SEARCH Articles Figures Tables 1.2.3.4- Tetrahydro-9//-pyrido indole 1.5.6.7- Tetrahydro-3//-pyrido 3.1] benzothiazin-3-ones 1.6.7.8- Tetrahydro-4//-pyrido pyrimidin-4-ones, reduction 2- Methyl-2,3,5,6- tetrahydro-77/pyrido -1,4-benzoxazin-3-ones 2.3.6.7- Tetrahydro-177,5/7-pyrido quinazoline-1,3-diones 3- Phenyl-6,7,8,9-tetrahydro-47/-pyrido 3.4.7.8- Tetrahydro-lH,6H-pyrido 4,9-Dioxo-6,7,8,9-tetrahydro-4/7-pyrido 4- Aryl-2-imino-6,7,8,9-tetrahydro-2//pyrido pyrimidines 4- Oxo-6,7,8,9-tetrahydro-4//-pyrido 6- Methyl-6,7,8,9-tetrahydro-4//-pyrido 6.7.8.9- Tetrahydro-4H-pyrido 9- Hydroxy-2-methyl-3- 2- ethyl 6,7,8,9-tetrahydro-4//-pyrido 9- tetrahydro-4//-pyrido conformations 9- tetrahydro-4//-pyrido tautomerism 9-Bromo-6,7,8,9-tetrahydro-4//-pyrido 9-Chloro-6,7,8,9-tetrahydro-4//-pyrido 9-Hydroxy-6,7,8,9-tetrahydro-4//-pyrido