Pteridines. 54. A novel synthetic approach to C-6 carbon substituted pterins via intermolecular 1,3-dipolar cycloaddition reactions
摘要:
A number of 5-[(hydroxyimino)methyl]pyrazines and 6-[(hydroxyimino)methyl]pterins were converted to their respective nitrile oxides in the presence of dipolarophiles to give side-chain isoxazoles and isoxazolines as potential intermediates for the construction of multifunctional C-6 pterin substituents.
Pteridines. 54. A novel synthetic approach to C-6 carbon substituted pterins via intermolecular 1,3-dipolar cycloaddition reactions
摘要:
A number of 5-[(hydroxyimino)methyl]pyrazines and 6-[(hydroxyimino)methyl]pterins were converted to their respective nitrile oxides in the presence of dipolarophiles to give side-chain isoxazoles and isoxazolines as potential intermediates for the construction of multifunctional C-6 pterin substituents.