Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Byeng Wha Son"'
Publikováno v:
Archives of pharmacal research. 39(6)
The addition of metal bromides (NaBr and CaBr2) during fermentation of the marine-mudflat-derived fungus Aspergillus niger induced production of a new radical scavenging brominated naphthopyranone, 6,9-dibromoflavasperone (1); and three known naphtho
Publikováno v:
Archives of Pharmacal Research. 27:1226-1232
Extracts from seventeen seaweeds were determined for tyrosinase inhibitory activity using mushroom tyrosinase with L-tyrosine as a substrate. Only one of them, Ecklonia stolonifera OKAMURA (Laminariaceae) belonging to brown algae, showed high tyrosin
Publikováno v:
Archives of Pharmacal Research. 27:1189-1193
The total synthesis of norneolignans isolated fromKrameria species, 2-aryl-5-(E)-propenylben-zofurans (5, 11), is described. The key step involves the one-pot reaction fbr 2-arylbenzofurans (2, 7) from 4-hydroxyphenylacetone with 4′-acetoxy-2-chlor
Publikováno v:
Archives of Pharmacal Research. 27:194-198
Reactive oxygen species (ROS) play an important role in the pathogenesis of many human degenerative diseases such as cancer, aging, arteriosclerosis, and rheumatism. Much attention has been focused on the development of safe and effective antioxidant
Publikováno v:
Archives of Pharmacal Research. 19:148-152
The efficient synthesis of 4-(2-thiazolyloxy)phenylalkanoic acids (10a-c), which are a potent antiinflammatory agent, was achieved in 5∼6 steps starting from isopropoxybenzene and methyl α-chloro-α-(methylthio)acetate (1). The key intermediate (4
Autor:
Hong Dae Choi, Kang Tae Lee, Xifeng Li, Jung Sook Kang, Jung Rae Rho, Jee Hean Jeong, Byeng Wha Son
Publikováno v:
Archives of Pharmacal Research. 26:532-534
Kojic acid dimethyl ether (1), and the known kojic acid monomethyl ether (2), kojic acid (3) and phomaligol A (4) have been isolated from the organic extract of the broth of the marine-derived fungusAltenaria sp. collected from the surface of the mar
Publikováno v:
Archives of Pharmacal Research. 26:21-23
Indolyl alkaloids,N b-acetyltryptamine (1) and the known oxaline (2) have been isolated from the organic extract of the broth of an unidentified fungus collected from the surface of the marine red algaGracilaria verrucosa. The structure ofN b-acetylt
Publikováno v:
Archives of Pharmacal Research. 17:190-193
Friedel-Crafts reaction of isopropoxybenzene with methyl α-chloro-α-(methylthio)acetate1 afforded methyl α-methylthio-p-isopropoxyphenylacetate2d, which was readily converted into methyl p-isopropoxyphenylacetate3 by reductive desulfurization with
Publikováno v:
Archives of Pharmacal Research. 17:17-20
Friedel-Crafts reaction of fluorene with methyl α-chloro-α-(methylthio)acetate1 gave methyl α-methylthio-2-fluoreneacetate2. Cicloprofen8, a potent antiinflammatory agent, was prepared by methylation of2 followed by reductive desulfurization of me
Publikováno v:
Archives of Pharmacal Research. 25:77-79
Farnesylhydroquinone (1) has been isolated from the mycelium of a marine-derived fungus of the genus Penicillium. The structure of the compound (1) has been elucidated by spectral method. The compound 1 exhibits potent radical scavenging activity (IC