140161-07-5

Upstream product

• 6346-05-0 3-benzyloxy-4-methoxybenzaldehyde 
• 145438-68-2 E-2-(3-Benzyloxy-4-methoxybenzylidene)butanedioic acid 1-methyl ester 
• 111959-14-9 4-(3-benzoxy-4-methoxybenzylidene)-4,5-dihydro-2(3H)-furanone 

Downstream Products

• 76543-15-2 (3R^*,4R^*)-3-(3-hydroxybenzyl)-4-(3-hydroxybenzyl)-4,5-dihydro-2(3H)-furanone <(+/-)-HPMF> 
• 140161-10-0 (M^*,3aR^*,13aR^*)-3a,4,13,13a-tetrahydro-6,11-dibenzoxy-7,10-dimethoxydibenzo-<4,5:6,7>cycloocta<1,2-c>furan-1(3H)-one 
• 111959-15-0 (3R^*,4R^*)-3-(3-benzoxy-4-methoxybenzyl)-4-(3-benzoxy-4-methoxybenzyl)-4,5-dihydro-2(3H)-furanone 
• 93376-04-6 (+/-)-Prestegane B 
• 103122-82-3 (3R^*,4R^*)-3-(3-hydroxybenzyl)-4-(3-methoxybenzyl)-4,5-dihydro-2(3H)-furanone 
• 111959-12-7 4-(3-benzoxy-4-methoxybenzyl)-4,5-dihydro-2(3H)-furanone 

Relevant academic research and scientific papers

Ruthenium Dioxide in Fluoro Acid Medium: II. Application to the Formation of Steganes Skeleton by Oxidative Phenolic Coupling

Ruthenium (IV) dioxide dihydrate in fluoro acidic medium was found to be a very efficient agent for the oxidative coupling of the phenolic lignans (+/-)-presteganes A and B.Different attempts to oxidise the diphenolic dibenzylbutanolide (+/-)-HMPF were also carried out, but were unsuccessful.Likely explanation for these failures are given.