77690-71-2

Upstream product

• 77690-72-3 N⁵,5'-anhydro-N¹-(2',3'-O-isopropylidene-β-D-ribofuranosyl)-4-carboxyhydrazido-5-amino-2-bromoimidazole 
• 98-59-9 p-toluenesulfonyl chloride 
• 14734-28-2 2',3'-O-isopropylidene-5'-O-mesyl-8-bromoguanosine 
• 77690-74-5 N²-dimethylaminomethylidene-9-(2,3-O-isopropylidene-β-D-ribofuranosyl)-8-bromoguanine 
• 77690-75-6 N²-dimethylaminomethylidene-1-methoxymethylene-9-(2,3-O-isopropylidene-β-D-ribofuranosyl)-8-bromoguanine 
• 77690-76-7 N²-dimethylaminomethylidene-1-methoxymethylene-9-(2,3-O-isopropylidene-5-O-mesyl-β-D-ribofuranosyl)-8-bromoguanine 
• 13591-82-7 8-bromo-2'',3'-o-isopropylidene guanosine 

Relevant academic research and scientific papers

STUDIES DIRECTED TOWARD SYNTHESIS OF GUANOSINE 8,5'-IMINO CYCLONUCLEOSIDES AND DERIVATIVES-I

8,5'-Aminimino bridging in the guanosine series using 5'-O-tosyl (1) and 5'-O-mesyl derivatives (2) of 2',3'-O-isopropylidene-8-bromoguanosine (5) and hydrazine gave N3,5'-cyclized product 3 and the N5,5'-cyclonucleoside of 4-carboxy