Simple and efficient syntheses of 7-deazacaffeines, 9-deazatheophyllines, furo [2, 3-d] pyrimidines and furo [3, 2-d] pyrimidines from 5- or 6-substituted pyrimidines by means of intramolecular cyclization reactions are described.
Specific phenylalanine derivatives and analogues thereof have an antagonistic activity to α4 integrin. They are used as therapeutic agents for various diseases concerning α4 integrin.
Specific phenylalanine derivatives and analogues thereof have an antagonistic activity to α 4 integrin. They are used as therapeutic agents for various diseases concerning α 4 integrin.
Unusual reactions of dimethylpyrimido[4,5-e]- and [5,4-e]-1,2,4-triazinediones with diethylamine
作者:S. V. Shorshnev、S. E. Esipov
DOI:10.1007/bf00479930
日期:1989.2
Diethylamine and triethylamine as sources of the dienophile component in the reverse azadiene synthesis with dimethylpyrimido[4,5-e]- and-[5,4-e]-1,2,4-triazinediones and 1,2,4,5-tetrazines
作者:S. V. Shorshnev、S. E. Esipov、V. V. Kuz'menko、A. V. Gulevskaya、A. F. Pozharskii、A. I. Chernyshev、G. G. Aleksandrov、V. N. Doron'kin