Polycyclic N-Heterocyclic Compounds 74: Rearrangement Reaction of 5-Amino-1,2-dihydrofuro[2,3-c]isoquinolines with α,ω-Dibromoalkanes and Evaluation of Product Bronchodilator Activity
摘要:
Reaction of 5-amino-1,2-dihydrofuro[2,3-c]isoquinolines with 1,2-dibromoethane and 1,3-dibromopropane in the presence of a base afforded 2',3'-dihydrospiro[cyclopropane-1,6'(5'H)-imidazo[2,1-a]isoquinolin]-5'-ones land 3',4'-dihydro-2'H-spiro[cyclopropane-1,7'(6'H)-pyrimido[2,1-a]isoquinolin]-6'-ones, respectively. Certain of the products showed significant bronchodilator activity.