SEARCH Articles Figures Tables 2- Substituted-7- perhydropyrido pyrazine 2- carbonyl perhydropyrido 2- perhydropyrido pyrazin-3-one 2- perhydropyrido pyrazine 2- propionate perhydropyrido pyrimidine-1,3dione, acid hydrolysis 3- Alkoxy-2- perhydropyrido oxazines 3- Hydroxy-3- perhydropyrido oxazine 3- perhydropyrido oxazine 3.3- perhydropyrido oxazin-l-one, lithiation 4- Phenyl-9- perhydropyrido oxazin-l-one 4- Phenyl-9- perhydropyrido oxazin-l-one catalytic hydrogenation 4- perhydropyrido oxazines, reaction with 4- perhydropyrido pyrimidine 6- perhydropyrido pyrazines 6-Formyl-2- perhydropyrido pyrazine 7- Hydroxymethyl-2- perhydropyrido 7-Hydroxyethyl-2- perhydropyrido pyrazines 8-Methyl-3- perhydropyrido oxazin-l-one 9 perhydropyrido oxazin-1-ones, reduction Perhydropyrido [! ,3)thiazines Perhydropyrido benzoxazines Perhydropyrido oxazin1,3,5-triones Perhydropyrido oxazine, dipole Perhydropyrido oxazine, dipole moments Perhydropyrido oxazine-3,6-dione Perhydropyrido oxazines Perhydropyrido pyrazine-3,4-dione Perhydropyrido pyrazine-4-ones Perhydropyrido pyrazines preparation Perhydropyrido pyrazines reactions Perhydropyrido pyridazine Perhydropyrido pyrimidine, Bohlmann Perhydropyrido pyrimidine, ring Perhydropyrido thiazin-4-ones