SEARCH Articles Figures Tables 4- Hydroxy coumarin, addition 4-Hydroxy coumarine 4-Hydroxy coumarine 7-Hydroxy-4-methyl coumarin Coumarin 4-hydroxy-3-phenyl Coumarin 7-hydroxy-, ring synthesis Coumarin, 4,4 -methylenebis-4-hydroxy Coumarin, 7-acetoxy-4-[2- -5-hydroxy Coumarins 3-amino-6-hydroxy- from Coumarins 4-hydroxy-3-aryl Coumarins hydroxy Coumarins hydroxy Heptadecyl-7-hydroxy coumarin Hydroxy coumarins 812 -methylene compounds