77597-17-2

Upstream product

• 77597-15-0 p-nitrobenzyl 2-<4-<<<<3-<(tetrahydropyran-2-yl)oxy>propyl>thio>tiocarbonyl>thio>-2-oxo-1-azetidinyl>-2-(triphenylphosphoranylidene)acetate 
• 77597-11-6 4-<<<<3-<(tetrahydropyran-2-yl)oxy>propyl>thio>thiocarbonyl>thio>-2-azetidinone 
• 77597-13-8 Hydroxy-{2-oxo-4-[3-(tetrahydro-pyran-2-yloxy)-propylsulfanylthiocarbonylsulfanyl]-azetidin-1-yl}-acetic acid 4-nitro-benzyl ester 

Downstream Products

• 77597-21-8 p-nitrobenzyl 2-<4-<<<<3-(tert-butyldimethylsilyloxy)propyl>thio>thiocarbonyl>thio>-2-oxo-1-azetidinyl>-2-(triphenylphosphoranylidene)acetate 
• 77597-19-4 [2-(3-Acetoxy-propylsulfanylthiocarbonylsulfanyl)-4-oxo-azetidin-1-yl]-(triphenyl-λ⁵-phosphanylidene)-acetic acid 4-nitro-benzyl ester 

Relevant academic research and scientific papers

2-(ALKYLTHIO)PENEM-3-CARBOXYLIC ACIDS. II. CHEMICAL MANIPULATION OF PENEM SIDE CHAINS

The tert-butyldimethylsilyl group was found to be effective for protection of the hydroxyl group in penem synthesis.Manipulation of the side-chain hydroxyl group of base-sensitive penem-3-carboxylates was successfully conducted by means of a displacement