393803-75-3

Upstream product

• 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 
• 393803-57-1 1,2-dibenzyloxy-4-bromo-5-tert-butyldimethylsilyloxy-3-methylbenzene 
• 69739-34-0 t-butyldimethylsiyl triflate 
• 18162-48-6 tert-butyldimethylsilyl chloride 
• 97073-44-4 3,4-bis(benzyloxy)-5-methylbenzaldehyde 
• 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 
• 393803-50-4 3,4-dibenzyloxy-5-methylphenol 
• 393803-74-2 formic acid 3,4-bis-benzyloxy-5-methyl-phenyl ester 
• 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 
• 393803-33-3 (1aR,3aS,5S,7aS,7bS)-5-Hydroxy-1a,4,4,7a-tetramethyl-octahydro-1-oxa-cyclopropa[a]naphthalene-7b-carboxylic acid methyl ester 

Downstream Products

• 393803-76-4 Acetic acid (R)-(6-acetoxy-3,4-bis-benzyloxy-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]-methyl ester 
• 393803-80-0 3-Methyl-but-2-enoic acid (1aR,3aS,5S,7aS,7bR)-7b-[(R)-acetoxy-(6-acetoxy-3,4-bis-benzyloxy-2-methyl-phenyl)-methyl]-1a,4,4,7a-tetramethyl-decahydro-1-oxa-cyclopropa[a]naphthalen-5-yl ester 
• 393803-78-6 Acetic acid (R)-(6-acetoxy-3,4-bis-benzyloxy-2-methyl-phenyl)-((1aR,3aS,5S,7aS,7bR)-5-acetoxy-1a,4,4,7a-tetramethyl-octahydro-1-oxa-cyclopropa[a]naphthalen-7b-yl)-methyl ester 
• 393803-77-5 Acetic acid (R)-(6-acetoxy-3,4-bis-benzyloxy-2-methyl-phenyl)-((1aR,3aS,5S,7aS,7bR)-5-hydroxy-1a,4,4,7a-tetramethyl-octahydro-1-oxa-cyclopropa[a]naphthalen-7b-yl)-methyl ester 
• 393803-81-1 3-Methyl-but-2-enoic acid (1aR,3aS,5S,7aS,7bR)-7b-[(R)-acetoxy-(6-acetoxy-3,4-dihydroxy-2-methyl-phenyl)-methyl]-1a,4,4,7a-tetramethyl-decahydro-1-oxa-cyclopropa[a]naphthalen-5-yl ester 
• 393803-79-7 Acetic acid (R)-(6-acetoxy-3,4-dihydroxy-2-methyl-phenyl)-((1aR,3aS,5S,7aS,7bR)-5-acetoxy-1a,4,4,7a-tetramethyl-octahydro-1-oxa-cyclopropa[a]naphthalen-7b-yl)-methyl ester 
• 393803-72-0 3-Methyl-but-2-enoic acid (1aR,3aS,5S,7aS,7bS)-7b-[6-acetoxy-3-hydroxy-2-methyl-4-oxo-cyclohexa-2,5-dien-(Z)-ylidenemethyl]-1a,4,4,7a-tetramethyl-decahydro-1-oxa-cyclopropa[a]naphthalen-5-yl ester 
• 393803-69-5 Acetic acid 6-[1-((1aR,3aS,5S,7aS,7bS)-5-acetoxy-1a,4,4,7a-tetramethyl-octahydro-1-oxa-cyclopropa[a]naphthalen-7b-yl)-meth-(Z)-ylidene]-4-hydroxy-5-methyl-3-oxo-cyclohexa-1,4-dienyl ester 
• 393803-82-2 9,10-bis-benzyloxy-3-(tert-butyl-dimethyl-silanyloxy)-4,4,6a,11,12b-pentamethyl-1,3,4,4a,5,6,6a,12b-octahydro-2H,12H-benzo[a]xanthene-12,12a-diol 

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