Quantification of p- phenylenediamine and 2-hydroxy-1, 4- naphthoquinone
in henna tattoos.
This lack of activity was most likely caused by the high cytotoxicity of naphthoquinones
present in the extracts (Brandao et al.
Antifungal and antibacterial naphthoquinones
from Newbouldia laevis roots.
In summary, we may observe that while the composition of the secretions of the three species is similar in constituting mixtures of ketones and naphthoquinones
, there are significant differences both qualitative and quantitative.
pigments related to fusarubin from the fungus Fusarium solani (mart) sacc.
At the loadings tested here, diiodomethyl-p-tolylsulfone, copper metal, naphthoquinone
, fludioxonil, and tebuconazole on their own did not give good performance; all had ratings under 7 after weathering.
Henna extract contains lawsone (C10H6O3), the active ingredient and a naturally occurring naphthoquinone
NADPH is essential for the vitamin K cycle, in which the epoxide form of vitamin K is converted back to the naphthoquinone
form, which is required for [gamma]-carboxylation of osteocalcin (2).
We had previously prepared electron beam resists on the basis of halogenophenol novolacs (HPN) with naphthoquinone
diazide or bisazide and obtained an increase in sensitivity (6-9) caused by additional crosslinking via halogen elimination.
Therapeutic claims were generally based on content of the naphthoquinone
lapachol, a known constituent of Tabebuia, which had shown promise as an anti-tumor agent, but was abandoned because of unfavourable dose-toxicity characteristics.
Summary: A number of 2-(aryl/alkyl)thio-3-chloro-l,4-naphthoquinones
(3a-g) and 2,3- (aryl/alkyl)thio-l,4-naphthoquinones
(4a-d, 4f-g) were obtained by the reactions of 2,3-dichloro-1,4- naphthoquinone
(1) with some various thiols and subsequently used as building blocks for the synthesis of 2-(arylthio)-3-amino-1,4-naphthoquinone
(5a-c, 5f) derivatives.
Antitumor activity of liposomal naphthoquinone
esters isolated from Thai medicinal plant: rhinacanthus nasutus Kurz," Biological and Pharmaceutical Bulletin, vol.