Results 91 to 100 of about 11,091 (232)

ADDITION OF UNSYMMETRICAL DIENES TO ACYL-1,4-BENZOQUINONES AND OXIDATION OF THE ADDUCTS WITH MANGANESE DIOXIDE: A REGIOSPECIFIC ROUTE TO MONO- AND DI-METHYL-1,4-NAPHTHOQUINONES [PDF]

Journal of Sciences, Islamic Republic of Iran, 2000
Regioselective Diels-Alder reactions of acyl-1,4-benzoquinones 1 with, severally, isoprene, trans-piperylene,1-acetoxy-1,3-butadiene and 1-methoxy-1,3-butadiene gave the corresponding adducts 2 in high yield.
doaj  

Naphthoquinone derivatives and lignans from the Paraguayan crude drug [PDF]

, 2003
Schmeda-Hirschmann,G. Laboratorio de Quımica de Productos Naturales,Instituto de Quımica de Recursos Naturales, Universidad de Talca, Casilla 747, Talca, Chile.The Paraguayan crude drug “tayı¨ pyta´” is used to treat cancer, wounds and inflammation.
Papastergiou, F., Schmeda-Hirschmann, G.
core  

Boosting disassembly of π–π stacked supramolecular nanodrugs under tumor microenvironment by introducing stimuli‐responsive drug‐mates

Aggregate
Numerous reports have demonstrated the construction of supramolecular nanodrugs (SNDs) via the π–π stacking of drug molecules for antitumor applications because most drugs possess aromatic rings or other planar conjugate units.
Wenzhe Xu, Ruixu Yang, Yingke Xue, Yang Chen, Shuwei Liu, Songling Zhang, Yonggang Wang, Yi Liu, Hao Zhang   +8 more
doaj   +1 more source

Trypanocidal activity of isolated naphthoquinones from Tabebuia and some heterocyclic derivatives: a review from an interdisciplinary study

Journal of the Brazilian Chemical Society, 2001
Naphthoquinones isolated from the wood of trees of the families Bignoniaceae and Verbenaceae have been subjected to an interdisciplinary study since the seventies, when Dr. Benjamin Gilbert, at the Federal University of Rio de Janeiro, launched a program
De Moura Kelly C. G., Emery Flávio S., Neves-Pinto Cleverson, Pinto Maria do Carmo F. R., Dantas Andrea P., Salomão Kelly, Castro Solange L. de, Pinto Antônio V.   +7 more
doaj  

Quinones as dienophiles in the Diels-Alder reaction: history and applications in total synthesis [PDF]

, 2014
In the canon of reactions available to the organic chemist engaged in total synthesis, the Diels–Alder reaction is among the most powerful and well understood. Its ability to rapidly generate molecular complexity through the simultaneous formation of two
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core   +2 more sources

Cytotoxic Naphthoquinones from Alkanna cappadocica

Journal of Natural Products, 2010
In a continuing program to discover new anticancer agents from plants, especially naphthoquinones from the Alkanna genus, Alkanna cappadocica was investigated. Bioassay-guided fractionation of a dichloromethane/methanol (1:1) extract of the roots led to the isolation of four new and four known naphthoquinones.
Sevimli-Gur, Canan, Akgun, Ismail H., Deliloglu-Gurhan, Ismet, Korkmaz, Kemal S., Bedir, Erdal   +4 more
openaire   +4 more sources

Nematicidal Activities of Three Naphthoquinones against the Pine Wood Nematode, Bursaphelenchus xylophilus

Molecules, 2019
Bursaphelenchus xylophilus (Steiner & Buhrer) Nickle, is a serious forest pest, causing enormous economic losses in pine trees in Korea, China, Japan, and countries in Western Europe.
Deok Jea Cha, Junheon Kim, Dong Soo Kim   +2 more
doaj   +1 more source

Ozonolysis of Naphthoquinones. III. 1,2-Naphthoquinone. [PDF]

Acta Chemica Scandinavica, 1962
Erling Bernatek, Arne Nicolai Soteland, Leif Lipschitz, Jørgen Tormod Nielsen   +3 more
openaire   +1 more source

Activity of natural and synthetic naphthoquinones against Toxoplasma gondii, in vitro and in murine models of infection

Parasite, 2002
The effect of 14 natural and synthetic naphthoquinones in the replication of Toxoplasma gondii was evaluated. In vitro studies were accomplished in cultures of 2C4 fibroblasts infected with RH- strain.
Ferreira R.A., Oliveira A.B., Gualberto S.A., Vitor R.W.A.   +3 more
doaj   +1 more source

Aromatase inhibitory activity of 1,4-naphthoquinone derivatives and QSAR study [PDF]

A series of 2-amino(chloro)-3-chloro-1,4-naphthoquinone derivatives (1-11) were investigated for their aromatase inhibitory activities. 1,4-Naphthoquinones 1 and 4 were found to be the most potent compounds affording IC50 values 5.2 times lower than the ...
Nantasenamat, Chanin, Pingaew, Ratchanok, Prachayasittikul, Supaluk, Prachayasittikul, Veda, Prachayasittikul, Virapong, Ruchirawat, Somsak, Sitthimonchai, Somkid, Worachartcheewan, Apilak   +7 more
core   +1 more source