New functionalized monocyclic beta-lactams suitable precursors for anhydro 2-azacephams
摘要:
The anhydro 2-azacephams 9 were prepared starting from penicillanate sulphoxides 1 via 4-aminosulphinyl-2-oxoazetidines 3 and 4 and 4-aminosulphonyl-2-oxoazetidines 6 and 8. New functionalized monocyclic beta-lactams 5 and 7 were also produced as precursors for other beta-lactam species.
New functionalized monocyclic beta-lactams suitable precursors for anhydro 2-azacephams
摘要:
The anhydro 2-azacephams 9 were prepared starting from penicillanate sulphoxides 1 via 4-aminosulphinyl-2-oxoazetidines 3 and 4 and 4-aminosulphonyl-2-oxoazetidines 6 and 8. New functionalized monocyclic beta-lactams 5 and 7 were also produced as precursors for other beta-lactam species.