تحضير بعض مشتقات الكافيين و دراسة فعاليتها البيولوجية مع بعض انواع البكتيريا

Abstract

The caffeine is derived methyl xanthine alkaloids , the tea considers Principal source of caffeine because the percentage of caffeine 40Â Facility the separation the caffeine f,rom the methyl xanthine derived Availability tow chemicals function ( amide , imine ) . *. use such as The caffeine how in premiere gradient for preparation new chemical Compound . use the NaBHa and LiAlHa how agent reductive , and study the biological activity to this compound with three types of bacteria's ( Escherichia Coli , Entérobactérie , Klebseiella pneumonie ) . and cornparison with biological activity the caffeine .