Results 111 to 120 of about 2,171 (174)

Exploring the impact of fulvic acid and humic acid on heavy metal availability to alfalfa in molybdenum contaminated soil. [PDF]

Sci Rep
Wang M, Song G, Zheng Z, Mi X, Song Z.
europepmc   +1 more source

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14.14 2H-1-Benzopyrans and 4H-1-Benzopyrans

Abstract2H-1-Benzopyrans and 4H-1-benzopyrans are a significant class of heterocyclic compounds that exist widely in plants, including edible vegetables and fruits, and possess a wide range of biological and pharmacological activities. Hence, these compounds have high potential in pharmaceutical discovery.
exaly   +2 more sources

Organocatalytic Synthesis of Chiral Benzopyrans.

ChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Thavendran Govender, Leila Hojabri, Firouz Matloubi Moghaddam, Per I. Arvidsson   +3 more
openaire   +1 more source

New benzopyrans: Anticonvulsant activities

Life Sciences, 1975
Three new analogs of dimethylheptylpyran (DMHP) (SP-141, SP-143, and SP-175) were found to exhibit significant anticonvulsant activity against audiogenic, supramaximal electroshock, and maximal pentylentetrazol induced seizures in mice. In rats, all three compounds were found to be more active than diphenylhydantoin in the supramaximal electroshock ...
N P, Plotnikoff, H E, Zaugg, A C, Petersen, D L, Arendsen, R F, Anderson   +4 more
openaire   +2 more sources

Benzopyrans from Hypericum polyanthemum

Phytochemistry, 2001
From the aerial parts of Hypericum polyanthemum Klotzsch ex Reichardt (Guttiferae), three chromenes, 6-isobutyryl-5,7-dimethoxy-2,2-dimethyl-benzopyran; 7-hydroxy-6-isobutyryl-5-methoxy-2,2-dimethyl-benzopyran and 5-hydroxy-6-isobutyryl-7-methoxy-2,2-dimethyl-benzopyran were isolated. Their structures were determined by NMR spectroscopic analyses.
A B, Ferraz, S A, Bordignon, C, Staats, J, Schripsema, G L, Lino von Poser   +4 more
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Sulfamic Acid: An Efficient Catalyst for the Diastereoselective, One-Pot Synthesis of Pyrano Benzopyrans, Furano Benzopyrans and Ethoxy Benzopyrans

Letters in Organic Chemistry, 2005
Sulfamic acid catalyses the one-pot three components coupling of aldehydes, anilines and electron rich dienophiles such as dihydropyran, dihydrofuran and ethyl vinylether resulting in the formation of pyrano, furano and ethoxy benzopyrans.
R. Kumar, R. Nagarajan, K. Vijay, P. Perumal   +3 more
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Benzopyrans

1977
Nicholas P. Plotnikoff, Harold E. Zaugg
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Benzopyrans from Melicope ptelefolia leaves

Phytochemistry, 1997
Tran Van Sung
exaly  

Benzopyrans

2006
openaire   +1 more source