2-Mercapto-3-methyl-4/7-pyrido

Mercapto-3-methyl-4//-pyrido[],2-rz]pyrimidin-4-one and its 6,7,8,9-tetrahydro derivative were S-alkylated with 4-substituted benzylbromides (96EUP733633). 

Phenyl-l,2,3,6-tetrahydropyrido[2,l- ][l,3]thiazino[3,2- ]quinolin-6-ones were prepared by the reaction of 2-mercapto-5-phenyl-l,4-dihydroquinolin-4-ones with 1,3-dihalopropane <1997JAK97/278780>. 7-Acetyl-2-aryl-9-cyano-6-methyl-8-phenyl-3,4-dihydro-277,877-pyrido[2,l- ][l,3]thiazin-4-ones were obtained from 5-acetyl-3-cyano-6-methyl-4-phenyl-l,2,3,4-tetrahydropyridine-2-thione with 3-aryl-2-propenoyl chloride <2002CHE761>. Reaction... 

The mercapto group of 3-mercapto-3,4-dihydro-l//-pyrido[2,l-c][l,4]-oxazinium salt reacted with p-nitrobenzyl (55,65)-2-(diphenylposphono) oxy-6-[l(/ )-hydroxyethyl]carbapen-2-em-3-carboxylates in the presence of N,jV-diisopropylethylamine (86EUP168707, 86EUP169410). 3,4-Dihydro-l//,8//-pyrido[2,l-c][l,4]oxazine-8-thione was alkylated with diphenyl-methyl 3-iodomethyl-7-acylamino-3-cephem-4-carboxylates [89JAP(K) 89/290683],... 

C18H14N2, 5,6-Cyclopentenopyrido[3,2-a]carbazole, 46B, 276 C18H14N2OS, Anhydro-2-benzyl-1-mercapto-9-methyl-9-oxo-(9H)-imidazo-[1,5-a]indolium hydroxide, 39B, 213 Cl8Hi5NO3, 4,5,10,11,12,13-Hexahydro-10,13a-methanocycloocta[c]pyr-rolo[3,2,1-ij]quinoline-7,9,14-trione, 44B, 260 Cl8HigBrNO, trans-11-Bromo-5,6-dihydro-4,6-dimethyl-4H,8H-pyrido-[3,2,1-de]phenanthridin-8-one, 44B, 261 Cl8Hi6N2O2, 1H,4H-2,3-Dimethylpyridazino[1,2-b]benzo[g]phthalazine-... 

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