Synthesis and antibacterial activity of pyrano-(thiopyrano)[3,4-c]pyridine-, 2,7-naphthyridine-, and 5,6,7,8-tetrahydro-isoquinoline-3(2h)-thione derivatives
Synthesis and antibacterial activity of pyrano-(thiopyrano)[3,4-c]pyridine-, 2,7-naphthyridine-, and 5,6,7,8-tetrahydro-isoquinoline-3(2h)-thione derivatives