192328-71-5

Upstream product

• 192328-70-4 (S)-2-[(2R,3R)-2-tert-Butoxycarbonylamino-3-(4-fluoro-3-nitro-phenyl)-3-hydroxy-propionylamino]-3-cyano-propionic acid methyl ester 
• 24424-99-5 di-tert-butyl dicarbonate 
• 192328-69-1 (2R,3R)-2-tert-Butoxycarbonylamino-3-(4-fluoro-3-nitro-phenyl)-3-hydroxy-propionic acid pentafluorophenyl ester 
• 174146-54-4 (2R,3R)-2-tert-Butoxycarbonylamino-3-(4-fluoro-3-nitro-phenyl)-3-hydroxy-propionic acid methyl ester 
• 174146-55-5 (2R,3R)-2-tert-Butoxycarbonylamino-3-(4-fluoro-3-nitro-phenyl)-3-hydroxy-propionic acid 

Downstream Products

• 174146-56-6 (R)-{(S)-2-[(2R,3R)-2-tert-Butoxycarbonylamino-3-(4-fluoro-3-nitro-phenyl)-3-hydroxy-propionylamino]-3-cyano-propionylamino}-(3,5-dihydroxy-4-methoxy-phenyl)-acetic acid tert-butyl ester 
• 207390-92-9 C₅₂H₆₀BrClFN₇O₁₆Si 
• 219911-53-2 (S)-{(S)-2-[(2R,3R)-2-tert-Butoxycarbonylamino-3-(4-fluoro-3-nitro-phenyl)-3-hydroxy-propionylamino]-3-cyano-propionylamino}-(3,5-dihydroxy-4-methoxy-phenyl)-acetic acid tert-butyl ester 
• 219911-59-8 [(1R,2R)-1-{(S)-2-Cyano-1-[(R)-1-(3,5-dihydroxy-4-methoxy-phenyl)-2-hydroxy-ethylcarbamoyl]-ethylcarbamoyl}-2-(4-fluoro-3-nitro-phenyl)-2-hydroxy-ethyl]-carbamic acid tert-butyl ester 
• 219911-69-0 [(1R,2R)-1-((S)-2-Cyano-1-{[(S)-(3,5-dihydroxy-4-methoxy-phenyl)-methylcarbamoyl-methyl]-carbamoyl}-ethylcarbamoyl)-2-(4-fluoro-3-nitro-phenyl)-2-hydroxy-ethyl]-carbamic acid tert-butyl ester 
• 192328-62-4 (R)-[3,5-Bis-(tert-butyl-dimethyl-silanyloxy)-4-methoxy-phenyl]-{(S)-2-[(2R,3R)-2-tert-butoxycarbonylamino-3-(tert-butyl-dimethyl-silanyloxy)-3-(4-fluoro-3-nitro-phenyl)-propionylamino]-3-cyano-propionylamino}-acetic acid tert-butyl ester 
• 174146-58-8 (R)-{(S)-2-[(2R,3R)-2-tert-Butoxycarbonylamino-3-(tert-butyl-dimethyl-silanyloxy)-3-(4-fluoro-3-nitro-phenyl)-propionylamino]-3-cyano-propionylamino}-(3,5-dihydroxy-4-methoxy-phenyl)-acetic acid tert-butyl ester 

Relevant academic research and scientific papers

Synthesis of the vancomycin CDE ring system

A first generation synthesis of 22 is described constituting the first disclosure of the preparation of an appropriately protected and fully functionalized vancomycin CDE ring system complete with the C and E ring monochloro substitution pattern. The approach, which is based on two aromatic nucleophilic substitution reactions for sequential CD and DE macrocyclization, provided the opportunity to define an indirect solution to the control of the CDE atropisomer stereochemistry through selective thermal equilibration of the DE versus unaltered CD ring system. Its success provides a rationale for a preferred order to the CD and DE ring system introductions.

Synthesis of the vancomycin CD and DE ring systems

Full details of the synthesis of the fully substituted vancomycin CD and DE ring systems are described and a potential solution to the control of the atropisomer stereochemistry is defined.