76085-04-6

Upstream product

• 29124-80-9 1ξ-oxo-6β-(2-phenyl-acetylamino)-1λ⁴-penicillanic acid 4-nitro-benzyl ester 

Downstream Products

• 156927-21-8 3-Methyl-2-[(2R,3R)-2-(5-methyl-isoxazol-3-ylsulfinamoyl)-4-oxo-3-phenylacetylamino-azetidin-1-yl]-but-2-enoic acid 4-nitro-benzyl ester 
• 153785-20-7 3-Methyl-2-[(2R,3R)-2-(5-methyl-isoxazol-3-ylsulfamoyl)-4-oxo-3-phenylacetylamino-azetidin-1-yl]-but-2-enoic acid 4-nitro-benzyl ester 
• 153785-27-4 2-((2R,3R)-2-Benzylsulfamoyl-4-oxo-3-phenylacetylamino-azetidin-1-yl)-3-methyl-but-2-enoic acid 4-nitro-benzyl ester 
• 153785-28-5 3-Methyl-2-((2R,3R)-2-methylsulfamoyl-4-oxo-3-phenylacetylamino-azetidin-1-yl)-but-2-enoic acid 4-nitro-benzyl ester 
• 153785-34-3 3-Methyl-2-[(2R,3R)-2-(5-methyl-isoxazol-3-ylsulfamoyl)-4-oxo-3-phenylacetylamino-azetidin-1-yl]-but-2-enoic acid 
• 153785-21-8 (2R) 1-(1'-Benzyloxycarbonyl-2'-methyl-prop-1'-enyl)-2-benzylaminosulfonyl-3,3-dibromo-4-oxo-azetidine 
• 153785-35-4 2-((2R,3R)-2-Benzylsulfamoyl-4-oxo-3-phenylacetylamino-azetidin-1-yl)-3-methyl-but-2-enoic acid 
• 153785-43-4 2-((R)-2-Benzylsulfamoyl-3,3-dibromo-4-oxo-azetidin-1-yl)-3-methyl-but-2-enoic acid 
• 153784-98-6 (R)-3-Methyl-2-[(2R,3R)-2-(5-methyl-isoxazol-3-ylsulfinamoyl)-4-oxo-3-phenylacetylamino-azetidin-1-yl]-but-3-enoic acid 4-nitro-benzyl ester 

Relevant academic research and scientific papers

Use of a novel reagent in the synthesis of 3-exomethylenecephams

An improved synthesis of 3-exomethylene cephams, employing the use of ZnCl2-Et2O complex has been described.

New Functionalized Monocyclic beta-Lactams Suitable Precursors for Anhydro 2-Azacephams

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