

Synthesis and anticonvulsant and sedative-hypnotic activity of 4-(alkylimino)-2,3-dihydro-4H-1-benzopyrans and benzothiopyrans

, 1990
A series of 4-(alkylimino)-5-hydroxy-7-alkyl-2,3-dihydro-4H-1-benzopyrans and -thiopyrans were synthesized and evaluated for anticonvulsant activity. Preliminary screening of these compounds revealed that 2,2-dimethyl-4-[(2-hydroxyalkyl)imino]-5-hydroxy ...
A. Bonsignori, P. Melloni, L. Merlini, M. Valsecchi, M. L. Quadri, A. Arnoldi, A. C. Rossi   +6 more
core   +1 more source

The Effects of Flavonoids on Skeletal Muscle Mass, Muscle Function, and Physical Performance in Individuals with Sarcopenia: A Systematic Review of Randomized Controlled Trials. [PDF]

Nutrients, 2023
Wu C, Suzuki K.
europepmc   +1 more source

Preventing the Formation of the Long-Lived Colored Transoid-Trans Photoisomer in Photochromic Benzopyrans

, 2016
A new photochromic fused benzopyran presenting a bridge between the pyran double bond and the benzenic ring was prepared. While the UV irradiation of usual benzopyrans leads to the formation of two colored photoisomers with very different thermal ...
Stéphanie Delbaere (1744363), Céu M. Sousa (2178632), Paulo J. Coelho (1456876), João Seixas de Melo (2178630), Jérôme Berthet (2053732), João Pina (1363344)   +5 more
core   +1 more source

Synthesis of Organochalcogen Propargyl Aryl Ethers and Their Application in the Electrophilic Cyclization Reaction: An Efficient Preparation of 3-Halo-4-Chalcogen-2H-Benzopyrans

, 2016
We herein described the synthesis of various organochalcogen propargyl aryl ethers via reaction of lithium acetylide intermediate with electrophilic chalcogen (sulfur, selenium, tellurium) species.
Gilson Zeni (1457287), Adriane Sperança (1991833), Cristina W. Nogueira (2373097), Ricardo Brandão (2377612), Davi F. Back (1457293), Benhur Godoi (1991830)   +5 more
core   +2 more sources

Pueraria mirifica: a critical review of the ethnobotany, phytochemistry, pharmacology and challenges in standardization and safety

Frontiers in Pharmacology
BackgroundPueraria candollei var. mirifica (Airy Shaw and Suvat.) Niyomdham (Pueraria mirifica), locally known as “White Kwao Krua” or “white kudzu”, is a renowned medicinal botanical drug indigenous to Southeast Asia, particularly Thailand and Myanmar ...
Haiqin Zeng, Haiqin Zeng, Haiqin Zeng, Juan Wen, Juan Wen, Juan Wen, Juan Wen, Minqi Chen, Minqi Chen, Minqi Chen, Zhendong Qiu, Zhendong Qiu, Zhendong Qiu, Shiping Huang, Erwei Hao, Erwei Hao, Erwei Hao, Zhengcai Du, Zhengcai Du, Zhengcai Du, Chun Yao, Chun Yao, Chun Yao, Xiaotao Hou, Xiaotao Hou, Xiaotao Hou, Xiaotao Hou, Jiagang Deng, Jiagang Deng, Jiagang Deng   +29 more
doaj   +1 more source

The structure and stereochemistry of Edulan I and II and the stereochemistry of the 2,5,5,8a-Tetramethyl-3,4,4a,5,6,7,8,8a-octahydro-2H-1-benzopyrans

, 1977
Edulan I and 11, two important trace components of the juice of passionfruit Passiflora edulis (Sims), were shown by micro-reaction g.l.c., by micro-spectrometry (m.s., N.M.R., i.r. and u.v.) and by com- parison with synthetic products to be the epimeric
FB Whitfield, G Stanley
core   +1 more source

Polymer-Supported Palladacycles:  Efficient Reagents for Synthesis of Benzopyrans with Palladium Recovery. Relationship among Resin Loading, Pd:P Ratio, and Reactivity of Immobilized Palladacycles

, 2016
Oxapalladacycles were immobilized on polystyrene−divinylbenzene supports and treated with 3-aryl-2-propynoates or 1-alkyl-1,2-propadienes to afford 2H-1-benzopyrans in yields superior to those for solution-phase experiments.
John C. Hershberger (2108470), Lei Zhang (38117), Helena C. Malinakova (1915663), Genliang Lu (2235757)   +3 more
core   +1 more source

The importance of peri-interactions in determining the half-chair conformation of the dihydropyran ring in 2-benzopyrans. Stereochemical consequences

, 2003
peri-Interactions are important in determining both the conformation of the dihydropyran ring of 2-benzopyrans as well as the stereochemistry of its ...
Aggarwal, R., de Koning, C.B., Green, I.R., Birkbeck, A.A., Oosthuizen, F.J., Giles, R.G.F., Li, S-H   +6 more
core  

Rapid Syntheses of Benzopyrans from o-OBOC Salicylaldehydes and Salicyl alcohols:  A Three-Component Reaction

, 2016
The Diels−Alder reactions of o-quinone methides generated from OBOC-salicylic aldehydes and alcohols are described, allowing for the synthesis of various substituted benzopyrans.
Ryan M. Jones (3027633), Carolyn Selenski (1355952), Thomas R. R. Pettus (1333011)   +2 more
core   +1 more source

An excellent protocol for the synthesis of benzopyrans using basic resin under MWI

, 2010
1561-1564A convenient, microwave promoted novel protocol for the synthesis of diverse kinds of substituted benzopyrans from the corresponding variety of substituted hydroxy acetophenones and keto compounds using Amberlite IRA 400 resin (basic resin ...
Tripathi, A K, Taneja, Subhash C, Koul, S   +2 more
core