393803-82-2

Upstream product

• 393803-57-1 1,2-dibenzyloxy-4-bromo-5-tert-butyldimethylsilyloxy-3-methylbenzene 
• 393803-37-7 (1aR,3aS,5S,7aS,7bS)-5-(tert-Butyl-dimethyl-silanyloxy)-1a,4,4,7a-tetramethyl-octahydro-1-oxa-cyclopropa[a]naphthalene-7b-carboxylic acid methyl ester 
• 393803-44-6 [(1aR,3aS,5S,7aS,7bR)-5-(tert-Butyl-dimethyl-silanyloxy)-1a,4,4,7a-tetramethyl-octahydro-1-oxa-cyclopropa[a]naphthalen-7b-yl]-methanol 
• 393803-52-6 1,2-dibenzyloxy-5-tert-butyldimethylsilyloxy-3-methylbenzene 
• 393803-41-3 (1aR,3aS,5S,7aS,7bS)-5-(tert-Butyl-dimethyl-silanyloxy)-1a,4,4,7a-tetramethyl-octahydro-1-oxa-cyclopropa[a]naphthalene-7b-carbaldehyde 
• 393803-33-3 (1aR,3aS,5S,7aS,7bS)-5-Hydroxy-1a,4,4,7a-tetramethyl-octahydro-1-oxa-cyclopropa[a]naphthalene-7b-carboxylic acid methyl ester 
• 393803-74-2 formic acid 3,4-bis-benzyloxy-5-methyl-phenyl ester 
• 393803-50-4 3,4-dibenzyloxy-5-methylphenol 
• 114626-74-3 (1aR,3aS,5S,7aS,7bS)-5-Acetoxy-1a,4,4,7a-tetramethyl-octahydro-1-oxa-cyclopropa[a]naphthalene-7b-carboxylic acid methyl ester 
• 97073-44-4 3,4-bis(benzyloxy)-5-methylbenzaldehyde 
• 69739-34-0 t-butyldimethylsiyl triflate 
• 393803-75-3 (R)-[3,4-Bis-benzyloxy-6-(tert-butyl-dimethyl-silanyloxy)-2-methyl-phenyl]-[(1aR,3aS,5S,7aS,7bR)-5-(tert-butyl-dimethyl-silanyloxy)-1a,4,4,7a-tetramethyl-octahydro-1-oxa-cyclopropa[a]naphthalen-7b-yl]-methanol 

Relevant academic research and scientific papers

Syntheses and absolute stereochemistries of UPA0043 and UPA0044, cytotoxic antibiotics having a p-quinone-methide structure

(Formula Presented) The first syntheses of new antibiotics UPA0043 and UPA0044 were accomplished starting from commercially available 18β-glycyrrhetinic acid and vanillin. The present syntheses involve the coupling of a sesquiterpenoid aldehyde and an ary