Zobrazeno 1 - 7
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pro vyhledávání: '"David Garner"'
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :3239-3244
The organic ligand of the cofactor of the oxomolybdoenzymes has been synthesised in the protected and masked form, 5. The key steps in the conversion of the previously prepared 3, a protected 5-(2-amino-4-oxopteridin-6-yl)-4-(1,2-dihydroxyethyl)-1,3-
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :801-808
Cobalt(III) complexes are reported in which (a) a dihydroquinoxalinylethenedithiolate ligand models the pyrazine ring oxidation level in Moco, and (b) a pteridinylethenedithiolate models the pteridine ligand in Moco.
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :1245
Reduction of quinoxalines and pteridines with sodium borohydride or sodium cyanoborohydride in the presence of benzyl chloroformate gives N-benzyloxycarbonyl- or N,N′-bisbenzyloxycarbonyl tetrahydro derivatives.
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Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :2311
2-Hydroxy-2-phenylethyl and-2-quinoxalin-2-ylethyl N,N-dimethyldithiocarbamates are cyclised to 4-aryl-1,3-dithiolane-2-thiones, (8b) and (10), and these could be dehydrogenated to the corresponding dithioles, (7b) and (11), from which the arylethene
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :1907
It is shown that alkaline hydrolysis of 2-(NN-dialkylamino)-1,3-dithiolium salts produces solutions of ene-1,2-dithiolate salts which are trapped by reaction with iodomethane. The dithiolium salts were prepared by reaction of α-bromoketones with sod
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :2317
2-(D-arabino-Tetrahydroxybutyl)quinoxaline (2) reacted selectively to give the diol acetal (3a) which was converted into mono- and di-mesylates and-tosylates, and, via the ethyl ortho ester (4) into the alkene acetal (5a). Both thiocyanogen and bromi