2-Amino-6-oxy-8-methyl pteridin, 2-Amino-6-oxy-9-methyl-pteridin, 2-Amino-6-oxy-8-oxymethyl-pteridin und 2-Amino-6-oxy-9-oxymethyl-pteridin
作者:P. Karrer、R. Schwyzer
DOI:10.1002/hlca.19490320211
日期:1949.3.15
2-Amino-6-oxy-8-methyl-pteridin,2-Amino-6-oxy-9-methyl-pteridin, 2-Amino-6-oxy-8-oxymethyl-pteridinund 2-Amino-6-oxy-9-oxy-methyl-pteridin wurden nach besonderen Methoden in reinem Zustand dargestellt, wobei sich die Reinigung über die Acetate besonders bewährte.
2-氨基-6-氧-8-甲基-蝶啶,2-氨基-6-氧-9-甲基-蝶啶,2-氨基-6-氧-8-氧甲基-蝶啶和2-氨基-6-氧- 9-氧-甲基-pteridin wurden nach besonderen Methoden in reinem Zustand dargestellt,醋酸be石bewährte。
Backer; Houtman, Recueil des Travaux Chimiques des Pays-Bas, 1951, vol. 70, p. 725,728
作者:Backer、Houtman
DOI:——
日期:——
Synthesis of 6-Hydroxymethylpterin α- and β-D-Glucosides
The key precursor, N(2)-(N,N-dimethylaminomethylene)-6-hydroxymethyl-3-[2-(4-nitrophenyl)ethyl]pterin (11) was efficiently prepared from 2,5,6-triamino-4-hydroxypyrimidine (8) in 5 steps. The first, unequivocal synthesis of 6-hydroxymethylpterin alpha-D-glucoside (6a) was achieved by treatment of 11 with 4,6-di-O-acetyl-2,3-di-O-(4-methoxybenzyl)-alpha-D-glucopyranosyl bromide (16) in the presence of tetraethylammonium bromide and N-ethyldiisopropylamine, followed by removal of the protecting groups, while 6-hydroxymethylpterin beta-D-glucoside (6b) was prepared by means of selective glycosylation of 11 with 2,3,4,6-tetra-O-benzoyl-alpha-D-glucopyranosyl bromide (12) in the presence of silver triflate and tetramethylurea.
2-Amino-4-hydroxy-6-pteridinecarboxaldehyde
作者:C. W. Waller、A. A. Goldman、R. B. Angier、J. H. Boothe、B. L. Hutchings、J. H. Mowat、J. Semb